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Title: Hepatic Histology and Morphometric Measurements in Idiopathic Extrahepatic Portal Vein Thrombosis in Children, Correlated to Clinical Outcome of Meso-Rex Bypass
Authors: Niramol Tantemsapya
Riccardo Superina
Deli Wang
Grace Kronauer
Peter F. Whitington
Hector Melin-Aldana
Thomas Jefferson University Hospital
Northwestern University Feinberg School of Medicine
Faculty of Medicine, Siriraj Hospital, Mahidol University
Children's Memorial Research Center
Keywords: Medicine
Issue Date: 1-Jun-2018
Citation: Annals of Surgery. Vol.267, No.6 (2018), 1179-1184
Abstract: Copyright © 2017 Wolters Kluwer Health, Inc. All rights reserved. Objective: The aim of this study was to correlate clinical, histologic, and morphometric features of the liver in children with extrahepatic portal vein thrombosis (EHPVT), with surgical outcome after Meso-Rex bypass (MRB). Background: Idiopathic EHPVT, a significant cause of portal hypertension, is surgically corrected by MRB. Correlation of histologic and morphometric features of the liver with outcome has not been reported in children. Methods: We retrospectively reviewed clinical and intraoperative data of 45 children with idiopathic EHPVT. Liver samples were obtained at the time of MRB. Morphometric measurements of portal tract structures were performed and correlated with surgical outcome. Median follow-up was 3.65 years after surgery (range 1.5 to 10 years). Results: Thirty-seven (82.2%) children had successful MRB. There was no association between age, sex, and suture material with surgical outcome. Average patient age was higher in patients with postoperative complications (P=NS). Portal fibrosis, bridging, parenchymal nodules, portal inflammation, hepatocellular swelling, steatosis, dilatation of portal lymphatics, and periductal fibrosis did not show a significant difference between the 2 groups. Portal vein and bile duct area index were significantly smaller in the unsuccessful group (P = 0.004 and 0.003, respectively). A portal vein area index <0.08 had a lower chance of successful surgical outcome. Hepatic artery area index was not significantly different. Measured intraoperative portal blood inflow was the only significant clinical factor affecting surgical outcome (P = 0.0003). Conclusions: Low portal vein area index and intraoperative portal blood inflow may be negative prognostic factors for MRB outcome in children with idiopathic EHPVT. Average patient age was higher, although not statistically significant, in patients with postoperative complications.
ISSN: 15281140
Appears in Collections:Scopus 2018

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