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  • Title: Comparison of simple tests for the non-invasive diagnosis of clinically silent cirrhosis in chronic hepatitis C.
    Author: Borroni G, Ceriani R, Cazzaniga M, Tommasini M, Roncalli M, Maltempo C, Felline C, Salerno F.
    Journal: Aliment Pharmacol Ther; 2006 Sep 01; 24(5):797-804. PubMed ID: 16918883.
    Abstract:
    BACKGROUND: Biopsy is the gold standard for assessing cirrhosis in patients with chronic hepatitis C virus infection, but it is expensive and at risk of complications. Alternative non-invasive methods have been developed but their usefulness remains uncertain. AIM: To compare the accuracy of five non-invasive scores in detecting cirrhosis. METHODS: We reviewed the charts and liver biopsies of 228 consecutive, treatment-naïve, hepatitis C virus-positive patients, 13.2% of whom with histological diagnosis of cirrhosis. The five alternative scores were age-platelet index, cirrhosis discriminant score, aspartate transaminases to platelet ratio index, Pohl's index, and aspartate transaminases/alanine transaminases ratio. RESULTS: The specificities of the scores were good (87-100%), but not so their sensitivities (17-67%). Accordingly positive likelihood ratios were generally good but negative likelihood ratios were suboptimal. Combinations of the scores independently related to cirrhosis only slightly change this diagnostic accuracy. Using double cut-offs to exclude/diagnoses cirrhosis, cirrhosis discriminant score classified 21% of patients without misdiagnoses and aspartate transaminases to platelet ratio index classified 85% of case with 9% of misdiagnoses. CONCLUSIONS: The five scores showed variable sensitivities and specificities in detecting liver cirrhosis, both individually and in combination. The use of double cut-off points may make the cirrhosis discriminant score and aspartate transaminases to platelet ratio index useful to reduce the number of patients submitted to liver biopsy.
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