This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Surgery
[{'content': 'Commonest cause of moality in Ivor Lewis operation \nSelect and explain. \nA. Pulmonary atelectasis, B. Anastmotic leak, C. Thorasic duct fistula, D. Sub diphragmatic collection', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ivor Lewis operation is done for esophageal carcinoma. It is a 2 stage operation, in which abdomen is opened first, closed and then thoracotomy is performed. As it involves esophago- gastric anastomosis, Major complication causing moality is anastomotic leak. Aggressive investigation for leak is mandatory in case of unexplained fever or clinical event. Reference: Bailey and love, 27th edition, page 1092,1093', 'role': 'assistant'}]