Location: In association with major nerve trunks: sciatic nerve, brachial plexus, sacral plexus. Gluteal region and pelvis, thigh region, shoulder region, and axilla are the most frequent sites. Clinical: Rapidly…
Location: R. of the limbs constitutes 15 % of all tumors. Type (a): Head, neck, genitourinary tract (botryoid variety), retroperitoneum. Type (b): Limbs (forearm, hand, foot). Type (c): Limbs (prevails…
Location: Type (a): retroperitoneum. Commonly involves kidney, pancreas, and vertebral body for direct extension. Type (b): in the limbs, from piliferous areas. Quite small, less than 2 cm. subcutaneous tumors…
Imaging: The plain x-ray is usually diagnostic. Typically, OS starts intramedullary but breaches the cortex and expands in the soft tissues. It is usually a combination of radiolucency and radiodensity,…
Location: >50 % knee, then elbow, shoulder, wrist, hip, and ankle. Extra-articular form in the fingers. Clinical: Pain, limited joint motion, and sensation of joint crackling. Rare blocking and joint…
Localization: The most common locations of metastatic carcinoma are the spine, pelvis, femur, ribs, and skull. Metastases may affect any bone but are rare distal to elbow and knee. Clinical:…
Localization: About half of the cases are localized in the skeleton of the trunk and skull (particularly jaws). The other half occurs in the long bones (metaphysis or diaphysis). Not…
Location: (a) Paratendinous (frequent): in the sheath of a flexor tendon of the fingers, in the palm of the hand close to a metacarpophalangeal joint, in the wrist, on the…
Localization: The axial skeleton is the preferred site. In the appendicular skeleton, the metaepiphyses are preferred. Very rare in bones of the hand and foot. Clinical: Pain (usually relieved by…
Imaging: On x-ray – typical aspect of an osteochondroma with more abundant calcifications or ossifications, intense, and diffused radiopacities, with thicker superficial uncalcified layer and with fuzzy margins towards the…
