Location: Spinal roots, nerves of the mediastinum or of the retroperitoneum, peroneal, and ulnar nerve. Single nodule. Clinical: Slow and progressive pain and neurological symptoms. Liquoral block, compression of the…
Location: (a): Superficial lesion in subcutis or dermis. (b): All sites and all organs. Clinical: (a) Painless nodule, few symptoms. (b) Café au lait spots, typically in the axilla. More…
Localization: Preferred sites are long bones, particularly the distal femur and proximal tibia. Rare in flat bones, exceptional in the hands and feet. It is usually centered in the metaphysis…
Location: Most are deep tumors. Anywhere where fibrous tissue is found. Thigh, knee, trunk, arm, forearm. Rare in the head and neck. Hand and foot are most frequent sites of…
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…
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…
T2 MR images, coronal of the thigh and sagittal of the foot. The thigh lesion has a low signal and infiltrates the muscles, whereas one in the foot is nodular…
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…
Localization: Proximal femur, pelvis, proximal humerus, scapula, and proximal tibia. In long bones, it starts metaphyseal extending as far as half or more of the entire bone. Clinical: Deep, discontinuous,…
