<prompt> 65 year old Ramdeen presents with Abdominal pain and distension of abdomen. His stools were maroon coloured and he gives a past history of cerebrovascular accident and myocardial infarction. What will be the probable diagnosis ?Ulcerative colitisAcute mesentric ischemiaIrritable bowel syndromeChrons disease  <response>: Ans. is b ie. Acute Mesenteric ischemia 