Mycobacterium fortuitum presenting as an asymptomatic enlarging pulmonary nodule.

A case of Mycobacterium fortuitum presenting as an asymptomatic enlarging pulmonary nodule is described. This case is unusual because the patient was female, did not have underlying pulmonary disease, was not immunocompromised, had no evidence of dissemination, and had no history of aspiration or diabetes mellitus. The patient underwent thoractomy for resection of the pulmonary nodule, which led to the diagnosis.