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Secondary unilateral monoarticular lipoma arborescens of the knee - a case report with review of literature.

Authors:Sumathi. S , Dost Mohamed Khan , Vamseedhar Annam , V R.Mrinalini
Int J Biol Med Res. 2012; 3(1): 1456-1458  |  PDF File


Secondary intra-articular lipoma arborescens is a rare entity that can present with monoarticular or polyarticular involvement of joints such as knees, ankles, hips, shoulders, and elbows. Lipoma arborescens is characterized by a diffuse increase in the quantity of subsynovial fat in supra-patellar region which bulges the overlying synovial lining and produces a villous architecture. We here report a 60-year-old woman who presented with unilateral monoarticular lipoma arborescens associated with Baker’s cyst, chondromalacia and subchondral cysts of the left knee. Diagnostic arthroscopic synovectomy was performed. Histopathological examination revealed characteristic features of Lipoma arborescens. The etiopathogenesis and histopathological findings are discussed alongside with review of literature.