NSCLC

cdt_thumbnail_cover.jpg

In this issue: 

Hepatocellular Carcinoma
Special care for veterans, changes in staging, and biomarkers for early diagnosis

Lung Cancer
Guideline updates and racial disparities in veterans

Multiple Myeloma
Improving survival in the VA

Colorectal Cancer
Barriers to follow-up colonoscopies after FIT testing 

B-Cell Lymphomas
Findings from the VA's National TeleOncology Program and recent therapy updates

Breast Cancer
A look at the VA's Risk Assessment Pipeline and incidence among veterans vs the general population

Genitourinary Cancers
Molecular testing in prostate cancer, improving survival for metastatic RCC, and links between bladder cancer and Agent Orange exposure

cdt_thumbnail_cover.jpg

In this issue: 

Hepatocellular Carcinoma
Special care for veterans, changes in staging, and biomarkers for early diagnosis

Lung Cancer
Guideline updates and racial disparities in veterans

Multiple Myeloma
Improving survival in the VA

Colorectal Cancer
Barriers to follow-up colonoscopies after FIT testing 

B-Cell Lymphomas
Findings from the VA's National TeleOncology Program and recent therapy updates

Breast Cancer
A look at the VA's Risk Assessment Pipeline and incidence among veterans vs the general population

Genitourinary Cancers
Molecular testing in prostate cancer, improving survival for metastatic RCC, and links between bladder cancer and Agent Orange exposure

cdt_thumbnail_cover.jpg

In this issue: 

Hepatocellular Carcinoma
Special care for veterans, changes in staging, and biomarkers for early diagnosis

Lung Cancer
Guideline updates and racial disparities in veterans

Multiple Myeloma
Improving survival in the VA

Colorectal Cancer
Barriers to follow-up colonoscopies after FIT testing 

B-Cell Lymphomas
Findings from the VA's National TeleOncology Program and recent therapy updates

Breast Cancer
A look at the VA's Risk Assessment Pipeline and incidence among veterans vs the general population

Genitourinary Cancers
Molecular testing in prostate cancer, improving survival for metastatic RCC, and links between bladder cancer and Agent Orange exposure

In a lifelong smoker, a tumor in the periphery of the lung and histology showing glandular cells with some neuroendocrine differentiation is most likely large cell carcinoma, a type of non–small cell lung cancer (NSCLC). Although small cell lung cancer is also associated with smoking, histology typically demonstrates highly cellular aspirates with small blue cells with very scant or null cytoplasm, loosely arranged or in a syncytial pattern. Bronchial adenoma is unlikely, given the patient's unintentional weight loss and fatigue over the past few months. Mesothelioma is most associated with asbestos exposure and is found in the lung pleura, which typically presents with pleural effusion.

Lung cancer is the top cause of cancer deaths in the US, second only to prostate cancer in men and breast cancer in women; approximately 85% of all lung cancers are classified as NSCLC. Histologically, NSCLC is further categorized into adenocarcinoma, squamous cell carcinoma, and large cell carcinoma (LCC). When a patient presents with intrathoracic symptoms (including cough, chest pain, wheezing, or dyspnea) and a pulmonary nodule on chest radiography, NSCLC is typically suspected as a possible diagnosis. Smoking is the most common cause of this lung cancer (78% in men, 90% in women). 

Several methods confirm the diagnosis of NSCLC, including bronchoscopy, sputum cytology, mediastinoscopy, thoracentesis, thoracoscopy, and transthoracic needle biopsy. Which method is chosen depends on the primary lesion location and accessibility. Histologic evaluation helps differentiate between the various subtypes of NSCLC. LCC is a subset of NSCLC that is a diagnosis of exclusion. Histologically, LCC is poorly differentiated, and 90% of cases will show squamous, glandular, or neuroendocrine differentiation.

When first diagnosed with NSCLC, 20% of patients have cancer confined to a specific area, 25% of patients have cancer that has spread to nearby areas, and 55% of patients have cancer that has spread to distant body parts. The specific symptoms experienced by patients will vary depending on the location of the cancer. The prognosis for NSCLC depends on the staging of the tumor, nodes, and metastases, the patient's performance status, and any existing health conditions. In the US, the 5-year relative survival rate is 61.2% for localized disease, 33.5% for regional disease, and 7.0% for disease with distant metastases. 

Treatment of NSCLC also varies according to the patient's functional status, tumor stage, molecular characteristics, and comorbidities. Generally, patients with stage I, II, or III NSCLC are treated with the intent to cure, which can include surgery, chemotherapy, radiation therapy, or a combined approach. Lobectomy or resection is generally accepted as an approach for surgical intervention on early-stage NSCLC; however, for stages higher than IB (including stage II/III), patients are recommended to undergo adjuvant chemotherapy. Patients with stage IV disease (or recurrence after initial management) are typically treated with systemic therapy or should be considered for palliative treatment to improve quality of life and overall survival.
 

Karl J. D'Silva, MD, Clinical Assistant Professor, Department of Medicine, Tufts University School of Medicine, Boston; Medical Director, Department of Oncology and Hematology, Lahey Hospital and Medical Center, Peabody, Massachusetts.

Karl J. D'Silva, MD, has disclosed no relevant financial relationships.

Image Quizzes are fictional or fictionalized clinical scenarios intended to provide evidence-based educational takeaways.

