Localized-type tenosynovial giant cell tumors are common in the fingers and have a high recurrence rate even though they are benign. Among 38 cases of tenosynovial giant cell tumor, neurovascular bundles were involved in 16. There were 5 cases of circumferential lesions, 2 in the peripheral two-thirds, 6 in the peripheral one-half, and 3 in the peripheral one-third. Although adhesion and involvement were observed around the neurovascular bundle, the tumor was removed without damaging it using a microscope. The extent of the tumor was confirmed via the I-shaped incision on the dorsal side and the W-shaped incision on the volar side, and the neurovascular bundle and vein were preserved.
