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: Anatomy
The commonest cause for moality in Iver levis operations - 
Select and explain. 
A. Pulmonary atelectasis, B. Anastomotic leak, C. Thoracic duct fistula, D. Subdiaphragmatic collection
B: Anastomotic leak
Answer: B: Anastomotic leak 
Explanation: Ivor Lewis operation - is subtotal esophagectomy done for Ca esophagus in the lower third of esophagus. Pa of stomach and esophagus are resected and remnants of both anastomosed. Anastomotic leak is the most logical answer. I have also confirmed it from Senior residents of surgery. Ref : Bailey & love, 25/e p1033