Molecular analysis of 2 cases of methicillin-resistant Staphylococcus aureus cholecystitis and a review of the literature.

We present 2 cases of methicillin-resistant Staphylococcus aureus (MRSA) acalculous cholecystitis and review the literature. We performed pulsed field gel electrophoresis, typing of the staphylococcal cassette chromosome mec element, and Panton-Valentine leukocidin testing on the isolates. One each was closely related to USA100 and USA300, indicating that both healthcare- and community-associated strains may cause MRSA cholecystitis.