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': 'All the following structures form boundaries of Epiploic foramen, EXCEPT: \nSelect and explain. \nA. Poal vein, B. Inferior vena cava, C. Quadrate lobe of liver, D. First pa of duodenum', 'role': 'user'}, {'content': 'Answer: C \nExplanation: The right margin of the lesser sac opens into the greater sac through the epiploic foramen. The superior boundary of the foramen is foramen by caudate lobe of the liver.Structures forming boundaries of the epiploic foramen are:Anteriorly: free border of lesser omentum, bile duct, hepatic aery and poal vein.Posteriorly: Inferior vena cavaSuperiorly: Caudate process of caudate lobe of liverInferiorly: First pa of duodenum Ref: Clinical Anatomy by Regions By Richard S. Snell page 208.', 'role': 'assistant'}]