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  • Title: Orthotopic liver transplantation for portosystemic encephalopathy in an adult with congenital absence of the portal vein.
    Author: Wojcicki M, Haagsma EB, Gouw AS, Slooff MJ, Porte RJ.
    Journal: Liver Transpl; 2004 Sep; 10(9):1203-7. PubMed ID: 15350015.
    Abstract:
    Congenital absence of the portal vein (CAPV) is a very rare venous malformation in which mesenteric venous blood drains directly into the systemic circulation. There is no portal perfusion of the liver and no portal hypertension. This abnormality is usually coincidentally discovered in children, the majority of whom have no signs of encephalopathy and only slightly abnormal liver function tests. Additional anomalies common in CAPV are cardiovascular abnormalities and hepatic tumors. To date, only 5 adult patients (>18 years) with CAPV have been described, none of whom underwent liver transplantation. We describe a 45-year-old man with CAPV and end-stage renal insufficiency due to focal segmental glomerulopathy, who developed therapy-resistant encephalopathy with intermittently high ammonia levels. The patient underwent a combined liver and kidney transplantation and is doing well at 2.5 years of follow-up. Histopathological examination of the native liver showed no portal vein branches in the portal tracts. In conclusion, our experience suggests that, although children with CAPV usually have no symptoms of encephalopathy, this may still develop at a later stage in adult life. When encephalopathy becomes refractory to medical therapy, orthotopic liver transplantation (OLT) can be successfully performed with restoration of normal cerebral function.
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