J Korean Orthop Assoc.  2018 Jun;53(3):271-276. 10.4055/jkoa.2018.53.3.271.

Parosteal Lipoma Associated with Underlying Recurrent Bizarre Parosteal Osteochondromatous Proliferation (Nora's Lesion) of the Hand

Affiliations
  • 1Department of Orthopaedic Surgery, Dongguk University College of Medicine, Gyeongju, Korea. kjpil@dongguk.ac.kr

Abstract

Parosteal lipoma is a benign tumor of the mature adipose tissue that contacts the periosteum of the underlying bone directly. The tumor commonly arises in the long bones, such as the femur, radius or tibia, and often exhibits underlying osseous changes, such as a cortical hyperostosis or erosion. Parosteal lipoma arising in a finger is rare. Furthermore, there are no reports of parosteal lipoma associated with underlying bizarre parosteal osteochondromatous proliferation. The authors present a rare case of parosteal lipoma of the proximal phalanx of the little finger accompanied by recurrent bizarre paroteal osteochondromatous proliferation in a 64-year-old male patient who had previously undergone an excisional biopsy at the same location 8 years earlier.

Keyword

hand; phalanx; parosteal lipoma; bizarre parosteal osteochondromatous proliferation
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