title: Subcutaneous extraskeletal osteosarcoma of the forearm: a case report and review of the literature.
abstract: Extraskeletal osteosarcoma (ESOS) originating in the subcutaneous tissue is a rare occurrence, accounting for less than 10 % of ESOS cases. Osteosarcoma of extraskeletal origin accounts for approximately 2-4 % of all osteosarcomas, and 1 % of soft tissue sarcomas. We report a case of an 80-year-old female with an isolated primary subcutaneous tumor of the forearm. After imaging, surgical excision, and pathological analysis, the diagnosis of a subcutaneous osteosarcoma was made. This report documents the clinical and pathological findings of subcutaneous ESOS in this case, along with a review of previous cases of subcutaneous ESOS.
authors.affiliation: Department of Orthopaedic Surgery, Hofstra Northwell School of Medicine, Manhasset, NY, USA. chris.w.healy@gmail.com.
authors.forename: Christopher
authors.initials: C
authors.lastname: Healy
authors.affiliation: Department of Pathology, Hofstra Northwell School of Medicine, Manhasset, NY, USA.
authors.forename: Leonard B
authors.initials: LB
authors.lastname: Kahn
authors.affiliation: Department of Orthopaedic Surgery, Hofstra Northwell School of Medicine, Manhasset, NY, USA.
authors.forename: Samuel
authors.initials: S
authors.lastname: Kenan
mesh_terms: D000369:Aged, 80 and over; D001859:Bone Neoplasms / Q000000981:diagnostic imaging*; D005260:Female; D005542:Forearm / Q000473:pathology*; D006801:Humans; D012516:Osteosarcoma / Q000000981:diagnostic imaging*; D012983:Soft Tissue Neoplasms / Q000000981:diagnostic imaging*
keywords: Extraskeletal; Forearm; Osteosarcoma; Subcutaneous; Surgery