[Role of vascular erosion in massive colonic hemorrhage of diverticular origin. Apropos of a case].

A case of massive hemorrhage from colon of diverticular origin is reported. A complete study of operative specimen allowed precise localization of diverticulum responsible and guidance of histopathologists in their search for the arterial erosion. Histology showed loss of arterial substance with total communication with diverticular lumen. A literature review emphasized vascular relations of diverticuli and the role of stercoliths in the mechanical agression responsible for the massive hemorrhage. It also illustrated the predominance of arteriography in the modern diagnostic and therapeutic approach to these lesions.