Published in:
01-03-2004 | Clinical Image
Discrete synchronous multifocal osteoid osteoma of the femur
Published in: Pediatric Radiology | Issue 3/2004
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A 14-year-old boy presented with 1-year history of pain in the right upper thigh and groin, which was more intense during the night and was relieved by aspirin. Radiography showed a well-circumscribed sclerotic area proximal to the right lesser trochanter, adjacent to the medial cortex (Fig. 1). CT revealed two separate circumscribed sclerotic and lytic lesions in the intertrochanteric region (Fig. 2). En-bloc resection of both lesions was done under fluoroscopic guidance. Histopathological examination confirmed two osteoid osteomas. The patient remained asymptomatic 36 months after resection.
Fig. 1.
Radiograph showing a well-circumscribed sclerotic area proximal to the right lesser trochanter, adjacent to the medial cortex
Fig. 2a, b.
CT showing two nidi at the same level, but discontinuous and not enclosed by a single sclerotic shell. The intramedullary lesion appears as a halo of sclerotic bone. The intracortical lesion is anteromedial in relation to the first lesion and lytic in nature with surrounding cortical thickening, typical of an osteoid osteoma
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