<prompt> Yellowish exudates at multiple sites seen in colonoscopy indicates:2003Crohns diseaseHirshprung diseaseTuberculosisLymphoma  <response>: Ans: a CrohnsRef: Harrison, 16thed, p. 1779 15thed, p. 1682 In Crohns disease focal inflammation and ulceration are frequently seen. In ulcerative colitis usually hyperemia is seen. Note that crypt abcesses are microscopic features. 