Document Detail


A non-invasive algorithm accurately predicts advanced fibrosis in hepatitis C: a comparison using histology with internal-external validation.
MedLine Citation:
PMID:  18706734     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
BACKGROUND/AIMS: Biochemical tests and ultrasonography (US) are useful in the non-invasive assessment of liver fibrosis in patients with chronic hepatitis C (CH-C); however histology remains the reference standard. This multicenter, cross-sectional cohort study evaluated the accuracy of APRI (AST-to-platelet-ratio-index) and liver surface ultrasound nodularity (LSN), singularly and sequentially combined in an algorithm, in diagnosing advanced fibrosis (i.e. METAVIR F3,F4), to derive a prediction rule to confirm or exclude F3,F4. METHODS: Four hundred and thirty consecutive CH-C patients with elevated ALT, grouped into a first cohort (training set), and an internal and an external validation cohort, were studied. APRI and LSN were compared to liver biopsy and sequentially combined in order to obtain a predictive rule for advanced fibrosis METAVIR F3,F4. RESULTS: LSN was negative and APRI < or = 1 in 185/430 patients, whereas LSN was positive and APRI>2 in 46/430 cases, with a 94% diagnostic accuracy for presence/absence of F3, F4, respectively. In a further 60/430 patients, F3,F4 was detected with an accuracy of 83%. In the remaining cases no classification was possible. CONCLUSIONS: An algorithm based on APRI and LSN confirms or excludes F3,F4 in 54% of CH-C patients with elevated ALT and suggests a highly probable diagnosis in a further one-sixth of patients, thus rendering liver biopsy unnecessary in these patients.
Authors:
Silvia Paggi; Agostino Colli; Mirella Fraquelli; Mauro Viganò; Paolo Del Poggio; Corinna Facciotto; Massimo Colombo; Guido Ronchi; Dario Conte
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Publication Detail:
Type:  Comparative Study; Journal Article; Validation Studies     Date:  2008-07-24
Journal Detail:
Title:  Journal of hepatology     Volume:  49     ISSN:  0168-8278     ISO Abbreviation:  J. Hepatol.     Publication Date:  2008 Oct 
Date Detail:
Created Date:  2008-09-08     Completed Date:  2009-01-13     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8503886     Medline TA:  J Hepatol     Country:  England    
Other Details:
Languages:  eng     Pagination:  564-71     Citation Subset:  IM    
Affiliation:
Second Division of Gastroenterology, Fondazione IRCCS Policlinico, Mangiagalli e Regina Elena, University of Milan, Milan, Italy.
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MeSH Terms
Descriptor/Qualifier:
Adult
Aged
Algorithms*
Aspartate Aminotransferases / blood
Blood Platelets / pathology
Cohort Studies
Cross-Sectional Studies
Disease Progression
Female
Hepatitis C / blood*,  complications,  ultrasonography*
Humans
Liver / pathology,  ultrasonography
Liver Cirrhosis / blood*,  complications,  ultrasonography*
Male
Middle Aged
Predictive Value of Tests
Sensitivity and Specificity
Severity of Illness Index
Chemical
Reg. No./Substance:
EC 2.6.1.1/Aspartate Aminotransferases

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