Card 2 / 30: A 21 year old man has weight loss and episodic bloody diarrhea. The bloody diarrhea has become more frequent recently. A colonoscopy shows erythema and diffuse small ulcers from the rectum to the mid-transverse colon. Biopsies show architectural distortion and cryptitis. The most likely diagnosis is which of the following?
A) Ischemic colitis
B) AIDS-associated gastroenteritis
C) Clostridium difficile colitis
D) Crohn’s disease
E) Collagenous colitis (lymphocytic colitis)
F) Amebiasis
G.) Ulcerative colitis
H.) Cytomegalovirus colitis
I.) Ulcerative jejunoileitis

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