[Peritoneal actinomycosis. A rare disease. 2 cases].

We report two cases of peritoneal actinomycosis, a rare localization of an uncommon disease (27% of the 212 cases previously published). The disease presents with tumoral symptoms. It is exceptionally diagnosed before surgery which usually consists of a safety excision. The true nature of the tumour is revealed by pathological examination, and its consequence is an antibiotic treatment. In the 2 cases reported here the patients had an old, uncontrolled intra-uterine device which might have been the portal of entry of the infection.