In a lifelong smoker, a tumor in the periphery of the lung and histology showing glandular cells with some neuroendocrine differentiation is most likely large cell carcinoma, a type of non–small cell lung cancer (NSCLC). Although small cell lung cancer is also associated with smoking, histology typically demonstrates highly cellular aspirates with small blue cells with very scant or null cytoplasm, loosely arranged or in a syncytial pattern. Bronchial adenoma is unlikely, given the patient's unintentional weight loss and fatigue over the past few months. Mesothelioma is most associated with asbestos exposure and is found in the lung pleura, which typically presents with pleural effusion.

Lung cancer is the top cause of cancer deaths in the US, second only to prostate cancer in men and breast cancer in women; approximately 85% of all lung cancers are classified as NSCLC. Histologically, NSCLC is further categorized into adenocarcinoma, squamous cell carcinoma, and large cell carcinoma (LCC). When a patient presents with intrathoracic symptoms (including cough, chest pain, wheezing, or dyspnea) and a pulmonary nodule on chest radiography, NSCLC is typically suspected as a possible diagnosis. Smoking is the most common cause of this lung cancer (78% in men, 90% in women). 

Several methods confirm the diagnosis of NSCLC, including bronchoscopy, sputum cytology, mediastinoscopy, thoracentesis, thoracoscopy, and transthoracic needle biopsy. Which method is chosen depends on the primary lesion location and accessibility. Histologic evaluation helps differentiate between the various subtypes of NSCLC. LCC is a subset of NSCLC that is a diagnosis of exclusion. Histologically, LCC is poorly differentiated, and 90% of cases will show squamous, glandular, or neuroendocrine differentiation.

When first diagnosed with NSCLC, 20% of patients have cancer confined to a specific area, 25% of patients have cancer that has spread to nearby areas, and 55% of patients have cancer that has spread to distant body parts. The specific symptoms experienced by patients will vary depending on the location of the cancer. The prognosis for NSCLC depends on the staging of the tumor, nodes, and metastases, the patient's performance status, and any existing health conditions. In the US, the 5-year relative survival rate is 61.2% for localized disease, 33.5% for regional disease, and 7.0% for disease with distant metastases. 

Treatment of NSCLC also varies according to the patient's functional status, tumor stage, molecular characteristics, and comorbidities. Generally, patients with stage I, II, or III NSCLC are treated with the intent to cure, which can include surgery, chemotherapy, radiation therapy, or a combined approach. Lobectomy or resection is generally accepted as an approach for surgical intervention on early-stage NSCLC; however, for stages higher than IB (including stage II/III), patients are recommended to undergo adjuvant chemotherapy. Patients with stage IV disease (or recurrence after initial management) are typically treated with systemic therapy or should be considered for palliative treatment to improve quality of life and overall survival.
 

Karl J. D'Silva, MD, Clinical Assistant Professor, Department of Medicine, Tufts University School of Medicine, Boston; Medical Director, Department of Oncology and Hematology, Lahey Hospital and Medical Center, Peabody, Massachusetts.

Karl J. D'Silva, MD, has disclosed no relevant financial relationships.

Image Quizzes are fictional or fictionalized clinical scenarios intended to provide evidence-based educational takeaways.

In a lifelong smoker, a tumor in the periphery of the lung and histology showing glandular cells with some neuroendocrine differentiation is most likely large cell carcinoma, a type of non–small cell lung cancer (NSCLC). Although small cell lung cancer is also associated with smoking, histology typically demonstrates highly cellular aspirates with small blue cells with very scant or null cytoplasm, loosely arranged or in a syncytial pattern. Bronchial adenoma is unlikely, given the patient's unintentional weight loss and fatigue over the past few months. Mesothelioma is most associated with asbestos exposure and is found in the lung pleura, which typically presents with pleural effusion.

Lung cancer is the top cause of cancer deaths in the US, second only to prostate cancer in men and breast cancer in women; approximately 85% of all lung cancers are classified as NSCLC. Histologically, NSCLC is further categorized into adenocarcinoma, squamous cell carcinoma, and large cell carcinoma (LCC). When a patient presents with intrathoracic symptoms (including cough, chest pain, wheezing, or dyspnea) and a pulmonary nodule on chest radiography, NSCLC is typically suspected as a possible diagnosis. Smoking is the most common cause of this lung cancer (78% in men, 90% in women). 

Several methods confirm the diagnosis of NSCLC, including bronchoscopy, sputum cytology, mediastinoscopy, thoracentesis, thoracoscopy, and transthoracic needle biopsy. Which method is chosen depends on the primary lesion location and accessibility. Histologic evaluation helps differentiate between the various subtypes of NSCLC. LCC is a subset of NSCLC that is a diagnosis of exclusion. Histologically, LCC is poorly differentiated, and 90% of cases will show squamous, glandular, or neuroendocrine differentiation.

When first diagnosed with NSCLC, 20% of patients have cancer confined to a specific area, 25% of patients have cancer that has spread to nearby areas, and 55% of patients have cancer that has spread to distant body parts. The specific symptoms experienced by patients will vary depending on the location of the cancer. The prognosis for NSCLC depends on the staging of the tumor, nodes, and metastases, the patient's performance status, and any existing health conditions. In the US, the 5-year relative survival rate is 61.2% for localized disease, 33.5% for regional disease, and 7.0% for disease with distant metastases. 

