[Perforation of a jejunal diverticulum]

An observation of jejunal diverticulum is reported by the authors. It concerned a woman 82 years old whose disease appeared as an acute white spread peritonitis complication. The delay brought to perform the operation made it impossible to save diseased. About that case is evoked the pathogeny of the diverticulum: congenital or acquired. In the case reported it was acquired, the proof resulting from the anatomy-pathology. The disease can appear under a chronicle form with a difficult diagnosis or under a single relevant form whose surgical treatment must be done without delay.