Operative Management of an Incidental Portal Vein Aneurysm in the Setting of an Incarcerated Congenital Diaphragmatic Hernia.

Abstract Portal vein aneurysms are a rare pathologic entity. A 3.7 cm portal vein aneurysm was incidentally discovered in an 80-year-old male patient on imaging for acute abdominal pain secondary to an incarcerated diaphragmatic hernia. The aneurysm was resected, and primary repair of the portal vein was performed during a second look operation after repair of his incarcerated hernia. Operative intervention was opted for this patient because of the aneurysm's size and the fact that there was another indication for abdominal exploration.