Radiographics : a review publication of the Radiological Society of North America, Inc
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Review
Imaging of osteochondroma: variants and complications with radiologic-pathologic correlation.
Osteochondroma represents the most common bone tumor and is a developmental lesion rather than a true neoplasm. It constitutes 20%-50% of all benign bone tumors and 10%-15% of all bone tumors. Its radiologic features are often pathognomonic and identically reflect its pathologic appearance. ⋯ Continued lesion growth and a hyaline cartilage cap greater than 1.5 cm in thickness, after skeletal maturity, suggest malignant transformation. Variants of osteochondroma include subungual exostosis, dysplasia epiphysealis hemimelica, turret and traction exostoses, bizarre parosteal osteochondromatous proliferation, and florid reactive periostitis. Recognition of the radiologic spectrum of appearances of osteochondroma and its variants usually allows prospective diagnosis and differentiation of the numerous potential complications, thus helping guide therapy and improving patient management.
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Penile fracture is a rare but serious urologic condition that typically requires surgical repair. Because of its multiplanar capability and excellent tissue contrast, magnetic resonance (MR) imaging can be a useful diagnostic tool in the evaluation of patients with acute penile fracture. MR imaging can accurately depict the presence, location, and extent of tunical tear, which manifests as discontinuity of the tunica albuginea. ⋯ Associated injuries to adjacent structures (eg, corpus spongiosum, urethra) can also be demonstrated. In patients with no penile fracture, MR imaging can demonstrate an intact tunica albuginea and the presence of intracavernosal or extratunical hematoma. It remains uncertain whether the routine use of contrast material-enhanced MR imaging is justified, and further study is needed to determine the role of this modality.
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Case Reports
Ultrasound-guided hydrostatic reduction of childhood intussusception: technique and demonstration.
The authors review the technique of ultrasound-guided hydrostatic reduction of childhood intussusception and illustrate, in real-time fashion, the treatment of three cases with this technique. Two cases of successful reduction of ileocolic intussusception are demonstrated. The third case is an example of the complex fronded appearance of ileo-ileocolic intussusception and failed reduction. This technique is recommended as an alternative method for the treatment of childhood intussusception, as it does not involve ionizing radiation and is a simple and safe procedure.