Treatment of NSCLC also varies according to the patient's functional status, tumor stage, molecular characteristics, and comorbidities. Generally, patients with stage I, II, or III NSCLC are treated with the intent to cure, which can include surgery, chemotherapy, radiation therapy, or a combined approach. Lobectomy or resection is generally accepted as an approach for surgical intervention on early-stage NSCLC; however, for stages higher than IB (including stage II/III), patients are recommended to undergo adjuvant chemotherapy. Patients with stage IV disease (or recurrence after initial management) are typically treated with systemic therapy or should be considered for palliative treatment to improve quality of life and overall survival.
 

Karl J. D'Silva, MD, Clinical Assistant Professor, Department of Medicine, Tufts University School of Medicine, Boston; Medical Director, Department of Oncology and Hematology, Lahey Hospital and Medical Center, Peabody, Massachusetts.

Karl J. D'Silva, MD, has disclosed no relevant financial relationships.

Image Quizzes are fictional or fictionalized clinical scenarios intended to provide evidence-based educational takeaways.

The history and findings in this case are suggestive of non–small cell lung cancer (NSCLC) large cell carcinoma.

Lung cancer is the most common cancer worldwide and has the highest mortality rate of all cancers. It comprises two major subtypes: NSCLC and small cell lung cancer (SCLC). Histologically, NSCLC is further classified as adenocarcinoma, squamous cell carcinoma, and large cell carcinoma with or without neuroendocrine features. Large cell carcinoma accounts for 9% of all cases and is frequently associated with poor prognosis. Most patients with NSCLC large cell carcinoma are older than 60 years and are diagnosed with stage III or IV disease. NSCLC large cell carcinoma appears to occur more commonly in men than in women and in patients with a history of smoking. It often presents as a large mass with central necrosis. 

NSCLC is often asymptomatic in its early stages. The most frequently reported signs and symptoms of lung cancer include:

•    Cough
•    Chest pain
•    Shortness of breath
•    Coughing up blood
•    Wheezing
•    Hoarseness
•    Recurring infections, such as bronchitis and pneumonia
•    Weight loss and loss of appetite
•    Fatigue

Signs and symptoms of metastatic disease may include bone pain, spinal cord impingement, or neurologic problems, such as headache, weakness or numbness of limbs, dizziness, and seizures.

All patients with NSCLC require a complete staging workup to evaluate the extent of disease because stage plays a central role in treatment selection. After physical examination and a complete blood count, a chest radiograph is often the first test performed. Chest radiographs may show a pulmonary nodule, mass, or infiltrate; mediastinal widening; atelectasis; hilar enlargement; and/or pleural effusion.

Various methods are available to confirm the diagnosis, and the method chosen may be determined at least in part by lesion location. These include: 

•    Bronchoscopy
•    Sputum cytology
•    Mediastinoscopy
•    Thoracentesis
•    Thoracoscopy
•    Transthoracic needle biopsy (CT- or fluoroscopy-guided)

According to 2023 guidelines from the National Comprehensive Cancer Network (NCCN), the diagnosis of NSCLC large cell carcinoma requires a thoroughly sampled resected tumor with immunohistochemical stains that exclude adenocarcinoma (TTF-1, napsin A) and squamous cell (p40, p63) carcinoma. Nonresected specimens or cytology specimens are insufficient for its diagnosis. NSCLC large cell carcinoma lacks the cytologic, architectural, and histochemical features of small cell carcinoma, adenocarcinoma, or squamous cell carcinoma and is undifferentiated. 

When the NSCLC histologic subtype is determined, molecular testing should be performed as part of broad molecular profiling with the goal of identifying rare driver mutations for which effective drugs may already be available or to appropriately counsel patients regarding the availability of clinical trials. NSCLC diagnostic standards include the detection of EGFR, BRAF, and MET mutations, ERBB2 (HER2) expression, and the analysis of ALK, ROS1, RET, and NTRK translocations. In addition, analysis of programmed death-ligand 1 expression is necessary to identify patients who may benefit from the use of immune checkpoint inhibitors. 

Surgery combined with chemotherapy has been shown to improve the prognosis of patients with NSCLC large cell carcinoma. Preferred regimens in various lines of treatment and according to molecular characteristics can be found in the NCCN guidelines. 

Karl J. D'Silva, MD, Clinical Assistant Professor, Department of Medicine, Tufts University School of Medicine, Boston; Medical Director, Department of Oncology and Hematology, Lahey Hospital and Medical Center, Peabody, Massachusetts.

Karl J. D'Silva, MD, has disclosed no relevant financial relationships.

Image Quizzes are fictional or fictionalized clinical scenarios intended to provide evidence-based educational takeaways.

The history and findings in this case are suggestive of non–small cell lung cancer (NSCLC) large cell carcinoma.

Lung cancer is the most common cancer worldwide and has the highest mortality rate of all cancers. It comprises two major subtypes: NSCLC and small cell lung cancer (SCLC). Histologically, NSCLC is further classified as adenocarcinoma, squamous cell carcinoma, and large cell carcinoma with or without neuroendocrine features. Large cell carcinoma accounts for 9% of all cases and is frequently associated with poor prognosis. Most patients with NSCLC large cell carcinoma are older than 60 years and are diagnosed with stage III or IV disease. NSCLC large cell carcinoma appears to occur more commonly in men than in women and in patients with a history of smoking. It often presents as a large mass with central necrosis. 

