Localized primary cutaneous Mycobacterium kansasii infection in an immunocompromised patient

Mycobacterium kansasii is a rare primary cutaneous pathogen, most commonly affecting persons exposed to contaminated water, particularly after local trauma. Most patients who present with localized primary cutaneous M kansasii infection are immunocompetent, whereas the majority of patients with disseminated or pulmonary infection are immunocompromised. We describe a primary cutaneous M kansasii infection in an iatrogenically immunosuppressed patient.