A primary adrenal gland tumor is very uncommon, and exact statistics are not available for this type of tumor in the United States. It is estimated that approximately 300 adults in the United States are diagnosed each year with adrenal cortical cancer. This type of cancer is much less common than an adrenal adenoma, a benign tumor that is more common for middle-age and older adults. The average age of a person diagnosed with an adrenal gland tumor is between 45 and 50; however, these tumors can occur at any age. More women than men tend to be diagnosed with adrenal gland tumors.

Statistics should be interpreted with caution. These estimates are based on data from thousands of people with this type of tumor in the United States, but the actual risk for a particular individual may differ. It is not possible to tell a person how long he or she will live with an adrenal gland tumor.

Statistics adapted from the American Cancer Society.