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.
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