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Fig. 1 | Surgical Case Reports

Fig. 1

From: Intraductal papillary mucinous neoplasm in an annular pancreas: a case report

Fig. 1

Diagnostic images of the intraductal papillary mucinous neoplasm (IPMN) in the patient’s annular pancreas. a A multilocular cystic mass was detected by abdominal ultrasonography (arrow). The cystic mass was 30 mm in diameter. No intramural nodules or calcifications were present in the cystic lesion. Bar, 5 mm. b Abdominal computed tomography revealed the presence of pancreatic tissue encircling the descending part of the duodenum (arrow). c Magnetic resonance cholangiopancreatography showed the annular duct encircling the duodenum. A 30-mm-diameter cystic mass was identified in the annular segment, and the mass was linked to the annular duct (arrow). The patient was preoperatively diagnosed with branch-duct-type IPMN (adenoma) with low-grade malignancy. d Schema of the annular pancreas in the present case. The yellow region indicates the ventral pancreas (VP). The orange region indicates the dorsal pancreas (DP). The red lines indicate the pancreatic ducts. The dotted line shows the resection line. Single asterisk shows the duct of Wirsung. Double asterisks show the duct of Santorini. C cystic mass, D duodenum

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