Background: The coexistence of giant cell tumor (GCT) and metacarpal bone tuberculosis (TB) of the hand has never been described before in the English written literature. We report here a first observation.
Case presentation:We report the case of a 49-year-old male who presented with severe pain in his left hand following a blunt trauma. A plain X-ray of the metacarpal bones showed a pathological fracture of the 4 th metacarpal bone (diaphysis), and computerized tomography and magnetic resonance imaging studies confirmed the diagnosis of destructive (lytic) lesions. biopsy of the metacarpal lesion revealed a GCT, and tissue cultures were positive for mycobacterium tuberculosis (TB). He was treated by a standard 4-drug protocol of isoniazid, rifampicin, pyrazinamide and ethambutol for 2 months and an additional 6 months of isoniazid and rifampicin. He then underwent excision of the metacarpal lesion, and the pathological examination showed a GCT with cultures negative for TB.
Conclusions:The correct diagnosis of this unique combination of pathologies (GCT and metacarpal bone TB) depended on a high index of clinical suspicion, referral to mycobacterial laboratory tests, careful histologic examination of tissue samples and especially radiomorphologic findings.AIDS) [15]. When it spreads to the bones, it is also known as "osseous tuberculosis", a form of osteomyelitis [15,16]. We report here a first observation of the coexistence of GCT and metacarpal bone TB of the hand which has never been reported.
Case PresentationAn Ukraine-born 49-year-old male presented to the emergency room with severe pain in his left hand, deformation and swelling of the 3,4,5 metacarpal area, following a blunt trauma. A plain X-ray for suspected fracture of the metacarpal bones showed a pathological fracture of the 4 th metacarpal bone (diaphysis) (Figures 1,2). Computerized tomography (CT) and magnetic resonance imaging studies confirmed the diagnosis of destructive (lytic) lesions. A bone scan for determining possible spread of the tumor showed a "hot spot" in the metacarpal bone where the tumor was located. An open biopsy of the metacarpal lesion revealed a GCT, and tissue cultures were positive for mycobacterium tuberculosis (TB).Extensive investigation for the port of entry for mycobacterium included purified protein derivative which was 10 mm. Sputum, urine and gastric lavage cultures were negative. A CT of the chest and abdomen and pelvis were negative both for tumor spread and TB lesions.The patient was asymptomatic except for the pain in his left hand . He was treated for TB by a standard 4-drug protocol of isoniazid, rifampicin, pyrazinamide and ethambutol for 2 months and an additional 6 months of isoniazid and rifampicin. After a full course of therapy for TB, the patient underwent excision (curettage) of the metacarpal lesion, and the pathological examination showed a GCT with cultures negative for TB.