NSCLC is often asymptomatic in its early stages. The most frequently reported signs and symptoms of lung cancer include:

•    Cough
•    Chest pain
•    Shortness of breath
•    Coughing up blood
•    Wheezing
•    Hoarseness
•    Recurring infections, such as bronchitis and pneumonia
•    Weight loss and loss of appetite
•    Fatigue

Signs and symptoms of metastatic disease may include bone pain, spinal cord impingement, or neurologic problems, such as headache, weakness or numbness of limbs, dizziness, and seizures.

All patients with NSCLC require a complete staging workup to evaluate the extent of disease because stage plays a central role in treatment selection. After physical examination and a complete blood count, a chest radiograph is often the first test performed. Chest radiographs may show a pulmonary nodule, mass, or infiltrate; mediastinal widening; atelectasis; hilar enlargement; and/or pleural effusion.

Various methods are available to confirm the diagnosis, and the method chosen may be determined at least in part by lesion location. These include: 

•    Bronchoscopy
•    Sputum cytology
•    Mediastinoscopy
•    Thoracentesis
•    Thoracoscopy
•    Transthoracic needle biopsy (CT- or fluoroscopy-guided)

According to 2023 guidelines from the National Comprehensive Cancer Network (NCCN), the diagnosis of NSCLC large cell carcinoma requires a thoroughly sampled resected tumor with immunohistochemical stains that exclude adenocarcinoma (TTF-1, napsin A) and squamous cell (p40, p63) carcinoma. Nonresected specimens or cytology specimens are insufficient for its diagnosis. NSCLC large cell carcinoma lacks the cytologic, architectural, and histochemical features of small cell carcinoma, adenocarcinoma, or squamous cell carcinoma and is undifferentiated. 

When the NSCLC histologic subtype is determined, molecular testing should be performed as part of broad molecular profiling with the goal of identifying rare driver mutations for which effective drugs may already be available or to appropriately counsel patients regarding the availability of clinical trials. NSCLC diagnostic standards include the detection of EGFR, BRAF, and MET mutations, ERBB2 (HER2) expression, and the analysis of ALK, ROS1, RET, and NTRK translocations. In addition, analysis of programmed death-ligand 1 expression is necessary to identify patients who may benefit from the use of immune checkpoint inhibitors. 

Surgery combined with chemotherapy has been shown to improve the prognosis of patients with NSCLC large cell carcinoma. Preferred regimens in various lines of treatment and according to molecular characteristics can be found in the NCCN guidelines. 

Karl J. D'Silva, MD, Clinical Assistant Professor, Department of Medicine, Tufts University School of Medicine, Boston; Medical Director, Department of Oncology and Hematology, Lahey Hospital and Medical Center, Peabody, Massachusetts.

Karl J. D'Silva, MD, has disclosed no relevant financial relationships.

Image Quizzes are fictional or fictionalized clinical scenarios intended to provide evidence-based educational takeaways.

The history and findings in this case are suggestive of non–small cell lung cancer (NSCLC) large cell carcinoma.

Lung cancer is the most common cancer worldwide and has the highest mortality rate of all cancers. It comprises two major subtypes: NSCLC and small cell lung cancer (SCLC). Histologically, NSCLC is further classified as adenocarcinoma, squamous cell carcinoma, and large cell carcinoma with or without neuroendocrine features. Large cell carcinoma accounts for 9% of all cases and is frequently associated with poor prognosis. Most patients with NSCLC large cell carcinoma are older than 60 years and are diagnosed with stage III or IV disease. NSCLC large cell carcinoma appears to occur more commonly in men than in women and in patients with a history of smoking. It often presents as a large mass with central necrosis. 

NSCLC is often asymptomatic in its early stages. The most frequently reported signs and symptoms of lung cancer include:

•    Cough
•    Chest pain
•    Shortness of breath
•    Coughing up blood
•    Wheezing
•    Hoarseness
•    Recurring infections, such as bronchitis and pneumonia
•    Weight loss and loss of appetite
•    Fatigue

Signs and symptoms of metastatic disease may include bone pain, spinal cord impingement, or neurologic problems, such as headache, weakness or numbness of limbs, dizziness, and seizures.

All patients with NSCLC require a complete staging workup to evaluate the extent of disease because stage plays a central role in treatment selection. After physical examination and a complete blood count, a chest radiograph is often the first test performed. Chest radiographs may show a pulmonary nodule, mass, or infiltrate; mediastinal widening; atelectasis; hilar enlargement; and/or pleural effusion.

Various methods are available to confirm the diagnosis, and the method chosen may be determined at least in part by lesion location. These include: 

•    Bronchoscopy
•    Sputum cytology
•    Mediastinoscopy
•    Thoracentesis
•    Thoracoscopy
•    Transthoracic needle biopsy (CT- or fluoroscopy-guided)

According to 2023 guidelines from the National Comprehensive Cancer Network (NCCN), the diagnosis of NSCLC large cell carcinoma requires a thoroughly sampled resected tumor with immunohistochemical stains that exclude adenocarcinoma (TTF-1, napsin A) and squamous cell (p40, p63) carcinoma. Nonresected specimens or cytology specimens are insufficient for its diagnosis. NSCLC large cell carcinoma lacks the cytologic, architectural, and histochemical features of small cell carcinoma, adenocarcinoma, or squamous cell carcinoma and is undifferentiated. 

