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September 5, 2025

Giant Cell Tumor of the Flexor Sheath of the Index Finger

YHYoussef El HassnaouiAbdelmalek Essaâdi University TMTarik Mekdad AAA Ansari

Key Points

Ultrasound confirmed a giant cell tumor in the index finger of a 41-year-old man with a painless mass.
The patient successfully underwent surgical excision, and follow-up revealed no tumor recurrence after six months.
Early diagnosis and meticulous surgical management are critical when dealing with giant cell tumors.
The case emphasizes the benign nature yet potential for local progression of giant cell tumors in the hand.

Abstract

Giant cell tumors (GCTs) of the tendon sheath are common benign neoplasms of the hand, arising from the synovial lining of tendon sheaths. We report the case of a 41-year-old man who presented with a painless mass on the right index finger, progressively enlarging over four years. Ultrasound examination revealed a well-circumscribed lesion consistent with a GCT. The patient underwent complete surgical excision without complications. At six-month follow-up, there was no evidence of recurrence. This case highlights the importance of early diagnosis and meticulous surgical management of this pathology.

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