Primary actinomycosis of the abdominal wall.

Primary actinomycosis of the abdominal wall is a rare clinical entity. Only 7 adequately described cases have been reported in the English literature. We report a case of isolated abdominal wall actinomycosis involving the left lower quadrant of the abdominal wall in a 32-year-old diabetic male. The diagnosis was confirmed by histopathological examination. Surgical drainage of the abscess followed by long-term administration of penicillin resulted in cure. The clinicopathological spectrum of actinomycosis is reviewed and isolated involvement of the abdominal wall is characterized in light of the knowledge acquired from the available literature on this rare clinical presentation. The significance of obtaining tissues for culture and histopathology in all inflammatory lesions is emphasized.