When the NSCLC histologic subtype is determined, molecular testing should be performed as part of broad molecular profiling with the goal of identifying rare driver mutations for which effective drugs may already be available or to appropriately counsel patients regarding the availability of clinical trials. NSCLC diagnostic standards include the detection of EGFR, BRAF, and MET mutations, ERBB2 (HER2) expression, and the analysis of ALK, ROS1, RET, and NTRK translocations. In addition, analysis of programmed death-ligand 1 expression is necessary to identify patients who may benefit from the use of immune checkpoint inhibitors. 

Surgery combined with chemotherapy has been shown to improve the prognosis of patients with NSCLC large cell carcinoma. Preferred regimens in various lines of treatment and according to molecular characteristics can be found in the NCCN guidelines. 

Karl J. D'Silva, MD, Clinical Assistant Professor, Department of Medicine, Tufts University School of Medicine, Boston; Medical Director, Department of Oncology and Hematology, Lahey Hospital and Medical Center, Peabody, Massachusetts.

Karl J. D'Silva, MD, has disclosed no relevant financial relationships.

Image Quizzes are fictional or fictionalized clinical scenarios intended to provide evidence-based educational takeaways.

Bronchioalveolar cell carcinoma (BAC) is a variant of non–small cell lung cancer (NSCLC) that, in recent years, has received a new identity in some of the literature. Adenocarcinoma in situ (AIS) and minimally invasive adenocarcinoma (MIA) are relatively new entities that in some published literature have replaced the term BAC. The National Comprehensive Cancer Network recognizes these terms. AIS is defined as a localized adenocarcinoma of < 3 cm that exhibits a lepidic growth pattern, with neoplastic cells along the alveolar structures but without stromal, vascular, or pleural invasion. MIA refers to small, solitary adenocarcinomas < 3 cm with either pure lepidic growth or predominant lepidic growth with ≤ 5 mm of stromal invasion. BAC has unique epidemiologic, pathologic, and clinical features compared with other NSCLC subtypes. For example, although it is smoking-related, the relationship of BAC to smoking is less strong than with other types of NSCLC. About a third of patients with BAC are never-smokers. 

There are also some unique radiographic features — its presentation may be confused with pneumonia or other inflammatory conditions in the lung, and only after a patient does not improve after a course of antibiotics should a diagnosis of BAC be considered. Unlike other types of lung cancer where chemotherapy may be the first plan of attack, surgery is often the first choice for treating BAC, particularly when there is no mediastinal node involvement (10%-25% of cases) or distal metastases (5% of cases). BAC usually harbors EGFR mutation. It is responsive to new targeted therapies for lung cancer, particularly osimertinib, afatinib, erlotinib, and gefitinib. Thus, people with BAC are good candidates for genetic testing.

Karl J. D'Silva, MD, Clinical Assistant Professor, Department of Medicine, Tufts University School of Medicine, Boston; Medical Director, Department of Oncology and Hematology, Lahey Hospital and Medical Center, Peabody, Massachusetts

Karl J. D'Silva, MD, has disclosed no relevant financial relationships.

Bronchioalveolar cell carcinoma (BAC) is a variant of non–small cell lung cancer (NSCLC) that, in recent years, has received a new identity in some of the literature. Adenocarcinoma in situ (AIS) and minimally invasive adenocarcinoma (MIA) are relatively new entities that in some published literature have replaced the term BAC. The National Comprehensive Cancer Network recognizes these terms. AIS is defined as a localized adenocarcinoma of < 3 cm that exhibits a lepidic growth pattern, with neoplastic cells along the alveolar structures but without stromal, vascular, or pleural invasion. MIA refers to small, solitary adenocarcinomas < 3 cm with either pure lepidic growth or predominant lepidic growth with ≤ 5 mm of stromal invasion. BAC has unique epidemiologic, pathologic, and clinical features compared with other NSCLC subtypes. For example, although it is smoking-related, the relationship of BAC to smoking is less strong than with other types of NSCLC. About a third of patients with BAC are never-smokers. 

There are also some unique radiographic features — its presentation may be confused with pneumonia or other inflammatory conditions in the lung, and only after a patient does not improve after a course of antibiotics should a diagnosis of BAC be considered. Unlike other types of lung cancer where chemotherapy may be the first plan of attack, surgery is often the first choice for treating BAC, particularly when there is no mediastinal node involvement (10%-25% of cases) or distal metastases (5% of cases). BAC usually harbors EGFR mutation. It is responsive to new targeted therapies for lung cancer, particularly osimertinib, afatinib, erlotinib, and gefitinib. Thus, people with BAC are good candidates for genetic testing.

Karl J. D'Silva, MD, Clinical Assistant Professor, Department of Medicine, Tufts University School of Medicine, Boston; Medical Director, Department of Oncology and Hematology, Lahey Hospital and Medical Center, Peabody, Massachusetts

Karl J. D'Silva, MD, has disclosed no relevant financial relationships.

