Fig. 6

Pathologic analysis. a Macroscopic findings. b Microscopic findings of pancreas cyst wall. c Microscopic findings of colon mucosa. Pus accumulated inside the pancreatic cyst and renal cyst. The cyst was a simple cyst lined by mucinous epithelium. There was no underlying stromal condensation or epithelial dysplasia. Communication with the native pancreatic ducts was not observed. The resected colon adhesive pancreatic wall revealed a fistula-like depression on the mucosal side of the colon (↘).Mucinous nonneoplastic cyst of the pancreas fistula to the colon was the presumed source of infection