Musculoskeletal Key

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. 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…

Fig. 46.1 Plain radiograph of the proximal humerus. Purely lytic lesion, destroying the cancellous bone. This represents a completely lytic osseous metastasis in women with a follicular carcinoma of the…

(1) Department of Pathology and Laboratory Medicine, Hospital for Special Surgery, New York, NY, USA   Abstract Myeloma is a malignant tumor of plasma cell lineage; these cells proliferate and…

Sites of Involvement The vast majority involve the metaphysis of the femur, humerus, or tibia. The most common location is the posterior distal femur. Rare sites included the craniofacial bones,…

Sites of Involvement Typically, chondroblastoma occurs in the epiphyses of the long bones. While the occurrence is typically at the end of the major tubular bones, it can also occur…

Fig. 59.1 Brown tumor. Well-demarcated lytic lesion involving the proximal tibia Fig. 59.2 (a) Radiolucent lesion seen in the diaphysis of the tibia. (b) CT scan: the lesion erodes the…

Fig. 58.1 Radiograph of a solitary Langerhans cell histiocytosis (eosinophilic granuloma) in the femoral diaphysis of a young child. Lytic lesion with extensive reactive sclerosis and lamellar periosteal reaction. Radiologic…