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17 March 2008 (online)
Collagenous colitis is a rarely recognized disease characterized clinically by watery diarrhoea, and morphologically by a broad bandlike deposition of increased amounts of collagen under the basement membrane of the surface epithelium. Pathogenetically, a disturbance of the colonic pericryptal fibroblastic sheath is most probably involved.
Collagenous colitis - Diarrhoea - Pericryptal fibroblast sheath