Bronchioalveolar cell carcinoma (BAC) is a variant of non–small cell lung cancer (NSCLC) that, in recent years, has received a new identity in some of the literature. Adenocarcinoma in situ (AIS) and minimally invasive adenocarcinoma (MIA) are relatively new entities that in some published literature have replaced the term BAC. The National Comprehensive Cancer Network recognizes these terms. AIS is defined as a localized adenocarcinoma of < 3 cm that exhibits a lepidic growth pattern, with neoplastic cells along the alveolar structures but without stromal, vascular, or pleural invasion. MIA refers to small, solitary adenocarcinomas < 3 cm with either pure lepidic growth or predominant lepidic growth with ≤ 5 mm of stromal invasion. BAC has unique epidemiologic, pathologic, and clinical features compared with other NSCLC subtypes. For example, although it is smoking-related, the relationship of BAC to smoking is less strong than with other types of NSCLC. About a third of patients with BAC are never-smokers. 

There are also some unique radiographic features — its presentation may be confused with pneumonia or other inflammatory conditions in the lung, and only after a patient does not improve after a course of antibiotics should a diagnosis of BAC be considered. Unlike other types of lung cancer where chemotherapy may be the first plan of attack, surgery is often the first choice for treating BAC, particularly when there is no mediastinal node involvement (10%-25% of cases) or distal metastases (5% of cases). BAC usually harbors EGFR mutation. It is responsive to new targeted therapies for lung cancer, particularly osimertinib, afatinib, erlotinib, and gefitinib. Thus, people with BAC are good candidates for genetic testing.

Karl J. D'Silva, MD, Clinical Assistant Professor, Department of Medicine, Tufts University School of Medicine, Boston; Medical Director, Department of Oncology and Hematology, Lahey Hospital and Medical Center, Peabody, Massachusetts

Karl J. D'Silva, MD, has disclosed no relevant financial relationships.

On the basis of this presentation, and the findings from the chest x-ray (as shown), the likely diagnosis is non–small cell lung cancer (NSCLC), Pancoast tumor, also known as superior sulcus tumor. Pancoast tumors are rare, representing about 3%-5% of all lung cancers, and invade the structures in the apex of the chest, including the first thoracic ribs or periosteum, the lower nerve roots of the bronchial plexus, the sympathetic chain and stellate ganglion, or the subclavian vessels. The majority of Pancoast tumors are non–small cell carcinomas.

Because of their pulmonary location, Pancoast tumors are characterized by several distinct symptoms. As seen in this case, patients often present with shoulder pain that worsens over time, especially with invasion of the chest wall and brachial plexus. The pain may radiate to the neck; axilla; anterior chest wall; and medial aspect of the arm, forearm, and wrist. If Pancoast tumors infiltrate the ulnar nerve, patients may present with weakness and muscle atrophy of the intrinsic muscles of the hand. In addition, invasion of the sympathetic chain and of the inferior cervical ganglion can cause Horner syndrome (ptosis, miosis, enophthalmos, and anhidrosis). Lastly, upper-arm edema may develop, signaling invasion and potentially occlusion of the subclavian vein.

During workup, CT-guided core biopsy is the first-line diagnostic test for Pancoast tumors. CT of the chest can confirm the presence of an apical mass and its position in relation to other structures of the thoracic inlet. MRI can further assess suspected brachial plexus, subclavian vessels, spine, and neural foramina invasion, specifying the extent of the disease and of the amount of nerve-root involvement.

For resectable Pancoast tumors, the National Comprehensive Cancer Network recommends chemoradiation, followed by surgical resection and chemotherapy. Preoperative chemoradiation together with surgical resection has shown a 2-year survival between 50% and 70%. Depending on biomarker status (certain EGFR mutations or programmed death ligand 1 levels ≥ 1%), the addition of either atezolizumab or osimertinib is advised. However, the positioning of Pancoast tumors can pose a surgical challenge, and if the lesion remains unresectable after preoperative concurrent chemoradiation, then consolidation immunotherapy with durvalumab is recommended.

Karl J. D'Silva, MD, Clinical Assistant Professor, Department of Medicine, Tufts University School of Medicine, Boston; Medical Director, Department of Oncology and Hematology, Lahey Hospital and Medical Center, Peabody, Massachusetts.

Karl J. D'Silva, MD, has disclosed no relevant financial relationships.

Image Quizzes are fictional or fictionalized clinical scenarios intended to provide evidence-based educational takeaways.

On the basis of this presentation, and the findings from the chest x-ray (as shown), the likely diagnosis is non–small cell lung cancer (NSCLC), Pancoast tumor, also known as superior sulcus tumor. Pancoast tumors are rare, representing about 3%-5% of all lung cancers, and invade the structures in the apex of the chest, including the first thoracic ribs or periosteum, the lower nerve roots of the bronchial plexus, the sympathetic chain and stellate ganglion, or the subclavian vessels. The majority of Pancoast tumors are non–small cell carcinomas.

Because of their pulmonary location, Pancoast tumors are characterized by several distinct symptoms. As seen in this case, patients often present with shoulder pain that worsens over time, especially with invasion of the chest wall and brachial plexus. The pain may radiate to the neck; axilla; anterior chest wall; and medial aspect of the arm, forearm, and wrist. If Pancoast tumors infiltrate the ulnar nerve, patients may present with weakness and muscle atrophy of the intrinsic muscles of the hand. In addition, invasion of the sympathetic chain and of the inferior cervical ganglion can cause Horner syndrome (ptosis, miosis, enophthalmos, and anhidrosis). Lastly, upper-arm edema may develop, signaling invasion and potentially occlusion of the subclavian vein.

