Musculoskeletal Key

More than 70 % in long tubular bones. Most frequent sites: upper end of femur neck and trochanter and lower end of femur, tibia, and humerus. Metacarpal, metatarsal, and phalanges…

Fig. 49.1 JBC in the femoral neck. X-ray shows a well-delimited oval osteolytic radiolucent small lesion outlined by a sclerotic rim Fig. 49.2 (a, b) JBC arising in the femoral…

Red marrow of the long bones and axial skeleton is most frequently involved. Less common locations include the skull and craniofacial bones. Involvement of the small bones in hands and…

Fig. 66.1 Paget’s disease of the skull. Radiographic features presenting large ill-defined lytic area with cotton-wool-like opacities Fig. 66.2 Paget’s disease of the mandible with typical periapical dentinal hyperplasia Fig….

Approximately 50 % of the cases in sacrococcygeal bones; nearly 20–40 % in skull base, most commonly in the clivus; and nearly 10–30 % in mobile spine, mainly in the…

Fig. 32.1 Vertebral hemangioma. Roentgenogram (a), axial (b) and sagittal (c) CT, and MRI (d) show a lesion occupying the body of T2 vertebra, with intensification of vertical trabeculae in…

Fig. 45.1 Benign PMT. MRI showing a high signal intensity juxtacortical heterogeneous mass in the left femur in a coronal view Fig. 45.2 MRI axial view of same case in…

Fig. 65.1 (a, b) Anteroposterior and lateral x-ray of distal femur showing an area of lucency with patchy mixed lytic and sclerotic lesion in the medullary canal. (c, d) MRI…

Fig. 35.1 EHE. Radiograph showing a lytic lesion involving phalanges of the hallux, with cortical permeation and no reactive sclerosis Fig. 35.2 (a) EHE. Radiograph demonstrating lytic lesions over the…

Fig. 68.1 Joint fluid aspiration, acute gout, 400×. The coverslipped unstained specimen is viewed in polarized light with a first-order compensator. In this field are many neutrophils with ingested monosodium…