You may want to consider whether multiple endocrine neoplasia type 1 (MEN-1) is a possibility.
This is a familial disorder characterized by predisposition to tumors of the parathyroid glands (which occur in nearly all patients by age 50 years), anterior pituitary, and pancreatic islet cells/GI tumors.
Primary hyperparathyroidism is the most common manifestation of MEN-1, with over 90 percent penetrance by age 40 to 50. This leads to a high calcium level, which may predispose you to kidney stones.
Regarding the GI tumors, the most common cause of symptoms is the Zollinger-Ellison (gastrinoma) syndrome. About 40 percent of patients with MEN-1 have either the Zollinger-Ellison syndrome or asymptomatic elevation in serum gastrin concentrations.
I would approach your physician with the possibility of this syndrome and make the appropriate referrals - an endocrinologist would be a good start.
Followup with your personal physician is essential.
This answer is not intended as and does not substitute for medical advice - the information presented is for patient education only. Please see your personal physician for further evaluation of your individual case.
Thanks,
Kevin, M.D.
Bibliography:
Arnold. Approach to therapy in multiple endocrine neoplasia type 1. UptoDate, 2004.