<prompt> A 25 year old male presents with a history of chronic diarrhea. Pathological examination reveals cryptitis and crypt abscesses. The likely diagnosis is:Crohns diseaseUlcerative colitisGiardiasisMicroscipic colitis  <response>: Though chronic diarrhea may be found in both ulcerative colitis and crohns disease, cryptitis and crypt abscesses are characteristic findings of ulcerative colitis. So ulcerative colitis is the single best answer of choice. Ref: Harrisons Principles of Internal Medicine, 16th Edition, Pages 1176-84; Davidsons Principles and Practice of Medicine, 19th Edition, Pages 808-817 