Abstract   Background: Parosteal osteosarcoma is rare low-grade malignancy which arises   on the surface of the metaphysis of long bones it has a low propensity to metastasize.   Different surgical treatment options including marginal resection, wide resection   and amputation were recommended for the tumor. The purpose of the study was to   assess the results of different surgical treatment ...

We describe a unique case of a low-grade extraskeletal osteosarcoma revealing both histologic and radiologic features reminiscent of parosteal osteosarcoma. The tumor, which had been present for 10 years, occurred in the left axilla of a 74-year-old black woman. To date, all the published cases of extraskeletal osteosarcoma have been high-grade neoplasms; to our knowledge, this is the first rep...

We describe the treatment of an uncommonly late presentation of a recurrent parosteal osteosarcoma of the distal femur. The osteosarcoma had originally been detected 20 years earlier, and had been treated with wide excision and mega-prosthesis to reconstruct the femur. The tumour recurred in close proximity to the femur prosthesis and encased half the femoral stem. Because there was a large pie...

INTRODUCTION Surface osteosarcoma are rare variant of osteosarcoma that include parosteal osteosarcoma, periosteal osteosarcoma and high grade surface osteosarcoma. These lesions have different clinical presentation and biological behavior compared to conventional osteosarcoma, and hence need to be managed differently. GOAL The aim of this study is to analyze the clinico-pathological features...

Radiation-induced tumors subsequent to nasopharyngeal carcinoma are very rare. To date, no post-irradiation parosteal osteosarcoma of the craniofacial bone has been reported in the English literature. In October 2000, a 57-year-old Chinese woman presented 5 years after radiotherapy for nasopharyngeal carcinoma with a 6-month history of a gradually enlarging left postauricular mass. CT scans rev...

The authors report the case of a 50-year-old man who presented with nontraumatic swelling of the left upper arm. The diagnosis of parosteal osteosarcoma of the humerus was made after diagnostic workup. A long diaphyseal segment of the humerus containing the tumor was resected with a healthy margin of soft tissues and was irradiated extracorporeally with a single dose of 30 Gray. The bony segmen...

Radiation-induced sarcomas are a well-recognized late complication of radiation therapy. We present a rare case of a periosteal osteosarcoma of the femur developing 10 years after radiation treatment for a soft tissue sarcoma to highlight the clinical and radiological features of this rare complication of therapy and to describe its management.