During workup, CT-guided core biopsy is the first-line diagnostic test for Pancoast tumors. CT of the chest can confirm the presence of an apical mass and its position in relation to other structures of the thoracic inlet. MRI can further assess suspected brachial plexus, subclavian vessels, spine, and neural foramina invasion, specifying the extent of the disease and of the amount of nerve-root involvement.

For resectable Pancoast tumors, the National Comprehensive Cancer Network recommends chemoradiation, followed by surgical resection and chemotherapy. Preoperative chemoradiation together with surgical resection has shown a 2-year survival between 50% and 70%. Depending on biomarker status (certain EGFR mutations or programmed death ligand 1 levels ≥ 1%), the addition of either atezolizumab or osimertinib is advised. However, the positioning of Pancoast tumors can pose a surgical challenge, and if the lesion remains unresectable after preoperative concurrent chemoradiation, then consolidation immunotherapy with durvalumab is recommended.

Karl J. D'Silva, MD, Clinical Assistant Professor, Department of Medicine, Tufts University School of Medicine, Boston; Medical Director, Department of Oncology and Hematology, Lahey Hospital and Medical Center, Peabody, Massachusetts.

Karl J. D'Silva, MD, has disclosed no relevant financial relationships.

Image Quizzes are fictional or fictionalized clinical scenarios intended to provide evidence-based educational takeaways.

On the basis of this presentation, and the findings from the chest x-ray (as shown), the likely diagnosis is non–small cell lung cancer (NSCLC), Pancoast tumor, also known as superior sulcus tumor. Pancoast tumors are rare, representing about 3%-5% of all lung cancers, and invade the structures in the apex of the chest, including the first thoracic ribs or periosteum, the lower nerve roots of the bronchial plexus, the sympathetic chain and stellate ganglion, or the subclavian vessels. The majority of Pancoast tumors are non–small cell carcinomas.

Because of their pulmonary location, Pancoast tumors are characterized by several distinct symptoms. As seen in this case, patients often present with shoulder pain that worsens over time, especially with invasion of the chest wall and brachial plexus. The pain may radiate to the neck; axilla; anterior chest wall; and medial aspect of the arm, forearm, and wrist. If Pancoast tumors infiltrate the ulnar nerve, patients may present with weakness and muscle atrophy of the intrinsic muscles of the hand. In addition, invasion of the sympathetic chain and of the inferior cervical ganglion can cause Horner syndrome (ptosis, miosis, enophthalmos, and anhidrosis). Lastly, upper-arm edema may develop, signaling invasion and potentially occlusion of the subclavian vein.

During workup, CT-guided core biopsy is the first-line diagnostic test for Pancoast tumors. CT of the chest can confirm the presence of an apical mass and its position in relation to other structures of the thoracic inlet. MRI can further assess suspected brachial plexus, subclavian vessels, spine, and neural foramina invasion, specifying the extent of the disease and of the amount of nerve-root involvement.

For resectable Pancoast tumors, the National Comprehensive Cancer Network recommends chemoradiation, followed by surgical resection and chemotherapy. Preoperative chemoradiation together with surgical resection has shown a 2-year survival between 50% and 70%. Depending on biomarker status (certain EGFR mutations or programmed death ligand 1 levels ≥ 1%), the addition of either atezolizumab or osimertinib is advised. However, the positioning of Pancoast tumors can pose a surgical challenge, and if the lesion remains unresectable after preoperative concurrent chemoradiation, then consolidation immunotherapy with durvalumab is recommended.

Karl J. D'Silva, MD, Clinical Assistant Professor, Department of Medicine, Tufts University School of Medicine, Boston; Medical Director, Department of Oncology and Hematology, Lahey Hospital and Medical Center, Peabody, Massachusetts.

Karl J. D'Silva, MD, has disclosed no relevant financial relationships.

Image Quizzes are fictional or fictionalized clinical scenarios intended to provide evidence-based educational takeaways.

Based on the patient's presentation and workup, the likely diagnosis is adenosquamous carcinoma of the lung, a relatively rare subtype of non–small cell lung cancer (NSCLC). Adenosquamous carcinoma displays qualities of both squamous cell carcinoma and adenocarcinoma; for definitive diagnosis, the cancer must contain 10% of each of these major NSCLC subtypes. Maeda and colleagues concluded that adenosquamous carcinoma occurs more frequently among men and that the age at the time of diagnosis is higher among such cancers compared with adenocarcinoma. Several studies have confirmed that adenosquamous carcinoma of the lung is also more prevalent among smokers. 

Though a diagnosis of adenosquamous carcinoma may be suspected after small biopsies, cytology, or excisional biopsies, definitive diagnosis necessitates a resection specimen. If any adenocarcinoma component is observed in a biopsy specimen that is otherwise squamous, as in the present case, this finding is an indication for molecular testing. Epidermal growth factor receptor (EGFR) mutations may be present in adenosquamous carcinoma cancers, despite a majority of cancers with EGFR mutations being among nonsmokers or former light smokers with adenocarcinoma histology. In addition, even for patients diagnosed with squamous cell carcinoma, adenosquamous carcinoma should be considered if genetic testing suggests EGFR mutations.

