[Actinomycosis in surgery as a cause of non-healing abscesses]

The author describes the case-history of three subcutaneous abscesses resistant to healing with a very difficult microbiological diagnosis of the specific process. The actinomycotic origin was revealed only after repeated cultivation. Only after detection of the agent and aimed therapy with high PNC doses it proved possible to improve the patients' condition relatively quickly and substantially. Treatment is, however, of a prolonged character.