Fig. 8From: Bizarre parosteal osteochondromatous proliferation: an educational reviewSubungual exostosis. On X-rays (a), a mineralized mass is noted in contiguity with the dorsal aspect of the distal phalanx of the big toe. On sagittal CT (b) and T1-weighted MRI (c) images, no cortical or marrow continuity with the underlying bone is seen. Subungual exostosis was pathologically proven. Arrow points at the lesion in all imagesBack to article page