Gastroenteropancreatic endocrine tumors (GEP ETs) constitute a spectrum of tumors that arise throughout the entire body but are drawn together under a common definition based on the expression of ...

The existence of primary lymph node (LN) gastrinoma is questionable and controversial. In fact, the presence of gastrinoma in such uncommon site raises the possibility of metastasis from another ...

Correspondence to Professor Helge Lyder Waldum, Department of Clinical and Molecular, University of Science and Technology, Trondheim, Norway; helge.waldum{at}ntnu.no Around 1980, it became clear that ...

Helge L. Waldum (born 1946), MD PhD, gastroenterologist. He is also docteur d'État (Paris), Knight First Class of the Norwegian Royal Order of St. Olav, and editor-in-chief of the Scandinavian Journal ...

Professor Jon Arne Søreide, MD PhD, is a specialist in general surgery and gastrointestinal surgery. The author has completed the ICMJE form and declares no conflicts of interest. Professor Erlend Hem ...

Pancreatic neuroendocrine tumors (pancreatic NETs or PNETs), also called pancreatic endocrine tumors or islet cell tumors, are tumors that form from the abnormal growth of hormone-producing cells in ...

A 70-year-old man with diabetes and gastrinoma presented to the Department of Ophthalmology at Kochi Medical School Hospital with a 2-month history of decreased visual acuity (20/1000) in his right ...