Relative to adenocarcinoma and squamous cell carcinoma, adenosquamous carcinoma has higher grade malignancy, more advanced postoperative stage, and stronger lymph nodal invasiveness. In terms of treatment, surgical resection is the curative option for adenosquamous carcinoma of the lung, with lobectomy with lymphadenectomy considered for first-line treatment. Though the most beneficial chemotherapy regimen for patients with adenosquamous carcinoma of the lung remains the subject of investigation, platinum-based doublet chemotherapy is the current standard treatment option. EGFR tyrosine kinase inhibitors may be an effective option for EGFR-positive patients. 

Karl J. D'Silva, MD, Clinical Assistant Professor, Department of Medicine, Tufts University School of Medicine, Boston; Medical Director, Department of Oncology and Hematology, Lahey Hospital and Medical Center, Peabody, Massachusetts.

Karl J. D'Silva, MD, has disclosed no relevant financial relationships.

Image Quizzes are fictional or fictionalized clinical scenarios intended to provide evidence-based educational takeaways.

Based on the patient's presentation and workup, the likely diagnosis is adenosquamous carcinoma of the lung, a relatively rare subtype of non–small cell lung cancer (NSCLC). Adenosquamous carcinoma displays qualities of both squamous cell carcinoma and adenocarcinoma; for definitive diagnosis, the cancer must contain 10% of each of these major NSCLC subtypes. Maeda and colleagues concluded that adenosquamous carcinoma occurs more frequently among men and that the age at the time of diagnosis is higher among such cancers compared with adenocarcinoma. Several studies have confirmed that adenosquamous carcinoma of the lung is also more prevalent among smokers. 

Though a diagnosis of adenosquamous carcinoma may be suspected after small biopsies, cytology, or excisional biopsies, definitive diagnosis necessitates a resection specimen. If any adenocarcinoma component is observed in a biopsy specimen that is otherwise squamous, as in the present case, this finding is an indication for molecular testing. Epidermal growth factor receptor (EGFR) mutations may be present in adenosquamous carcinoma cancers, despite a majority of cancers with EGFR mutations being among nonsmokers or former light smokers with adenocarcinoma histology. In addition, even for patients diagnosed with squamous cell carcinoma, adenosquamous carcinoma should be considered if genetic testing suggests EGFR mutations.

Relative to adenocarcinoma and squamous cell carcinoma, adenosquamous carcinoma has higher grade malignancy, more advanced postoperative stage, and stronger lymph nodal invasiveness. In terms of treatment, surgical resection is the curative option for adenosquamous carcinoma of the lung, with lobectomy with lymphadenectomy considered for first-line treatment. Though the most beneficial chemotherapy regimen for patients with adenosquamous carcinoma of the lung remains the subject of investigation, platinum-based doublet chemotherapy is the current standard treatment option. EGFR tyrosine kinase inhibitors may be an effective option for EGFR-positive patients. 

Karl J. D'Silva, MD, Clinical Assistant Professor, Department of Medicine, Tufts University School of Medicine, Boston; Medical Director, Department of Oncology and Hematology, Lahey Hospital and Medical Center, Peabody, Massachusetts.

Karl J. D'Silva, MD, has disclosed no relevant financial relationships.

Image Quizzes are fictional or fictionalized clinical scenarios intended to provide evidence-based educational takeaways.

Based on the patient's presentation and workup, the likely diagnosis is adenosquamous carcinoma of the lung, a relatively rare subtype of non–small cell lung cancer (NSCLC). Adenosquamous carcinoma displays qualities of both squamous cell carcinoma and adenocarcinoma; for definitive diagnosis, the cancer must contain 10% of each of these major NSCLC subtypes. Maeda and colleagues concluded that adenosquamous carcinoma occurs more frequently among men and that the age at the time of diagnosis is higher among such cancers compared with adenocarcinoma. Several studies have confirmed that adenosquamous carcinoma of the lung is also more prevalent among smokers. 

Though a diagnosis of adenosquamous carcinoma may be suspected after small biopsies, cytology, or excisional biopsies, definitive diagnosis necessitates a resection specimen. If any adenocarcinoma component is observed in a biopsy specimen that is otherwise squamous, as in the present case, this finding is an indication for molecular testing. Epidermal growth factor receptor (EGFR) mutations may be present in adenosquamous carcinoma cancers, despite a majority of cancers with EGFR mutations being among nonsmokers or former light smokers with adenocarcinoma histology. In addition, even for patients diagnosed with squamous cell carcinoma, adenosquamous carcinoma should be considered if genetic testing suggests EGFR mutations.

Relative to adenocarcinoma and squamous cell carcinoma, adenosquamous carcinoma has higher grade malignancy, more advanced postoperative stage, and stronger lymph nodal invasiveness. In terms of treatment, surgical resection is the curative option for adenosquamous carcinoma of the lung, with lobectomy with lymphadenectomy considered for first-line treatment. Though the most beneficial chemotherapy regimen for patients with adenosquamous carcinoma of the lung remains the subject of investigation, platinum-based doublet chemotherapy is the current standard treatment option. EGFR tyrosine kinase inhibitors may be an effective option for EGFR-positive patients. 

Karl J. D'Silva, MD, Clinical Assistant Professor, Department of Medicine, Tufts University School of Medicine, Boston; Medical Director, Department of Oncology and Hematology, Lahey Hospital and Medical Center, Peabody, Massachusetts.

Karl J. D'Silva, MD, has disclosed no relevant financial relationships.

Image Quizzes are fictional or fictionalized clinical scenarios intended to provide evidence-based educational takeaways.