Adrenal Gland Tumors

What is Adrenal Gland Tumors?

Adrenal gland tumors are abnormal growths that develop in the adrenal glands. These small glands sit on top of each kidney and produce hormones that control metabolism, blood pressure, and stress response. Most adrenal tumors are benign, meaning they are not cancerous and do not spread to other parts of the body.

Adrenal tumors can be functional or nonfunctional. Functional tumors produce extra hormones like cortisol, aldosterone, or adrenaline, which can cause noticeable symptoms. Nonfunctional tumors do not make hormones and often go unnoticed until found during imaging tests for other health issues. Many adrenal tumors are discovered by accident and never cause problems.

While most adrenal tumors are harmless, some can be cancerous or cause serious health problems by making too much of certain hormones. Early detection helps doctors monitor these growths and decide if treatment is needed. Understanding your risk factors and recognizing symptoms can lead to earlier diagnosis and better outcomes.

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Symptoms

Many people with adrenal gland tumors have no symptoms at all, especially if the tumor is small and nonfunctional. When symptoms do occur, they depend on which hormones the tumor produces.

High blood pressure that is difficult to control
Rapid or irregular heartbeat
Unexplained weight gain, especially in the face and abdomen
Muscle weakness or fatigue
Excessive sweating or flushing
Anxiety, panic attacks, or feelings of dread
Purple or pink stretch marks on the skin
Increased thirst and urination
Changes in sex hormone levels causing irregular periods or excess hair growth
Abdominal or back pain if the tumor is large

Some people remain symptom-free for years, while others develop multiple signs depending on hormone levels. Symptoms may develop slowly or appear suddenly.

Causes and risk factors

The exact cause of most adrenal gland tumors remains unknown. Some tumors develop randomly without clear triggers, while others have genetic links. Certain inherited conditions like multiple endocrine neoplasia, von Hippel-Lindau disease, and Li-Fraumeni syndrome increase the risk of developing adrenal tumors. Family history of adrenal or endocrine tumors may also raise your risk.

Risk factors include being over age 40, though tumors can occur at any age. Women are slightly more likely to develop certain types of adrenal tumors. Smoking and obesity may contribute to tumor development. Chronic stress does not directly cause tumors, but it can affect adrenal function over time. Most adrenal tumors are discovered by chance during scans for unrelated conditions.

How it's diagnosed

Doctors diagnose adrenal gland tumors using a combination of imaging tests and blood or urine tests. CT scans and MRI imaging help locate tumors and determine their size and characteristics. Blood tests measure hormone levels including cortisol, aldosterone, and catecholamines to see if the tumor is producing excess hormones.

In some cases, doctors may check for adrenal antibodies, which can indicate an immune response to adrenal tissue. A high titer of these antibodies could potentially suggest the presence of a tumor, though this is rare. Talk to your doctor about which specialized tests are right for your situation. Most adrenal tumors require imaging and hormone testing that goes beyond routine blood work.

Treatment options

Treatment for adrenal gland tumors depends on the type, size, and whether the tumor produces hormones.

Regular monitoring with imaging scans for small, nonfunctional tumors that cause no symptoms
Surgical removal for tumors larger than 4 centimeters, functional tumors, or cancerous growths
Medications to block hormone production or control symptoms like high blood pressure
Lifestyle changes including a balanced diet, regular exercise, and stress management
Limiting sodium intake if the tumor produces aldosterone
Avoiding caffeine and stimulants if the tumor produces adrenaline
Radiation therapy or chemotherapy for cancerous tumors that have spread
Hormone replacement therapy after surgery if both adrenal glands are affected

Work closely with an endocrinologist or oncologist to develop a treatment plan. Many benign tumors require only observation, while others need active treatment.

Frequently asked questions

Benign adrenal tumors do not spread to other parts of the body and are usually not life-threatening. Malignant tumors are cancerous and can invade nearby tissues or spread to distant organs. Most adrenal tumors are benign, and only about 5% of adrenal tumors are cancerous. Your doctor can determine the type through imaging and sometimes biopsy.

Adrenal tumors typically do not disappear without treatment. Small, benign tumors often remain stable for years and may never require intervention. Your doctor will monitor the tumor with regular imaging to check for growth or changes. If the tumor grows or starts producing hormones, treatment may become necessary.

Adrenal tumors are found in about 3 to 10% of people who have abdominal CT scans for other reasons. Most are small, benign, and cause no symptoms. The likelihood of finding an adrenal tumor increases with age. Cancerous adrenal tumors are rare, affecting only about 1 to 2 people per million each year.

Blood tests measure hormone levels like cortisol, aldosterone, DHEA-S, and metanephrines to see if a tumor is functional. In rare cases, doctors may check for adrenal antibodies, which can indicate an immune response to adrenal tissue. Urine tests also measure hormone breakdown products. Most diagnosis requires imaging like CT or MRI scans along with hormone testing.

Surgery is recommended for tumors larger than 4 centimeters, tumors that produce excess hormones, or tumors that appear cancerous on imaging. Small, nonfunctional tumors usually just need monitoring every 6 to 12 months. Your doctor will consider the tumor's size, appearance, hormone activity, and growth rate when deciding on treatment. Many people never need surgery.

While lifestyle changes cannot eliminate tumors, they can help manage symptoms and support overall adrenal health. Eating a balanced diet, managing stress, exercising regularly, and getting enough sleep all support hormone balance. If your tumor produces aldosterone, reducing sodium intake may help control blood pressure. Work with your healthcare team to develop a plan that fits your specific situation.

Excess cortisol, called Cushing syndrome, causes weight gain in the face and trunk, purple stretch marks, easy bruising, and muscle weakness. You may also experience high blood pressure, diabetes, mood changes, and thinning skin. Women may develop irregular periods and excess facial hair. These symptoms develop gradually over months or years.

Small, benign tumors typically need imaging every 6 to 12 months for the first few years. If the tumor remains stable, monitoring may be extended to every 1 to 2 years. Hormone levels may also be checked annually. Your doctor will create a monitoring schedule based on tumor size, appearance, and whether it produces hormones.

Chronic stress does not directly cause adrenal tumors to develop. However, long-term stress can affect adrenal function and hormone production. Most adrenal tumors occur randomly or due to genetic factors rather than lifestyle causes. Managing stress is still important for overall health and hormone balance, especially if you have an existing adrenal condition.

A pheochromocytoma is a rare adrenal tumor that produces excess adrenaline and noradrenaline. It causes episodes of severe high blood pressure, rapid heartbeat, heavy sweating, headaches, and anxiety. These episodes can be triggered by stress, certain foods, or physical activity. Pheochromocytomas require surgical removal because they can cause dangerous blood pressure spikes and heart problems.