<prompt> 35-year-old co fever, severe abdominal pain in epigastrium radiating to the back with a ho binge drinking. Pulse is 120 bpm, BP is 9060 mm Hg. CT Abdomen PC was done. Most likely diagnosis isAIIMS 2016Peptic ulcerAcute pancreatitisChronic calcific pancreatitisAcute cholecystitis  <response>: Ans. B Acute pancreatitisObserve a bulky pancreas with fuzzy margins and adjacent fat stranding - so Acute pancreatitis. CE-CT scan is IOC. Balthazar grading systemQ and CT Severity Index CTSIQ are used for prognosis. 