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Timeline of the patient’s clinical course. AUS: abdominal ultrasonography, ACT: abdominal computed tomography, MRCP: magnetic resonance cholangiopancreatography, DIC-CT: drip infusion cholecystocholangiography, EUS: endoscopic ultrasonography, ERCP: endoscopic retrograde cholangiopancreatography, EGD: esophagogastroduodenoscopy, CZOP: cefozopran, MNZ: metronidazole
