This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anatomy
Poocaval anastomosis is seen at all of the following places, except? 
Select and explain. 
A. Gastroesophageal junction (lower end of esophegus), B. Rectum, C. Spleen, D. Liver
C: Spleen
Answer: C: Spleen 
Explanation: Spleen