TENOSYNOVIAL GIANT CELL TUMOR CASE REPORT AND REVIEW

Tenosynovial giant cell tumor (TSGCT) is a rare benign tumor arising from joint synovia, bursae and tendon sheaths. Tenosynovial giant cell tumors are a group of generally benign intra-articular and soft tissue tumors with common histologic features. They can be roughly divided into localized and diffuse types. Localized types include giant cell tumors of tendon sheath and localized pigmented villonodular synovitis, whereas diffuse types encompass conventional pigmented villonodular synovitis and diffuse type giant cell tumor. Localized tumors are generally indolent, whereas diffuse tumors are locally aggressive. Localized forms are most frequent in the hands, and diffuse forms in the knee. MRI is necessary and sometimes sufficient for diagnosis. Treatment strategy is guided by progression, symptomatology and location. Optimally complete resection is the principle of first-line treatment Herein, we report a case of localized tenosynovial giant cell tumor (or localized pigmented villonodular synovitis) with circumferential involvement of flexor and extensor tendons of 4th digit of right foot.