Gastroenterol Hepatol. 2014;37(2):58---65
Gastroenterología y Hepatología
www.elsevier.es/gastroenterologia
ORIGINAL
Can transient elastography, Fib-4, Forns Index, and Lok
Score predict esophageal varices in HCV-related
cirrhotic patients?
Eman M. Hassan
a
, Dalia A. Omran
a,*
, Mohamad L. El Beshlawey
a
,
Mahmoud Abdo
a
, Ahmad El Askary
b
a
Department of Endemic Medicine and Hepatology, Cairo University, Cairo, Egypt
b
Department of Internal Medicine, Ministry of Heath Hospitals, Cairo, Egypt
Received 14 June 2013; accepted 20 September 2013
Available online 21 December 2013
KEYWORDS
Esophageal varices;
HCV;
Liver stiffness
measurement;
Noninvasive
predictors;
Serum fibrosis scores
Abstract
Background: Gastroesophageal varices are present in approximately 50% of patients with liver
cirrhosis. The aim of this study was to evaluate liver stiffness measurement (LSM), Fib-4, Forns
Index and Lok Score as noninvasive predictors of esophageal varices (EV).
Methods: This prospective study included 65 patients with HCV-related liver cirrhosis. All
patients underwent routine laboratory tests, transient elastograhy (TE) and esophagogastro-
duodenoscopy. FIB-4, Forns Index and Lok Score were calculated. The diagnostic performances
of these methods were assessed using sensitivity, specificity, positive predictive value, negative
predictive value, accuracy and receiver operating characteristic curves.
Results: All predictors (LSM, FIB-4, Forns Index and Lok Score) demonstrated statistically sig-
nificant correlation with the presence and the grade of EV. TE could diagnose EV at a cutoff
value of 18.2 kPa. Fib-4, Forns Index, and Lok Score could diagnose EV at cutoff values of 2.8,
6.61 and 0.63, respectively. For prediction of large varices (grade 2, 3), LSM showed the highest
accuracy (80%) with a cutoff of 22.4 kPa and AUROC of 0.801. Its sensitivity was 84%, specificity
72%, PPV 84% and NPV 72%. The diagnostic accuracies of FIB-4, Forns Index and Lok Score were
70%, 70% and76%, respectively, at cutoffs of 3.3, 6.9 and 0.7, respectively. For diagnosis of large
esophageal varices, adding TE to each of the other diagnostic indices (serum fibrosis scores)
increased their sensitivities with little decrease in their specificities. Moreover, this combination
decreased the LR- in all tests.
Conclusion: Noninvasive predictors can restrict endoscopic screening. This is very important as
non invasiveness is now a major goal in hepatology.
© 2013 Elsevier España, S.L. and AEEH y AEG. All rights reserved.
∗
Corresponding author.
E-mail address: daliaomran2007@yahoo.com (D.A. Omran).
0210-5705/$ – see front matter © 2013 Elsevier España, S.L. and AEEH y AEG. All rights reserved.
http://dx.doi.org/10.1016/j.gastrohep.2013.09.008