title: Large osteoarthritic cyst presenting as soft tissue tumour - a case report.
abstract: Large osteoarthritic cysts can sometimes be difficult to distinguish from primary osseous and soft tissue tumours. We present such a case involving a cyst arising from the hip joint and eroding the acetabulum which presented as a soft tissue malignancy referred to a tertiary bone and soft tissue tumour centre. We discuss the diagnostic problems it may pose, and present a literature review of the subject.
authors.affiliation: The Royal National Orthopaedic Hospital, Stanmore, Middlesex, UK. dennis_kosuge@hotmail.com
authors.forename: D D
authors.initials: DD
authors.lastname: Kosuge
authors.forename: D H
authors.initials: DH
authors.lastname: Park
authors.forename: S R
authors.initials: SR
authors.lastname: Cannon
authors.forename: T W
authors.initials: TW
authors.lastname: Briggs
authors.forename: R C
authors.initials: RC
authors.lastname: Pollock
authors.forename: J A
authors.initials: JA
authors.lastname: Skinner
mesh_terms: D001845:Bone Cysts / Q000150:complications / Q000473:pathology*; D003937:Diagnosis, Differential; D006621:Hip Joint; D006801:Humans; D033162:Incidental Findings; D008297:Male; D008875:Middle Aged; D015207:Osteoarthritis, Hip / Q000150:complications / Q000000981:diagnostic imaging; D012983:Soft Tissue Neoplasms / Q000150:complications / Q000473:pathology*; D014057:Tomography, X-Ray Computed