Solid Pseudopapillary Neoplasm Collides With a Well-Differentiated Pancreatic Endocrine Neoplasm in an Adult Man

Solid pseudopapillary neoplasm (SPN) of the pancreas is a rare, clinicopathologically distinct neoplasm with a tendency to affect young women. The histogenesis of SPN is not well defined. Pancreatic endocrine neoplasms (PENs) are also uncommon tumors of the pancreas. Our comprehensive review of the literature did not yield any reported cases of collision tumors of the above two neoplasms. We report a case of such a collision tumor in a...