On radiographs multiple mainly sclerotic lesions are easily detected. The epiphyseal involvement is frequent in this lesion High-grade osteoblastic osteosarcoma usually extensively sclerotic with low cellularity and diminished cytological anaplasia…
Clinical: Clinically, the tumor has an aggressive course, with an expanding soft tissue mass, soft and tender on palpation, with increased local temperature. Pathologic fracture is not uncommon. Imaging: Imaging…
Location: Trunk and craniofacial bones. Rare in the limbs. Clinical: Pain and swelling. Imaging: On x-ray – osteolytic lesion with permeative destruction of bone, ill-defined margins, breaking the cortex, with…
Localization: The most frequent locations are femur, tibia, humerus, and pelvis. Usually located in the meta-diaphysis, it may invade the epiphysis or be multicentric. Clinical: In low-grade tumors, there is…
Localization: It is most commonly localized in the long bones, femur, tibia, and humerus. It prevails in the metaphyses and metaepiphyses, although a purely diaphyseal location may be seen. There…
Round- to ovoid-shaped cells, similar to Ewing sarcoma cells, organized in sheets and nests, with osteoid matrix Selected Bibliography Bertoni F, Present D, Bacchini P, Pignatti G, Picci P, Campanacci…
Location: Mainly in the limbs: distal femur, proximal tibia, and proximal humerus. Clinical: Swelling with little or no pain. Imaging: On x-ray – globose mass lying on the outer surface…
Location: Epiphysis or apophysis of long bones (proximal femur and humerus), flat, and short bones. Clinical: Modest pain. Imaging: On x-ray, like a chondroblastoma. Osteolytic lesion with small calcifications, sharp…
Radiograph at onset and two months later, bone scintigraphy. Lytic heterogeneous broken lesion involving the epiphysis and metaphysis. The thick lamellar cortex indicates a preexisting Paget disease, confirmed by widespread…
Location: Flat and short bones of the trunk: skull (parietal, frontal site), ribs, pelvis, vertebral body, clavicle, and scapula. Among long bones: proximal half of the femur, humerus, and tibia…
