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…

Localization: It prevalently occurs in the appendicular skeleton, while it is rare in the trunk, with the exception of the spine (mostly localized in the posterior arch). In the limbs,…

Localization: The most frequent localization is in the long bones: distal femur, proximal humerus, and proximal tibia. It originates from the metaphysis, but, with skeletal growth, it tends to move…

Localization: Chondroma occurs only in bones that are preformed in cartilage. Most cases are observed in tubular bones of the hand. Enchondroma is the most common bone tumor of the…

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…

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…

Localization: Osteoblastoma shows evident predilection for the vertebral column (posterior arch) and the sacrum, but it may occur in any skeletal site. Clinical: In the spine, it presents symptoms similar…