Isolated Mycobacterium Tuberculosis Tenosynovitis and Osteomyelitis of the Foot in an Immunocompetent Patient
Tubercular osteomyelitis must be considered in the differential diagnosis of immunocompetent patients who present with non-healing wounds with underlying osteomyelitis. Clinical and radiological findings may be indistinguishable from typical bacteria osteomyelitis. A high index of suspicion may prevent delayed diagnosis, and early treatment may prevent subsequent complications. This is a case report of an immunocompetent patient who presented with a chronic non-healing foot wound complicated by abscess and osteomyelitis that did not improve with an appropriate course of intravenous antibiotics. Wound cultures subsequently grew Mycobacterium tuberculosis without evidence of pulmonary involvement. The patient was treated with an initial two-month regimen of rifampin, isoniazid, pyridoxine, pyrazinamide and ethambutol, followed by a tenmonth regimen of rifampin, isoniazid and pyridoxine. The patient experienced significant improvement and complete healing of the foot wound after approximately the first two months of therapy.