Metastatic adrenal gland cancer, also known as adrenal metastasis, is a condition where cancer originating from another part of the body spreads to the adrenal glands. The adrenal glands are small, hormone-producing organs located above the kidneys. Metastatic adrenal gland cancer is more common than primary adrenal gland cancer and can result from various types of primary cancers, such as lung, breast, or kidney cancer.