Well-defined heterogeneously hypoechoic lesion encircling radial lateral extensor tendon slip.
Lesion extends to the radial side of the digit. No extension of the lesion into the proximal interphalangeal joint.
No cystic spaces/calcification in the lesion. Lesion shows vascularity. Approximate Size - 15 x 12 x 11 mm.
Extensor tendon including lateral slip is intact. Flexure tendon is intact. No joint effusion.