title: Local recurrence of a parosteal osteosarcoma 21 years after incomplete resection.
abstract: Parosteal osteosarcoma (POS) is the most common form of surface osteosarcoma. Its symptoms are insidious and its duration prior to diagnosis is considerably longer than that of other types of osteosarcoma. We report a case of POS with a growing mass but no evidence of metastasis. This tumor, which was diagnosed as calcified hematoma with benign characteristics, was incompletely resected in our hospital 21 years before the diagnosis of recurrence. The patient underwent a wide en bloc resection in our hospital and was free of symptoms, with no signs of tumor recurrence or metastasis during a 53-month follow-up.
authors: Department of Orthopaedic Surgery and Traumatology, University of Barcelona, Barcelona, Spain.
authors: Andrés
authors: A
authors: Combalia
authors: Ernesto
authors: E
authors: Muñoz-Mahamud
authors: Antonio
authors: A
authors: Palacín
authors: Jaume
authors: J
authors: Pomés
authors: Vicente
authors: V
authors: López
mesh_terms: D000328:Adult; D001859:Bone Neoplasms / Q000175:diagnosis / Q000473:pathology* / Q000601:surgery; D003951:Diagnostic Errors; D005500:Follow-Up Studies; D006801:Humans; D006811:Humerus; D008279:Magnetic Resonance Imaging; D008297:Male; D009364:Neoplasm Recurrence, Local; D018217:Osteosarcoma, Juxtacortical / Q000175:diagnosis / Q000473:pathology* / Q000601:surgery; D019275:Radiopharmaceuticals; D013669:Technetium Tc 99m Medronate; D014055:Tomography, Emission-Computed; D014057:Tomography, X-Ray Computed
chemical_list: D019275:Radiopharmaceuticals; D013669:Technetium Tc 99m Medronate