Microscopic colitis (MC) is a chronic inflammatory disease of the colon that presents with chronic, nonbloody watery diarrhea and only few or no endoscopic abnormalities. Histologic examination discriminates lymphocytic (LyC; presence ?20 intraepithelial lymphocytes per 100 surface epithelial cells) collagenous (CC; colonic subepithelial collagen band >10 ?m in diameter).1,2 MC not otherwise sp...