This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Abdomen & Pelvis, Subject name: Anatomy
All are tributaries of portal vein EXCEPT: 
Select and explain. 
A. Left gastric vein, B. Right gastric vein, C. Inferior pancreatoduodenal vein, D. Superior mesenteric vein
C: Inferior pancreatoduodenal vein
Answer: C: Inferior pancreatoduodenal vein 
Explanation: Ans. C Inferior Pancreatoduodenal veinTributaries of Portal Vein1. Left Gastric vein2. Right Gastric vein3. Superior Pancreatoduodenal vein4. Splenic vein5. Superior mesenteric vein6. Inferior mesenteric vein7. Cystic veinExtra Mile* Hepatic portal vein is a blood vessel that conducts blood from GIT and spleen to the liver.* Liver receives 75% of its blood through hepatic portal vein, and the remainder from hepatic artery proper.* Note: blood leaves the liver to the heart in the hepatic vein.