:Las fístulas portosistémicas venosas intrahepáticas no debidas a traumatismos o biopsia son raras y su causa se discute en la bibliografía, donde se postula un origen congénito o adquirido debido a cirrosis e hipertensión portal. La encefalopatía hepática se presenta en los casos en los que hay una cirrosis hepática asociada. Se presenta un caso de una fístula aneurismática portohepática venosa de diagnóstico incidental mediante ecografía convencional, confirmada posteriormente por ecografía Doppler y tomografía computarizada abdominal. Debido a la ausencia de clínica de encefalopatía hepática, se desestimó el tratamiento percutáneo intravascular o quirúrgico.
:Intrahepatic portosystemic venous shunts not related to trauma or biopsy are infrequent and their etiology is controversial. A congenital or acquired origin due to cirrhosis and portal hypertension has been proposed. Hepatic encephalopathy is present when there is associated cirrhosis. We describe a case of aneurysmal portohepatic venous fistula that was incidentally diagnosed with conventional ultrasonography and was subsequently confirmed by Doppler ultrasonography and computed tomography scan. Because there were no symptoms of encephalopathy, no surgical or vascular percutaneous treatment was provided.