Korean J Dermatol.  2011 Sep;49(9):830-832.

A Case of Subungual Bizarre Parosteal Osteochondromatous Proliferation of the Toe

Affiliations
  • 1Department of Dermatology, College of Medicine, The Catholic University of Korea, Seoul, Korea. beauty4u@catholic.ac.kr
  • 2Department of Orthopedic Surgery, College of Medicine, The Catholic University of Korea, Seoul, Korea.

Abstract

Bizarre parosteal osteochondromatous proliferation (Nora's lesion) is a rare lesion with a tendency to recur. It is usually a solitary lesion that most often develops on the hands and feet. We now present a case of bizarre parosteal osteochondromatous proliferation initially misdiagnosed as subungual exostosis on the left great toe of a 13-year-old boy. The diagnosis was confirmed by radiologic and histopathologic features, followed by complete excision of the lesion. He had a relapse after two months and was treated with re-excision. We suggest that bizarre parosteal osteochondromatous proliferation should be considered in the differential diagnosis of any digital mass.

Keyword

Bizarre parosteal osteochondromatous proliferation; Nora's lesion; Subungual; Toe
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