Can eating processed meats in sandwiches for lunch throughout the years have a direct connection to cause a neuroendocrine tumor? or, since a net is so rare that it has not been sufficiently researched to know?

Good question. Without reaearch don't know. But no way I can figure out how they would be connected. They do run in some families and gallop in others so do good family tree for such tumors. The most dangerous thing is the salt in them. Read the label and see how much there is. At yourage the goal sodium intake should be less that 1,500 mg Na/day. Esp is your BP is above 120/80. DASH Diet best.