Multiple endocrine neoplasia is a group of disorders that affect the body's network of hormone-producing glands. Hormones are chemical messengers that travel through the bloodstream and regulate the function of cells and tissues throughout the body. Multiple endocrine neoplasia typically involves tumors in at least two endocrine glands; tumors can also develop in other organs and tissues. These growths can be noncancerous or cancerous .If the tumors become cancerous, the condition can be life-threatening.