Osteochondrolipoma Presenting as a Popliteal Cyst.
10.4055/cios.2015.7.2.264
- Author:
Young Joon CHOI
1
;
Jeong Ho KANG
;
Gil Hyun KANG
;
Soo Jung CHOI
Author Information
1. Department of Orthopaedic Surgery, Gangneung Asan Hospital, University of Ulsan College of Medicine, Gangneung, Korea. theknee@naver.com
- Publication Type:Case Reports
- Keywords:
Popliteal cyst;
Neoplasm;
Biopsy
- MeSH:
Female;
Humans;
Lipoma/complications/*diagnosis;
Middle Aged;
Osteochondroma/complications/*diagnosis;
Popliteal Cyst/etiology;
Soft Tissue Neoplasms/complications/*diagnosis
- From:Clinics in Orthopedic Surgery
2015;7(2):264-268
- CountryRepublic of Korea
- Language:English
-
Abstract:
Here, we describe a popliteal mass that was initially misdiagnosed as a simple popliteal cyst, which finally turned out to be osteochondrolipoma. A 63-year-old housewife presented with sustained knee pain in association with a palpable mass on the popliteal fossa. The mass was in the posteromedial area and soft, non-tender, non-movable in the posteromedial area. Using plain radiography, the mass appeared as a round, soft tissue density lesion containing bony fragments. We performed an ultrasound-guided needle biopsy in conjunction with magnetic resonance imaging, followed by an open excisional biopsy. Microscopically, histological sections showed a lipoma with cartilaginous and osseous differentiation, finally diagnosed as osteochondrolipoma. In conclusion, popliteal masses are not always simple cysts, and the evaluation of masses in the popliteal fossa is always necessary.
