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Synovial Lipomatosis (Lipoma arborescens) of the knees - case report

SUMMARY

Synovial Lipomatosis is a rare benign that can present with monoarticular or polyarticular involvement of joints such as knees, ankles, hips, shoulders, and elbows [5]. We describe a case in a 29-year-old man who presented with prolonged pain and swelling of the bilateral knee joints for the previous 20 years. Plain radiograph usually shows joint fullness and osteoarthritic changes. MRI show a thickening of the synovium that has the characteristic features of fat and joint effusion of the bilateral knee joints. Therefore, the patient was underwent synovectomy, which revealed a diffuse yellow soft tissue synovial papillary growth from synovial pouch. The pathology was synovial lipomatosis. This is the first case of Viet Duc Hospital.

It is also termed as villous lipomatous proliferation of the synovium or lipoma arborescens, diffuse lipoma of the joint, diffuse synovial lipoma, diffuse articular lipomatosis, fatty infiltration of the synovial membrane, villous lipomatous proliferation of the synovial membrane [8].

Key words: Synovial Lipomatosis, knees.