Fig. 18
From: Pseudotumoural soft tissue lesions of the hand and wrist: a pictorial review
Bizarre parosteal osteochondromatous proliferation (Nora’s lesion). a Plain radiograph of the finger showing a turret exostosis at the dorsal aspect of the proximal phalanx of the second finger (arrowhead). b Longitudinal ultrasound shows the exostosis causing focal contour deformity of the cortical bone (arrowheads) with adjacent hypoechoic cartilage cap (callipers)