Which statement best describes bronchogenic carcinoma statistics?

• A. Small cell accounts for 50% of primary lung cancers
• B. Adenocarcinoma is the rarest NSCLC subtype
• C. Carcinoid tumors represent the majority of cases
• D. Non-small cell lung cancer accounts for about 85% of primary lung cancers

Answer: (C)

Understanding bronchogenic carcinoma statistics helps you pick the most accurate description of how these cancers are distributed. The vast majority of primary lung cancers are non-small cell lung cancer, making up about 85% of cases. Within non-small cell, adenocarcinoma is the most common subtype, followed by squamous cell. Small cell lung cancer accounts for roughly 15%. Carcinoid tumors, which are a neuroendocrine type, are relatively rare, representing only a small fraction of lung cancers. So, the statement that carcinoid tumors represent the majority is not accurate; the main reality is that non-small cell lung cancer constitutes the majority, around 85% of cases.