Background: Congenital portosystemic shunts (CPSS) with intrahepatic portal vein (IHPV) hypoplasia or absence cause encephalopathy or pulmonary hypertension (PH). Acute shunt closure may result in postoperative portal hypertension. The aim of this study was to propose a surgical strategy according to the anatomical types of CPSS and IHPV.
Methods: Twenty-three CPSS patients were diagnosed from1990 to 2015. All patients were evaluated by computed tomography, angiography, and PV pressure monitoring under a shunt occlusion test. CPSS were categorized into 5 types according to the anatomical shunt location.
Results: The median age at diagnosis was 34months. Three of 23 total patients, who had an extrahepatic portosystemic shunt with a hypoplastic IHPV, died before treatment initiation because of severe PH. Fourteen cases received surgical or interventional treatment at the median age of 5years. A total of 6 cases received surgical therapy, including liver transplants for 2 absent IHPV cases. The remaining 8 cases received interventional coiling. All shunt ligations were successfully accomplished in 1-stage ligation without any complications. After the treatment, the hypoplastic IHPV gradually enlarged with an efficient portal inflow.
Conclusion: A precise pretreatment anatomical evaluation of CPSS and IHPV types is mandatory for the selection of surgical treatment.
Level Of Evidence: Diagnostic study - level II and treatment study - level III.
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