title: LIPOMA ARBORESCENS: RARE CASE OF ROTATOR CUFF TEAR ASSOCIATED WITH THE PRESENCE OF LIPOMA ARBORESCENS IN THE SUBACROMIAL-SUBDELTOID AND GLENOHUMERAL BURSA.
abstract: Lipoma arborescens is a rare intra-articular disease that is usually monoarticular and is characterized by extensive proliferation of the synovial villi and hyperplasia of the subsynovial fat. The synovial tissue is progressively replaced by mature fat cells in the synovial membrane. The present study reports a case of a rare condition of lipoma arborescens that was simultaneously intra-articular (glenohumeral joint) and in the subacromial-subdeltoid bursa, in association with a torn supraspinatus tendon. The clinical, histological and radiographic presentations and treatment are discussed here. The description of this case includes radiographic and magnetic resonance evaluations and pathological examination. Although lipoma arborescens is a rare condition, it should be taken into consideration in cases presenting synovial hyperproliferation and synovial fat replacement.
authors.affiliation: Attending Physician in the Shoulder and Elbow Group, Institute of Orthopedics, HC/FMUSP, São Paulo, SP, Brazil.
authors.forename: Eduardo
authors.initials: E
authors.lastname: Benegas
authors.affiliation: Collaborating Professor in the School of Medicine, University of São Paulo, and Head of the Shoulder and Elbow Group, Institute of Orthopedics, HC/FMUSP, São Paulo, SP, Brazil.
authors.forename: Arnaldo Amado Ferreiro
authors.initials: AA
authors.lastname: Neto
authors.affiliation: Trainee in the Shoulder and Elbow Group, Institute of Orthopedics, HC/FMUSP, São Paulo, SP, Brazil.
authors.forename: Daniel Sabatini
authors.initials: DS
authors.lastname: Teodoro
authors.affiliation: Trainee in the Shoulder and Elbow Group, Institute of Orthopedics, HC/FMUSP, São Paulo, SP, Brazil.
authors.forename: Marcos Vinícius Muriano
authors.initials: MV
authors.lastname: da Silva
authors.affiliation: Trainee in the Shoulder and Elbow Group, Institute of Orthopedics, HC/FMUSP, São Paulo, SP, Brazil.
authors.forename: Augusto Medaglia
authors.initials: AM
authors.lastname: de Oliveira
authors.affiliation: Pathologist in the Institute of Orthopedics, HC/FMUSP, São Paulo, SP, Brazil.
authors.forename: Renée Zon
authors.initials: RZ
authors.lastname: Filippi
authors.affiliation: Attending Physician in the Shoulder and Elbow Group, Institute of Orthopedics, HC/FMUSP, São Paulo, SP, Brazil.
authors.forename: Flávia
authors.initials: F
authors.lastname: de Santis Prada
keywords: Bursitis; Lipoma/diagnosis; Lipoma/radiography; Shoulder; Synovitis