Nakamura Tomoki, Matsumine Akihiko, Nishimura Keisuke, Yokoyama Hirokazu, Murata Tetsuya, Uchida Atsumasa, Sudo Akihiro
Department of Orthopaedic Surgery, Mie University Postgraduate School of Medicine, Mie.
Oncol Lett. 2011 Jan;2(1):75-77. doi: 10.3892/ol.2010.204. Epub 2010 Nov 10.
Extraskeletal osteosarcoma (ESOS) occurs in approximately 1% of soft tissue sarcomas and 2-4% of all osteosarcomas. In particular, subcutaneous osteosarcoma is extremely rare, occurring in less than 10% of ESOS cases. This report presents a case of a subcutaneous tumor in the upper arm of a 79-year-old male. Imaging and pathological findings led to the conclusion that the soft tissue tumor should be diagnosed as subcutaneous osteosarcoma. Additionally, this case report documented the clinicopathological findings of the extraskeletal subcutaneous osteosarcoma in this case and discussed its clinical features by reviewing cases previously described in the literature.
骨外骨肉瘤（ESOS）约占软组织肉瘤的1%，占所有骨肉瘤的2 - 4%。特别是皮下骨肉瘤极为罕见，在骨外骨肉瘤病例中不到10%。本报告介绍了一例79岁男性上臂皮下肿瘤的病例。影像学和病理结果得出结论，该软组织肿瘤应诊断为皮下骨肉瘤。此外，本病例报告记录了该病例骨外皮下骨肉瘤的临床病理结果，并通过回顾文献中先前描述的病例讨论了其临床特征。
