This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Bile duct, Subject name: Surgery
[{'content': 'After 3 weeks of percutaneous transhepatic cholangiography a patient presented with pain upper abdomen, melena and jaundice. Best investigation for this patient should be: \nSelect and explain. \nA. CECT, B. MRI, C. PET, D. Angiography', 'role': 'user'}, {'content': 'Answer: D \nExplanation: The case is classical presentation of HEMOBILIA. The most common predisposing factor is PTC. . Investigation of choice for diagnosis - ANGIOGRAPHY RX:Conservative management in most patients ANGIOGRAPHY + EMBOLIZATION- for rest of patients.', 'role': 'assistant'}]