Mycobacterium marinum with associated bursitis.

BACKGROUND: Mycobacterium marinum infections have been reported for over 50 years, mostly in association with trauma in the setting of water exposure.

OBJECTIVE: The differential diagnosis for nodules in a sporotrichoid distribution with simultaneous bursitis is discussed. Mycobacterium marinum treatment regimens for skin and joint involvement are reviewed.

METHODS: Mycobacterium marinum was identified by skin tissue culture with Lowenstein-Jensen medium at 32 degrees C. Histopathologic findings support mycobacterial infection.

RESULTS: Bursitis and nodules resolved in the first 2 months of a 6-month course of minocycline treatment.

CONCLUSION: Bursitis is an extremely rare but significant complication of M. marinum.