PMC5836225_01
Preoperative radiological findings. a Pelvic contrast-enhanced CT showed a ring-shaped enhanced mass near the dome of the urinary bladder (yellow dotted line). b Pelvic T2-weighted MRI (sagittal section) showed a cystic mass with a partly irregular wall and fistula formation to the urinary bladder (yellow dotted line).
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F1
Computerized tomography (CT) with a contrast agent for the refractory symptoms showed a ring-shaped enhanced mass (4.0 cm) near the dome of the urinary bladder (Fig. 1a). Magnetic resonance imaging (MRI) showed a cystic mass close to the urinary bladder with a partly irregular wall and a fistula to the urinary bladder (Fig. 1b).
Histological findings. a Meckel diverticulum (A) and ectopic pancreatic tissue (B). HE. x25. b Adenocarcinoma arising from the ectopic pancreatic tissue (C) and ectopic pancreatic tissue (D). HE. x100.
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F2
Histological findings revealed a fistula arising from a papillary adenocarcinoma of ectopic pancreatic tissue in a Meckel diverticulum (Fig. 2a, b).