Commonest cause for moality in Iver levis operations -
Ans is 'b' ie Anastamotic leak Ivor lewis operation - is subtotal esophagectomy done for Ca esophagus in 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.
Pulmonary atelectasis
Anastomotic leak
Thoracic duct fistula
Subdiaphragmatic collection