title: A case of juxta-articular myxoma of the knee.
abstract: This 9-year-old girl presented with a painful mass in the posterolateral aspect of her right knee. Excisional biopsy of the mass revealed a juxta-articular myxoma. The differential diagnosis for such an intra- or periarticular mass should include meniscal cyst, parameniscal cyst, ganglion cyst, juxta-articular myxoma, focal nodular PVNS, and desmoid tumor. Current imaging techniques do not allow differentiation between these benign lesions and low grade myxoid-containing sarcoma.
authors.affiliation: Department of Orthopaedic Surgery, UCLA School of Medicine 90024-6952, USA.
authors.forename: A
authors.initials: A
authors.lastname: Daluiski
authors.forename: L L
authors.initials: LL
authors.lastname: Seeger
authors.forename: S A
authors.initials: SA
authors.lastname: Doberneck
authors.forename: G A
authors.initials: GA
authors.lastname: Finerman
authors.forename: J J
authors.initials: JJ
authors.lastname: Eckardt
mesh_terms: D002648:Child; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D007717:Knee / Q000473:pathology*; D007719:Knee Joint / Q000473:pathology; D008279:Magnetic Resonance Imaging; D009232:Myxoma / Q000175:diagnosis*; D012983:Soft Tissue Neoplasms / Q000175:diagnosis*