Neuroendocrine tumor of pancreas


No biliary obstruction - this is a classic mode of presentation for pancreatic adenocarcinomas. 

Neuroendocrine tumors can occasionally manifest as primarily cystic lesions and are distinguishable from other cystic neoplasms by their hypervascular rim as in this case.

75% of patients with neuroendocrine tumors have metastatic disease at presentation, most commonly in the liver and less frequently in bone as in our case.