A Pediatric Radiology textbook and Pediatric Radiology digital library
Surface Osteosarcoma
Etiology: malignant bone forming tumor
Parosteal osteosarcoma — Imaging: attached to underlying cortex, most common in posterior distal femur — Clinical: older 20-50 years old, low grade
Periosteal osteosarcoma — Imaging: cortical thickening, no medullary involvement, most common location diaphyseal — Clinical: 15-25 year old, intermediate grade, 5% of osteosarcoma
Cases of Surface Osteosarcoma
AP and lateral radiographs of the left hip shows a poorly circumscribed, sclerotic, expansile lesion that appears to be attached to the cortex.