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• W1652227316 abstract "Liver biopsy with measurement of hepatic iron concentration is the most certain procedure for evaluation of iron-storage disease, although use of computed tomography and magnetic resonance imaging procedures recently have been proposed as alternative, noninvasive methods for estimating the degree of iron overload. The results of these imaging procedures were compared with those of other noninvasive techniques and liver biopsies in 48 patients. Final diagnoses, based on synthesis of clinical and laboratory data, included (a) primary hemochromatosis (n = 25; 19 homozygous, 6 heterozygous); (b) secondary hemochromatosis (n = 7); (c) alcoholic liver disease (n = 11); (d) chronic active hepatitis (n = 3); and (e) other (n = 2). Serum ferritin and computed tomography or magnetic resonance scanning had 100% sensitivity in detecting hepatic iron overload more than fivefold above the upper limit of normal (greater than 10.7 mumol Fe/100 mg dry liver) but did not detect lesser degrees of iron overload reliably, including those found in 6 of 13 patients with untreated homozygous primary hemochromatosis and 3 of 7 with secondary hemochromatosis. Computed tomography and magnetic resonance imaging were more specific than ferritin (64% and 92% vs. 21%) in the detection of iron excess, more than five times the upper limit of normal. Among magnetic resonance imaging measures, the ratio of the second echo signal intensities of liver to paraspinous muscle was the most sensitive and most specific for detection of this degree of iron overload. The degree of correlation between hepatic iron concentration and results of noninvasive laboratory or imaging studies were insufficient to permit prediction of hepatic iron content by noninvasive studies alone. It is concluded that computed tomography or magnetic resonance scanning as currently usually used is not cost-effective in routine evaluation of iron overload, although these imaging procedures may play a role in patients in whom liver biopsy is contraindicated. Because of their low cost and ready availability, serum ferritin and transferrin saturation tests remain the preferred screening studies for iron overload. Liver biopsy with quantitative iron measurement remains the study of choice for the definitive diagnosis of hemochromatosis." @default.
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• W1652227316 date "1990-10-01" @default.
• W1652227316 modified "2023-10-18" @default.
• W1652227316 title "Usefulness and limitations of laboratory and hepatic imaging studies in iron-storage disease" @default.
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• W1652227316 doi "https://doi.org/10.1016/0016-5085(90)90629-f" @default.
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