Mycobacterium fortuitum infection
Less frequently, infection with this pathogen may cause chronic nodular lung disease or lymphadenitis, especially in the subset of patients with GERD and chronic vomiting.
Infection with the human immunodeficiency virus (HIV) is a risk factor for M. fortuitum infection, although Mycobacterium avium complex and Mycobacterium kansasii are more frequent pathogens in that patient population.
Immunocompetent patients may present with skin infection due to M. fortuitum. Most patients will report antecedent trauma. The clinical appearance of the wound is nonspecific, and diagnosis depends on isolating the organism in culture (of draining material or of a tissue biopsy).
Treatment may involve a combination of surgical debridement and antibiotic therapy. Macrolides are usually avoided in this infection due to the presence of a gene that imparts inducible resistance to this class of antibiotic.
A31.8 – Other mycobacterial infections
6040009 – Infection due to Mycobacterium fortuitum