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Open Access Open Badges Case report

Mycobacterium haemophilum osteomyelitis: case report and review of the literature

Sameer Elsayed* and Ron Read

Author Affiliations

9-3535 Research Rd NW, Calgary, Alberta, Canada T2L 2K8

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BMC Infectious Diseases 2006, 6:70  doi:10.1186/1471-2334-6-70

Published: 10 April 2006



Mycobacterium haemophilum is a slow-growing, fastidious, iron-requiring microorganism that, relative to other non-tuberculous mycobacterial species, has rarely been documented as a cause of human infection. This microorganism appears to be acquired via environmental exposure although its natural habitat and mode of acquisition are unknown. It has primarily been implicated as a cause of ulcerating cutaneous or subcutaneous nodular skin lesions, particularly in immunocompromised patients, although infections at extracutaneous sites have also been described. Osteomyelitis, while rarely documented, appears to be an important complication of infection with M. haemophilum in these patients.

Case presentation

We describe a unique case of culture-confirmed M. haemophilum osteomyelitis in an adult woman with polycythemia vera and review the world literature on bone infections due to this organism.


Mycobacterium haemophilum is an important but infrequently encountered cause of osteomyelitis in immunocompromised patients, often requiring months to years of medical therapy, with or without surgery, to effect a clinical cure.