Intraosseous chondroid syringoma of the hallux.

A 25-year-old black woman had a deformed right great toe. X-ray examination revealed extensive lytic change in the distal phalanx, to which technetium uptake was limited. The amputation specimen revealed a benign chondroid syringoma in the subungual tissue that penetrated and permeated the bone. Chondroid syringoma is rare in the foot, and we present what we believe is the first such immunohistochemically confirmed case involving bone.