title: Synovial lipomatosis: A rare cause of knee pain in an adolescent female.
abstract: Synovial lipomatosis is a benign proliferative disease of the subsynovial adipose which can lead to a variety of presentations. Cases of synovial lipomatosis in children or adolescents are rare. This case report describes an adolescent patient with a rare bilateral presentation of synovial lipomatosis. She had been treated for years prior to her presentation for juvenile idiopathic arthritis. She presented with chronic bilateral knee pain, swelling, and mechanical symptoms. Bilateral MR imaging demonstrated effusions, hypertrophy of the synovium, and polyp-like projections of tissue with the same signal intensity as fat which is pathognomonic for synovial lipomatosis. Arthroscopic synovectomy and extensive debridement of polyp like fat projections of the right knee was performed. Histopathology was consistent with the synovial lipomatosis diagnosis. Postoperatively, the patient was satisfied with her outcome with improved pain relief and function in her right knee.
authors.affiliation: Nicholas Miladore, Mary A Childs, Vani J Sabesan, Department of Orthopaedic Surgery, Western Michigan University Homer Stryker M.D. School of Medicine, Kalamazoo, MI 49008, United States.
authors.forename: Nicholas
authors.initials: N
authors.lastname: Miladore
authors.affiliation: Nicholas Miladore, Mary A Childs, Vani J Sabesan, Department of Orthopaedic Surgery, Western Michigan University Homer Stryker M.D. School of Medicine, Kalamazoo, MI 49008, United States.
authors.forename: Mary A
authors.initials: MA
authors.lastname: Childs
authors.affiliation: Nicholas Miladore, Mary A Childs, Vani J Sabesan, Department of Orthopaedic Surgery, Western Michigan University Homer Stryker M.D. School of Medicine, Kalamazoo, MI 49008, United States.
authors.forename: Vani J
authors.initials: VJ
authors.lastname: Sabesan
keywords: Arthroscopy; Knee arthroscopy; Knee pain; Lipoma arborescens; Lipomatosis; Synovial lipomatosis; Villous lipomatous proliferation of the synovial membrane