Type II Abernethy malformation presenting with heart failure: A case report.

Congenital extrahepatic portosystemic shunt (CEPS), known as Abernethy malformation, is a rare vascular anomaly involving aberrant communication between the portal vein (PV) and the inferior vena cava (IVC). In this case, a 51-year-old man with chronic comorbidities presented primarily with symptoms of heart failure rather than hepatic dysfunction. Following endovascular coil embolization of the shunt, the patient's heart failure symptoms improved significantly. This report outlines the diagnostic process and treatment strategy, highlighting the safety and feasibility of a single-session embolization in patients without elevated portal pressure.