Hello @sunflower1398, and welcome to the NETs support group on Mayo Clinic Connect. You are wise to be seeking a second opinion. I highly recommend obtaining a second opinion from a NET specialist. There are NET specialists at all three Mayo Clinic locations (appointment information is available at http://mayocl.in/1mtmR63). If it is not possible to be seen at a Mayo facility, here is a link from the Neuroendocrine Tumor Research Foundation with NET specialists in the U.S.; https://netrf.org/for-patients/neuroendocrine-tumor-doctor-database/page/8/

General oncologists aren't as well-versed in the latest treatments for rare cancers such as this one. I would also like to invite @ahtaylor to post with you. She has experience with insulinoma and has been actively involved in her treatment.

How do you feel when you exercise and have hypoglycemic episodes?