<prompt> Most common type of lung cancer:Small cell lung cancerLarge cell lung cancerSquamous cell cancerAdenocarcinoma  <response>: Ans. d Adenocarcinoma Ref: Robbins 9th ed. 714 - 15 According to Robbins 9thed, the frequency of major lung cancer and their proportion are: Adenocarcinoma 38 Squamous cell carcinoma 20 Small cell carcinoma 14 Large cell carcinoma 3 Other 25 Must Know MC CA overall: LUNG CA MC CA causing death: LUNG CA MC risk factor for lung CA: Smoking Peak age for development for lung CA: 50 - 60s MC lung cancer in females: Adenocarcinoma Most aggressive type of lung C A: Small cell lung CA Lung CA MC associated with paraeoplastic syndrome: Small cell lung CA Smoking is mc aw SQ. CELL CA . Smoking is strongly aw small cell ca Centrally located lung CA: Squamous cell CA and Small cell lung CA Peripherally located lung CA: Adenocarcinoma and Large cell CA 