The role of the adrenal glands is to release a number of hormones directly into the bloodstream, many of which are involved in how the body responds to stress, and some of which are essential for survival. Both parts of the adrenal glands (the adrenal cortex and the adrenal medulla) perform separate functions.

The adrenal gland is an important endocrine gland located deep in the peritoneum. Adrenal neoplasms are tumors that develop in the adrenal glands, this is a rare disease that can cause complications that seriously affect the patient's health.