Radiation of pain to back and pay in previous night (ie. h/o alcohol) Other imp. diagnostic clue (not given in question) is --> Relief from pain on sitting in upright posture.* Some imp. points about Acute Pancreatitis Etiology Gall stones (50 - 70% ie MC cause)* Alcohol (25%) Grey Turner sign or Cullens sign* : Bleeding into the fascial planes in acute pancreatitis can cause bluish discolouration of ? Umbilicus" v:shapes="_x0000_s1026">flanks* in Grey Turner sign* umblicus* in Cullens sign* Plain abdominal x-ray findings - include a - sentinel loop * - a colon cut off sign* - a renal 'halo' sign*">