Which statement is true regarding primary lung cancer types according to the material?

Which statement is true regarding primary lung cancer types according to the material?

• A. The majority are Small cell lung cancer
• B. The majority are Non-small cell lung cancer
• C. Carcinoid is the majority
• D. Mesothelioma is the majority

Answer: (B)

Most primary lung cancers are non-small cell lung cancer. This group makes up about 85% of cases, with main subtypes including adenocarcinoma, squamous cell carcinoma, and large cell carcinoma. The remaining ~10–15% are small cell lung cancer, which tends to be more aggressive and spreads early, guiding different treatment strategies. Carcinoid tumors are relatively rare, and mesothelioma arises from the pleura rather than the lung parenchyma itself, so it’s not considered a primary lung cancer type.

Most primary lung cancers are non-small cell lung cancer. This group makes up about 85% of cases, with main subtypes including adenocarcinoma, squamous cell carcinoma, and large cell carcinoma. The remaining ~10–15% are small cell lung cancer, which tends to be more aggressive and spreads early, guiding different treatment strategies. Carcinoid tumors are relatively rare, and mesothelioma arises from the pleura rather than the lung parenchyma itself, so it’s not considered a primary lung cancer type.