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A benign lesion that affects the distal phalanx, most often the great toe. Grossly it consists of a cartilage cap and a bony stalk. Microscopically it is characterized by an osteochondromatous proliferation with a gradual transition of a peripheral spindle-cell proliferation to hyaline cartilage to trabecular bone. Pain and swelling are present. Simple resection is usually curative.
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