A Pediatric Radiology textbook and Pediatric Radiology digital library
Conventional Osteosarcoma
Etiology: malignant bone forming tumor
Imaging: most often near metaphyses of long bones and extends into epiphysis in 80%, aggressive bone lesion with new bone matrix + bone destruction (permeative / moth eaten cortical destruction), extensive extraosseous soft tissue mass
Complications: metastasis to lung
Clinical: most common malignant primary tumor of children + young adults, 80% of osteosarcoma
Cases of Conventional Osteosarcoma
AP and lateral radiographs of the lumbar spine taken during a CT myelogram show loss of height of the L3 vertebral body and sclerosis of its posterior elements. Axial CT myelogram through the L3 vertebral body shows lytic lesions in the vertebral body and an expansile sclerotic appearance of the posterior elements with periosteal reaction.AP and lateral radiographs of the right femur shows permeative cortical destruction throughout the diaphysis of the femur with associated diffuse sunburst periosteal reaction and a Codman’s triangle.