[Digestive actinomycosis: three cases and review].

Actinomycosis is a chronic suppurative disease. It is caused by an anaerobic bacterium, generally Actinomyces israelii. Cervical and thoracic localizations are most frequent. Digestive actinomycosis is rare and can simulate cancer leading to resection. We report 3 cases of surgical abdominal actinomycosis. Localization was colic in 2 cases and hepatic in 1 case. The diagnosis of actinomycosis was made after resection in the 3 cases. The evolution was favourable under medical treatment. These observations illustrate the difficulty of diagnosing this rare and unrecognised disease which can be cured by long term penicillin therapy.