[Abdominal actinomycosis. Apropos of a case].

Abdominal actinomycosis is a chronic suppurating granulomatosis caused by a Gram positive germ, Actinomyces. Manifestations of this rare disease are usually pseudotumoral syndrome leading to surgical exeresis. The diagnosis is obtained from the pathology report. We report a pseudotumor of the transverse colon which invaded the greater omentum and the anterior abdominal wall. From a review of the recent literature, we observed that most papers deal essentially with a relatively new entity, pelvic actinomycosis related to prolonged use of an intra-uterine device without medical surveillance.