Severe pancreatitis may be observed in 15% to 20% of all cases. Overall mortality is now about 5% and for severe cases 10% to 20%. 40% of the patients go on to develop infection of the necrosis. The reported mortality rate associated with infected pancreatic necrosis is as high as 10%-20%, compared with less than 5% for sterile collections. USG Abdomen was done routinely to confirm the diagnosis, exclude other conditions, for evaluation of the biliary tract and for detecting any complications. Contrast enhanced CT Abdomen was undertaken when the diagnosis was doubtful, when USG was not confirmative and when patient failed to improve beyond 72 hours. In our study out of 13(25.49%) patients Of biliary Pancreatitis 12(23.52%) underwent cholecystectomy. 10 (19.61%) open cholecystectomy,2(3.92%) laparoscopic cholecystectomy, 2(3.92%) in the same admissionand others on follow up. post-op recovery was uneventful and one patient was lost to follow-up. 2(3.92%) patients with Pseudocyst underwent cystogastrostomyas both of them were symptomatic.