ORTHOPEDIC

Osteoid Osteoma

Jan 2, 2017 by in ORTHOPEDIC Comments Off on Osteoid Osteoma

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…

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Juxta-articular Bone Cyst

Jan 2, 2017 by in ORTHOPEDIC Comments Off on Juxta-articular Bone Cyst

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…

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Lymphoma of Bone

Jan 2, 2017 by in ORTHOPEDIC Comments Off on Lymphoma of Bone

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…

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Chordoma

Jan 2, 2017 by in ORTHOPEDIC Comments Off on Chordoma

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…

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Hemangioma

Jan 2, 2017 by in ORTHOPEDIC Comments Off on Hemangioma

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…

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Phosphaturic Mesenchymal Tumor

Jan 2, 2017 by in ORTHOPEDIC Comments Off on Phosphaturic Mesenchymal Tumor

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…

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Bone Infarct

Jan 2, 2017 by in ORTHOPEDIC Comments Off on Bone Infarct

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…

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Epithelioid Hemangioendothelioma

Jan 2, 2017 by in ORTHOPEDIC Comments Off on Epithelioid Hemangioendothelioma

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…

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Gout

Jan 2, 2017 by in ORTHOPEDIC Comments Off on Gout

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…

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