title: Lipoma arborescens of the knee.
abstract: Lipoma arborescens is a rare intra-articular lesion, characterised by diffuse replacement of the subsynovial tissue by mature fat cells, producing prominent villous transformation of the synovium. The aetiology of this benign condition is unknown. We describe six cases involving the knee, discussing the symptoms, diagnosis and treatment.
authors.affiliation: Department of Orthopaedic Surgery, Massachusetts General Hospital, Boston 02114, USA.
authors.forename: P
authors.initials: P
authors.lastname: Kloen
authors.forename: S B
authors.initials: SB
authors.lastname: Keel
authors.forename: H P
authors.initials: HP
authors.lastname: Chandler
authors.forename: R H
authors.initials: RH
authors.lastname: Geiger
authors.forename: B
authors.initials: B
authors.lastname: Zarins
authors.forename: A E
authors.initials: AE
authors.lastname: Rosenberg
mesh_terms: D017667:Adipocytes / Q000473:pathology; D000273:Adipose Tissue / Q000473:pathology; D000328:Adult; D000368:Aged; D002471:Cell Transformation, Neoplastic / Q000473:pathology; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007592:Joint Diseases / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D007719:Knee Joint / Q000473:pathology* / Q000601:surgery; D008067:Lipoma / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D008214:Lymphocytes / Q000473:pathology; D008297:Male; D008875:Middle Aged; D010950:Plasma Cells / Q000473:pathology; D011151:Popliteal Cyst / Q000175:diagnosis / Q000473:pathology; D013582:Synovial Fluid / Q000166:cytology; D013583:Synovial Membrane / Q000473:pathology