Giant cell tumour of the tendon sheath - hand
Swelling over proximal interphalangeal joint dorsal aspect for 5 - 6 months. No trauma. No significant pain.
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Welll-defined heterogeneously hypoechoic lesion encircling radial lateral extensor tendon slip.
Lesion extends to radial side of digit.
No extension of lesion in proximal interphalangeal joint.
No cystic spaces / calcification in lesion.
Lesion shows vascularity.
Approximate Size - 15 x 12 x 11 mm
Extensor tendon including latearal slip is intact.
Flexure tendon are intact.
No joint effusion.
Soft tissue lesion around radial extensor tendon slip was reported ( based on ultrasound study ) as possible giant cell tumor of tendon sheath.
Surgical excision of lesion was done. Histopathology study reveals giant cell tumor of tendon sheath
(Histopathology report was provided by verbal communication with operating surgeon.)