title: An unusual cause of popliteal cyst.
abstract: We describe a surgical treatment for popliteal cyst in a 41-year-old woman affected by diffuse pigmented villonodular synovitis (PVNS) of the knee with extra-articular spreading. The treatment consists of an arthroscopic synoviectomy followed immediately by an open removal of the cyst. At 28-month follow-up, the patient is asymptomatic and no evidence of recurrence of PVNS has been seen. We believe that this double surgical approach may reduce the probability of recurrence of PVNS.
authors.affiliation: Orthopaedic Department of the University of Milano, Istituto Ortopedico Galeazzi, Milano, Italy. valerio.sansone@unimi.it
authors.forename: Valerio
authors.initials: V
authors.lastname: Sansone
authors.forename: Corrado
authors.initials: C
authors.lastname: Sosio
authors.forename: Marco
authors.initials: M
authors.lastname: da Gama Malchér
authors.forename: Alessandro
authors.initials: A
authors.lastname: De Ponti
mesh_terms: D000328:Adult; D001182:Arthroscopy; D005260:Female; D006395:Hemarthrosis / Q000209:etiology; D006801:Humans; D011151:Popliteal Cyst / Q000209:etiology*; D012008:Recurrence; D012086:Reoperation; D013586:Synovitis, Pigmented Villonodular / Q000150:complications* / Q000601:surgery