This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Anatomy
For bleeding varices of the esophagus, the common operation/operations is/are 
Select and explain. 
A. Poocaval shunt, B. Gastrectomy, C. Splenectomy, D. All of the above
A: Poocaval shunt
Answer: A: Poocaval shunt 
Explanation: In poal hypeension, as in the case of cirrhosis of the liver, the anastomoses become congested and form venous dilatations. Such dilatation can lead to esophageal varices and anorectal varices. Caput medusae can also result. A poacaval shunt (or poal caval shunt) is a treatment for poal hypeension. A connection is made between the poal vein, which supplies 75% of the liver's blood, and the inferior vena cava, the vein that drains blood from the lower two-thirds of the body. Ref:Sabiston 20th edition Pgno :1439