Lipoma Arborescens of The Knee: A Case Report

      Lipoma Arborescens is a rare intra-articular tumor. Knee is the most commonly affected joint, whereas ankle, hip, shoulder and elbow may be involved. There are few case reports published in the literature. We report a case with lipoma arborescens in the knee joint to improve the medical knowledge about the pathology and management of this rare entitiy. 20-year-old Caucasian female patient admitted to outpatient clinic with complaints of swelling and pain in her right knee. There was swelling and local tenderness in the suprapatellar region. Magnetic resonance imaging (MRI) findings include significant effusion in knee joint and suprapatellar compartment, remarkable suprapatellar mass was drawing attention at all sequences which have an isointense view with fat tissue. Tumor was resected totally, and the preoperative diagnosis of lipoma arborescens is confirmed after histopathological examination. This report notes the significance of both physical and histopathologic examination for the confirmation of such a rare intra-articular entity. When such lesions are suspected, MRI of the joint is necessary and total excision of the mass yields excellent outcome