Cutaneous mycobacterial infection can occur with Mycobacterium tuberculosis or other mycobacterial agents. The commonest of the group IB rapidly growing mycobacteria, Mycobacteerium fortuitum, has widespread distribution in nature, and is an
uncommon
causative agent of human mycobacteial infection.
We report herein a case of Mycobacterium fortuitum infection following an antibiotics susceptibility test. This 24-year-old man suffered from ulcerative itchy nodules on the left forearm where the antibiotics susceptibility test was done. The
skin
biopsy specimen revealed lymphohistiocytic granulomatous infiltration in the dermis. Culture of the tissue specimen revealed rapidly growing yellowish colonies, which was isolated to Mycobacterium fortuitum. Among 3 biovariants of fortuitum, our
case
was revealed to be biovariant fortuitum' Surgical excision was performed followed by the administration of antibiotics, and no sign of relapse was noted until now, 1 year since
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