Gülümser AYDIN, 1 Işık KELEŞ, 1 Özgür TOSUN, 2 Aliye TOSUN, 3 Latife Özlem YILMAZ, 4 Tuba Kendi KARAGÜLLE, 5 Sevim ORKUN1

1Department of Physical Medicine and Rehabilitation, Medical Faculty of Kırıkkale University, Kırıkkale, Turkey
2Department of Radiodiagnosis, Ankara Atatürk Training and Research Hospital, Ankara, Turkey
3Department of Physical Medicine and Rehabilitation, Ankara Atatürk Training and Research Hospital, Ankara, Turkey
4Department of Physical Medicine and Rehabilitation, Kırıkkale Yüksek İhtisas Hospital, Kırıkkale, Turkey
5Center for MR Research, University of Minnesota, Minneapolis, ABD

Keywords: Familial tendency; juvenile oligoarthritis; knee; lipoma arborescens; magnetic resonance imaging

Abstract

Lipoma arborescens (LA) is a rare benign lesion of synovial joints and bursae. The knee is the most common site of the involvement. Magnetic resonance imaging findings are typical in the diagnosis. The number of case reports of LA in children is significantly lower compared to the adults. In this article, two nine-year-old and 15-year-old sisters who were examined for the complaints of bilateral pain and swelling in knees were presented. Magnetic resonance imaging demonstrated typical features of LA in the right knees of both children. Pediatric patients with mono/oligoarticular effusion and synovial hypertrophy without systemic involvement, LA should be considered in differential diagnosis. Magnetic resonance imaging is a sensitive modality in the diagnosis of LA.