LOW Soo Fin, LAU Chee Kong, Suraya AZIZ, Radhika SRIDHARAN. Para-articular osteochondroma: Role of diagnostic imaging. Brunei Int Med J. 2015; 11 (3): 162-166

Para-articular osteochondroma: Role of diagnostic imaging

LOW Soo Fin, LAU Chee Kong, Suraya AZIZ, Radhika SRIDHARAN

Department of Radiology, Universiti Kebangsaan Malaysia Medical Centre, Kuala Lumpur, Malaysia

ABSTRACT

Para-articular osteochondroma (PAOC) is a subtype of extra-skeletal chondroma. This is a rare slow growing benign soft tissue tumour which arises from the adjacent joint and without continuity with the bone. The knee joint is the most frequent site of involvement, particularly at the infra-patellar fossa. We report two cases of para-articular osteochondroma of the knee joint. Based on the imaging features, the diagnosis of para-articular osteochondroma was made and confirmed by histopathological examination. Meticulous clinical-pathologic and imaging evaluation allows recognition of this entity. The imaging findings and the differential diagnoses are highlighted.

Keywords: Para-articular osteochondroma, extra-skeletal chondroma, magnetic resonance imaging

Correspondence author: LOW Soo Fin Department of Radiology, Universiti Kebangsaan Malaysia Medical Centre, Jalan Yaacob Latif, Bandar Tun Razak, 56000 Cheras, Kuala Lumpur, Malaysia. Tel: +603-9145 6439, Fax: +603-9145 6682 E mail: soofinlow@gmail.com

Brunei Int Med J. 2015; 11 (3): 162-166