Hemopigmented Villonodular Synovitis of Hand

The location of giant cells tumor in synovial sheaths of fingers tendons is often frequent. We bring a case. An 18-years-old patient without particular medical history, since two years, had a bilobate tumefaction of right index’s proximal interphalangeal, painless, firm, movably under the skin, without inflammatory sign. Standard radiography showed cortical thickening. A complete excision is performed. Pathological results revealed tenosynovial giant cells tumor without malignancy. Giant cells tumor of tendon sheaths represent the second soft parts of the hand after arthro-synovial cyst. The prognosis depends on invasion of digital noble structures.