Seven cases with giant cell tumor of tendon sheath arising from the finger were reported. The age of patients was ranged from 4 to 60 gears and 3 cases were below 20 years, of which 2 were below 10 years. The sites of the tumor were the thumb in one, the index finger in 3 and the ring finger in 3 cases. In 5 cases, the tumor was found at dorsal site of the finger. Radiograph showed a soft tissue shadow in all cases and the pressure atrophy of the cortex of the phalanx was found in 6 cases. The tumor was treated with surgical excision and was not related with the joint or flexor tendon sheath.
Histological findings revealed the proliferation of giant cells and histiocyte-like cells in the collagen fiber band (alveolar structure) in the typical cases.
