Skeletal radiology
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Comparative Study
MRI of pediatric growth plate injury: correlation with plain film radiographs and clinical outcome.
To evaluate pediatric growth plate injuries with conventional radiographs and magnetic resonance imaging (MRI). To review potential clinical impact of MRI on subsequent patient management and outcome. ⋯ MRI has an important role in the evaluation of acute pediatric growth plate injury, particularly when diagnostic uncertainty persists following the evaluation of conventional radiographs. MRI allows detection of occult fractures, may alter Salter Harris staging, and in the reported study it frequently resulted in a change in patient management.
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A 47-year-old man presented with a painless mass of 7 months' duration, on the plantar aspect of the great toe of the right foot. Radiographs and CT images initially suggested an osteochondroma arising from the proximal phalanx of the great toe but there was no continuity between the medullary canal of the phalanx and the lesion. ⋯ The aggressive growth of this lesion may clinically suggest a neoplasm. Histological features, however, are those of a reactive lesion.
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The aim of this study was to assess the capability of high-resolution images obtained with a commercially available pelvic phased-array surface coil to demonstrate normal hip anatomy. ⋯ The articular cartilage, cortex, superior labrum, and iliofemoral ligament were well visualized on proton density weighted fat saturation (PDF) images. The femoral and obturator vessels, obturator nerve, and various muscles were easily seen on T1-weighted images. High-resolution imaging of the hip is achievable in a reasonable amount of time using newer phased-array surface coils and may play an increasing role in the future evaluation of hip disorders.
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To describe the imaging characteristics of stress fractures of the heads of the metatarsal bones, emphasizing their difference from the more common metatarsal shaft and neck stress fractures. ⋯ Stress fractures (i.e., fatigue and insufficiency fractures) of the head of the metatarsal bones occasionally occur. Because of their less recognized appearance on routine radiographs and MR images, they are frequently overlooked.
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The case of a 51-year-old man with Ewing's sarcoma of the thumb is presented. The tumor involved the distal phalanx of the right thumb, associated with an impressive extraskeletal mass. Histology revealed a round cell sarcoma with a positive immunoreactivity with monoclonal antibody O13. Five years after disarticulation at the metacarpophalangeal joint, the patient is alive without recurrence or metastasis.