MRI and CT features of hyperplastic callus in osteogenesis imperfecta tarda.

We describe the MRI and CT findings of hyperplastic callus formation simulating a tumour of pelvis in patient with osteogenesis imperfecta tarda. Possible differential diagnoses and the impact of different imaging techniques on the correct diagnosis are discussed.

MR imaging of meniscal subluxation in the knee.

PURPOSE: The aim of this study was to establish diagnostic criteria for meniscal subluxation, and to determine whether there was any connection between meniscal subluxation and other common meniscal and knee-joint abnormalities. MATERIAL AND METHODS: The normal position of the meniscal body was assessed in 10 asymptomatic volunteers. MR signs of meniscal subluxation were evaluated retrospectively in 60 symptomatic patients with pain in the knee, impaired mobility, and/or joint swelling who had no clear diagnosis after the evaluation of case history, clinical examination, and radiography. The criterion for subluxation of the meniscus was defined as a distance of > or = 3 mm between the peripheral border of the meniscus and the edge of the tibial plateau. RESULTS: In the volunteers, the mean distance from the medial meniscus to the edge of the tibial plateau was 0.07 mm, and that from the lateral meniscus was 0 mm. In 55 symptomatic patients without meniscal subluxation, the mean distance from the meniscus to the edge of the tibial plateau was 0.27 mm. Five patients (8%) had evidence of meniscal subluxation, 4 in the medial meniscus and one in the lateral meniscus. The most commonly associated knee abnormality was joint effusion in 5 knees and osteoarthritis in 2 knees. CONCLUSION: Meniscal subluxation was not a rare finding with MR imaging in patients with painful knees. Meniscal subluxation was associated with other knee abnormalities such as joint effusion or osteoarthritis.

[Treatment of iatrogenic renal vascular lesions using selective renal embolization]. / Liecba iatrogénnej cievnej lézie oblicky selektívnou renálnou embolizáciou.

Two patients--one man (62 years) and one woman (69 years) with a iatrogenic renal arterial lesion were treated by percutaneous embolization. Both patients had undergone percutaneous nephrolitholapaxy. Both developed massive haematuria after surgery. Because haematuria could not be controlled by conservative means, angiography was indicated and subsequent superselective embolization of the bleeding artery. In both patients Gelfoam particles were used. The operation was without complications in both patients and produced a prompt effect. Within 4 months after operation no relapse developed. The authors did not observe an adverse effect associated with embolization.