Brain abscess induced by Propionibacterium acnes in a patient with severe chronic sinusitis.

Propionibacterium acnes has long been considered a contaminant organism. However, recently the isolation of this emerging pathogen has become a more difficult clinical challenge. Infections of the central nervous system caused by P. acnes have been strongly associated with neurosurgical procedures. We describe a patient with Propionibacterium acnes cerebral abscess developed as consequence of a severe chronic sinus disease.