text: CT or MRI studies may show normal<unk> ic tissue, with or without a small<unk> ic duct, encircling the duodenum.
option_0: Annular pancreas CT
option_1: Zollinger-Ellison syndrome CT
option_2: Zollinger-Ellison syndrome CT scan
option_3: Whipple's disease CT
option_4: Pancreatitis CT
option_5: Zollinger-Ellison syndrome MRI
option_6: Chronic pancreatitis ultrasound
option_7: Sialolithiasis CT