The adrenal glands are located just above the kidneys and are a vital part of the body’s endocrine system. When a mass is detected on an adrenal gland, most of the time it is benign (not cancerous). Even so, it may require removal if it continues to grow and exert pressure on nearby structures. While most adrenal tumors have few symptoms until their later stages, high blood pressure, low potassium levels, heart palpitations, anxiety or panic attacks, headaches, excessive perspiration, abdominal pain, diabetes, weakness, unusual acne and excessive hair growth are all possible later signs of the disease. Treatment will depend on whether the tumor is benign or cancerous, but may include surgery to remove the growth, hormone therapy, radiation therapy and chemotherapy.