MKI67 and pancreatic insulinoma: Regarding the 30 WD-pNETs G3, there were 2 functional tumors (1 insulinoma and 1 VIPoma); the numbers of stage I, stage II, stage III and stage IV were 9, 13, 0 and 8, respectively; the median Ki-67 and mitotic count were 25 and 16.5, respectively (range 1–50 and 2–60).