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 ...

Introduction: Osteosarcoma is the most common primary nonhematologic bone malignancy and is the most common primary bone malignancy in children. There are various subtypes of osteosarcoma, each with distinct clinical and imaging characteristics and variable survival and an incidence of 0.2 to 0.3 per 100,000/year. Osteosarcomas can be classified as intramedullary (high grade, telangiectatic, lo...

Osteosarcoma is the most common primary malignant tumor of bone but only 5% of these tumours occur in the jaws. Of all the varieties of osteosarcoma, the juxtacortical type is rare and comprises only less than 4% of all osteosarcomas. Juxtacortical osteosarcoma is further subdivided into parosteal (low grade) and periosteal (high grade). Osteosarcomas can be categorized histologically mainly in...

This paper illustrates an algorithm for osteosarcoma segmentation, using vectorial fuzzy-connectedness segmentation, and coming up with a methodology which can be used to segment some distinct tissues of osteosarcoma such as tumor, necrosis and parosteal sarcoma from 3D vectorial images. However, fuzzy-connectedness segmentation can be successfully used only in connected regions. In this paper,...

PURPOSE Periosteal osteosarcomas are rare cartilage-rich bone tumours characterized by a juxtacortical eccentric position and are normally regarded oncologically as of intermediate to high grade.Their low incidence is mirrored by a small number of reported cases in the world literature. While there is general agreement that wide surgical excision is required, there is a paucity of evidence rega...