title: Non-monomelic synchronous primary multicentric chondrosarcoma: a case report.
abstract: We report a patient with simultaneous presentation of two histologically grade 2 conventional chondrosarcomas non-derived from pre-existing cartilaginous lesions, in the absence of pulmonary or visceral involvement. One tumour was located at the right proximal femur and the other one at the right scapula. There was no evidence of local recurrence or pulmonary or visceral involvement three years and a half after total scapulectomy and resection of the proximal third of the femur. To the best of our knowledge, this is the first report of a patient with two non-monomelic synchronous chondrosarcomas arising in two previously normal bones of the skeleton. Such cases are often difficult to differentiate from metastatic disease.
authors.affiliation: Department of Orthopaedic Surgery, 12 de Octubre University Hospital, 2 Rafael Salazar Alonso Street, 28007 Madrid, Spain. yolandahernanz@auna.com
authors.forename: Yolanda
authors.initials: Y
authors.lastname: Hernanz González
authors.forename: Javier
authors.initials: J
authors.lastname: Salamanca
authors.forename: Carlos
authors.initials: C
authors.lastname: Resines Erasun
authors.forename: Francisco José
authors.initials: FJ
authors.lastname: Martínez-Tello
mesh_terms: D001859:Bone Neoplasms / Q000000981:diagnostic imaging; D002813:Chondrosarcoma / Q000000981:diagnostic imaging; D005266:Femoral Neoplasms / Q000000981:diagnostic imaging; D006801:Humans; D008297:Male; D008875:Middle Aged; D009378:Neoplasms, Multiple Primary / Q000000981:diagnostic imaging; D011859:Radiography; D012540:Scapula