system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Most common primary bronchogenic carcinoma is
assistant
The correct answer is  Histological type . Frequency Adenocarcinoma . 32% Squamous cell carcinoma . 29% Small cell carcinoma . 18% Large cell carcinoma. 9% Carcinoid. 1% Ref Harrison 19th edition pg 2584