Abstract
This article focuses on major clinical and imaging features that are of practical interest in the diagnosis and management of osteosarcoma, a malignant tumor arising from the osteogenic matrix. The current histologic classification of this tumor is also reported. Different types of osteosarcoma are described, each of them with a definite clinical and radiographic pattern. Conventional radiography is the keystone to diagnosis because it allows analysis of the patterns relevant to the different lesions (location, site, bone destruction, periostal reaction, soft tissue masses). The most common type of osteosarcoma is defined classic or conventional high grade (75%) and it typically involves the medullary cavity. Radiographically, it may be predominantly osteosclerotic or osteolytic, but more frequently it has a mixed (osteoslerotic/osteolytic) pattern. The teleangiectatic osteosarcoma is an aggressive form (5%) characterized by marked vascularization with large blood-filled cystic cavities; its typical radiographic pattern is purely osteolytic. Juxtacortical osteosarcoma (8-10%) indicates a group of osteosarcomas apparently arising on bone surface. The most common type is parosteal osteosarcoma which affects older subjects and has...Continue Reading
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