[Actinomycoses. Anatomopathological study. Apropos of 10 cases].

From 1975 to 1983, ten cases of actinomycosis have been reported. The anatomical localizations were cervicofacial (3 cases), thoracic (2 cases), abdominal (4 cases) and aneurysmal (1 case). The interest and limits of sampling and histological staining methods are discussed. In 8 cases out of 10, the surgical biopsy established the diagnosis of actinomycosis. The "actinomycosis granule" is revealed by the standard staining and characterized with the Gram stain. This latter allowed us to confirm the diagnosis of actinomycosis in 6 cases and to rectify it in 3 other cases that were botryomycosis. Culture of tissue gave the diagnosis in one case of actinomycosis non identified by histology.