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.
Arnold. Approach to therapy in multiple endocrine neoplasia type 1. UptoDate, 2004.
have you been checked for hyperparathyroidism?