Radiology Key

Localization: Any osseous segment may be affected, but the most common sites are the metadiaphyses of the long bones and the spine. Clinical: Pain and swelling generally of less than…

Location: Usually at the end of long bones (femur, tibia, humerus), involving the epiphysis, both the epiphysis and the metaphysis, or, less frequently, an apophysis. Exceptionally, it can be purely…

Location: Typically located in the long bone metaphysis, it can invade the epiphysis, especially in adults. Preferred sites proximal tibia (30 % of cases), small bones of the foot, and…

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…

Chondrosarcomas varieties % Central 55–60 Peripheral 15–20 Dedifferentiated central Related posts: General Principles of Imaging Biology of Giant Cell Tumor Biology of Osteosarcoma Telangiectatic Osteosarcoma Undifferentiated Pleomorphic Sarcoma (UPS) Alveolar…

Location: Long bones, metaepiphyseal, and eccentrical: distal femur, proximal tibia, and distal radius (65 % of the cases). Rare in the sacrum and pelvis. When occurring in long bones before…

In Maffucci’s syndrome (very rare), multiple, diffuse chondromas are associated with multiple hemangiomas, cutaneous, subcutaneous, or in the deep soft tissues (not in the bone). Basic imaging is the same…

Localization: It usually arises in the metaphyses of the long bones, beneath the growth plate, but along with patient growth, the cyst migrates to the diaphysis. The most common location…

Localization: The lesion is almost exclusively localized in the shaft of the tibia, occasionally involving the ipsilateral fibula, too. Exceptionally it is bilateral in tibias and fibulas. Clinical: The symptoms…