Abdominal actinomycosis is a chronic suppurating granulomatosis caused
by a Gram positive germ, Actinomyces. Manifestations of this rare dis
ease are usually pseudotumoral syndroms leading to surgical exeresis.
The diagnosis is obtained from the pathology report. We report a pseud
otumor of the transverse colon which invaded the greater omentum and t
he anterior abdominal wall. From a review of the recent literature, we
observed that most papers deal essentially with a relatively new enti
ty, pelvic actinomycosis related to prolonged use of an intra-uterin d
evice without medical surveillance.