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Pulmonary hamartoma: CT findings 总被引:13,自引:0,他引:13
Siegelman SS; Khouri NF; Scott WW Jr; Leo FP; Hamper UM; Fishman EK; Zerhouni EA 《Radiology》1986,160(2):313-317
Forty-seven patients with a proved (n = 31) or presumed (n = 16) diagnosis of pulmonary hamartoma were studied prospectively by thin-section computed tomography (CT). CT criteria for hamartoma included a diameter of 2.5 cm or less, a smooth edge, and focal collections of fat or fat alternating with areas of calcification. No case of cancer (n = 283) or metastatic disease (n = 72) fulfilled these criteria. Seventeen hamartomas with no detectable calcium or fat were not diagnosed by means of CT. Two other lesions contained diffuse calcium deposits. In 28 lesions, a CT diagnosis of hamartoma was based on the detection of fat (n = 18) or calcium plus fat (n = 10). Twelve such cases were proved histologically by means of thoracotomy or needle biopsy; the remainder, including eight in asymptomatic patients aged 65 years or older, were managed with conservative follow-up. 相似文献
704.
Fracture nonunion: CT assessment with multiplanar reconstruction 总被引:2,自引:0,他引:2
Kuhlman JE; Fishman EK; Magid D; Scott WW Jr; Brooker AF; Siegelman SS 《Radiology》1988,167(2):483-488
Nineteen patients with suspected or possible fracture nonunion underwent computed tomography (CT) with multiplanar reconstruction (MPR). Each case represented a difficult problem in fracture management in which clinical and conventional radiographic examinations had failed to provide a definitive diagnosis. CT with MPR demonstrated nonunion in 13 of 19 cases by delineating the lack of bone bridging across the fracture site in multiple planes. Variable amounts bridging were detected in six cases, indicating partial healing or delayed union. Evaluation of fracture healing with MPR was possible despite remaining metal hardware (ten cases), multiple operations (15 cases), or bone grafting (five cases). CT with MPR aided surgical planning and affected treatment options by providing a more detailed assessment of malalignment and angular deformities, the magnitude of the gap in bone, and the integrity of the adjacent weight-bearing joints in multiple projections. It is an important new modality for evaluating fracture nonunion. 相似文献
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KT WOO YK LAU Grace SL LEE KS WONG SS WEI Gilbert SC CHIANG CH LIM 《Nephrology (Carlton, Vic.)》1997,3(1):31-34
Summary: Proteinuria is one of the bad prognostic indices in IgA nephritis (IgAN). This study compares the pattern of protein excretion in 10 patients with IgAN (IA) with that 5 years later (IB), when they developed renal impairment or hypertension. The pattern of proteinuria was analysed by SDS-PAGE and isoelectric focusing (IEF) and assayed for orosomucoid, α-1-microglobulin, retinol-binding protein, lysozyme, beta-2-microglobulin and N-acetyl-β-D-glucosaminidase activity. The data suggest that the changing pattern of proteinuria from IgA1 to IgA2 may reflect hyperfiltration as well as tubular injury. 相似文献
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708.
Chronic osteomyelitis: bone and gallium scan patterns associated with active disease 总被引:1,自引:0,他引:1
Bone and gallium scans are used to assess osteomyelitis patients with prior bone disease. To refine the criteria for interpreting these scans, the data from 136 consecutive patients with clinically suspected osteomyelitis were reviewed. Active osteomyelitis was diagnosed with surgery or biopsy and culture in 49 patients, excluded with the same criteria in 16, and excluded by clinical follow-up for at least 6 months in 71. Five different scintigraphic patterns were found. The true-positive and false-positive ratios, the likelihood ratios, and posterior probabilities for active osteomyelitis in each pattern were calculated. Only one pattern (gallium uptake exceeding bone-seeking radiopharmaceutical uptake) was indicative of active disease. Other patterns slightly raised or decreased the probability of disease. The extent of these changes varies directly with the prior probability of disease, determined from patient-specific factors (e.g., clinical data, laboratory data, findings on plain films) known best by the referring clinician. 相似文献
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