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Giant cell tumor of the tendon sheath

Case contributed by Mark Holland
Diagnosis probable

Presentation

Presented to the GP with a painless mass around the flexor aspect of the proximal PIP joint of the right index finger.

Patient Data

Age: 55 years
Gender: Female
ultrasound

Vascular, hyporeflective mass along the superficial surface of the flexor tendon.

Case Discussion

This case demonstrates the ultrasound appearance of a giant cell tumor of tendon sheath.

50% of cases are diagnosed in patients younger than 40 years of age, with a peak incidence between 40 and 50 years of age. There is a slight female predilection.

They are associated with degenerative joint disease, especially in the distal interphalangeal (DIP) joint.

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