J Korean Soc Radiol.  2021 Mar;82(2):462-468. 10.3348/jksr.2020.0062.

Parosteal Lipoma Associated with a Growing Osteochondroma of the Right Ilium

Affiliations
  • 1Departments of Radiology, Kyung Hee University Hospital, College of Medicine, Kyung Hee University, Seoul, Korea
  • 2Departments of Pathology, Kyung Hee University Hospital, College of Medicine, Kyung Hee University, Seoul, Korea
  • 3Departments of Orthopaedic Surgery, Kyung Hee University Hospital, College of Medicine, Kyung Hee University, Seoul, Korea

Abstract

Parosteal lipoma is a rare type of lipoma, the incidence being approximately 0.3% of all lipomas. Moreover, parosteal lipoma coexisting with osteochondroma is extremely rare. A few cases with coexistence of osteochondroma and parosteal lipoma have been reported and they were thought to be reactive changes of adjacent bone by parosteal lipoma. However, temporal relationship of these tumors could not be explained. Here, we report a case of parosteal lipoma associated with osteochondroma of the right ilium developed over 6 years, with follow-up radiographs.

Keyword

Lipoma; Osteochondroma; Radiography; Multidetector Computed Tomography; Magnetic Resonance Imaging
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