Islet cell carcinoma or nesidioblastoma is an uncommon cancer of the endocrine (hormone producing) pancreas. ...

Islet cell carcinoma or nesidioblastoma is an uncommon cancer of the endocrine (hormone producing) pancreas.

Pancreatic endocrine tumors (PETs) are also known as endocrine pancreatic tumors (EPTs) or islet cell tumors. PETs are assumed to originate generally in the islets of Langerhans within the pancreas although they may originate outside of the pancreas. The term pancreatic cancer almost always refers to adenopancreatic cancer, also known as exocrine pancreatic cancer. Adenopancreatic cancers are generally very aggressive, and are not a neuroendocrine cancers. About 95 percent of pancreatic tumors are adenopancreatic; about 1 or 2 percent are PETs.