Fig. 1
From: Fibroma of tendon sheath of the hand in a 3-year-old boy: a case report
a, b The mass (yellow arrowheads) is located on the volar aspect of the left little finger from the distal palmer crease to the proximal interphalangeal crease. c, d Anteroposterior and lateral radiographs show a circumferential soft tissue shadow on the proximal phalange of the left little finger. Bony abnormalities are not observed. e Ultrasonography demonstrates a well-circumscribed heterogeneous low echoic lesion. The lesion is located on the flexor tendon (white asterisks) and the boundary is clearly maintained. f Color Doppler ultrasonography shows blood flow into the lesion