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
[{'content': 'Poocaval anastomosis is seen at all of the following places, except? \nSelect and explain. \nA. Gastroesophageal junction (lower end of esophegus), B. Rectum, C. Spleen, D. Liver', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Spleen', 'role': 'assistant'}]