Activation of cutaneous sarcoidosis following Mycobacterium marinum infection of skin

Sarcoidosis has long been associated with mycobacterial infection, especial ly with Mycobacterium tuberculosis, although a causal association has not b een proven. Atypical mycobacteria have also been implicated in causing sarc oidosis, but there is as yet no conclusive evidence. We report the activati on of cutaneous sarcoidosis following infection with M. marinum, raising fu rther questions about the role of these bacteria in causing this chronic gr anulomatous disorder.