Cutaneous nodules of Mycobacterium chelonae in an immunosuppressed patient with preexisting pulmonary colonization.

A 30-year-old immunocompromised man with known pulmonary Mycobacterium chelonae colonization developed a systemic infection with cutaneous manifestations. The eruption consisted of multiple, nontender, subcutaneous nodules on the extremities. A diagnosis of disseminated M. chelonae was made on the basis of recovery of M. chelonae subspecies abscessus from blood and bronchoalveolar lavage fluid and histologic evidence of acid-fast bacilli in a skin biopsy specimen. We believe this is the first reported case of disseminated M. chelonae infection in an immunocompromised host in whom a primary source of the infection was identified.