"type Ib: superior mesenteric vein and splenic vein join to form a short extra-hepatic portal vein which drains into a systemic vein (inferior vena cava, right atrium or iliac veins)"
Expected headings
"Subtypes"
"Associations"
"type I: end-to-side shunt; superior mesenteric and splenic vein drain separately into inferior vena cava"
"type II: side-to-side shunts; superior mesenteric vein and splenic vein form a common trunk before draining into the inferior vena cava"