17769 Adrenal Adenoma

Overview

An adrenal adenoma is a non-cancerous (benign) growth that develops on one or both of your adrenal glands. These are small triangle-shaped glands that sit on top of each kidney. The adenoma itself usually does not cause harm, but in some cases it may make extra hormones that can lead to health problems.

Yes. Adrenal adenomas are quite common, especially as people get older. About 1 in 20 to 1 in 10 people may have one.

It can affect anyone, but it is more commonly found in people over 40. Women are slightly more likely to have one than men. Some rare inherited conditions can increase the chance of developing an adrenal adenoma.

Symptoms

Common symptoms

• No symptoms at all – most people never know they have it.
• High blood pressure that may be hard to control.
• Fatigue or weakness.
• Muscle cramps or a feeling of tingling.
• Increased thirst or needing to urinate often.
• Changes in body shape, such as rounder face or extra fat around the belly.

Symptoms in children

• Early signs of puberty (before age 8–9)
• Excessive body hair or acne
• High blood pressure

Symptoms in older adults

• Often no symptoms – the adenoma is usually found by chance
• May cause or worsen high blood pressure, diabetes, or bone thinning
• Possible muscle weakness or mood changes

Causes

Main causes

• The exact cause of an adrenal adenoma is usually not known.
• It seems to happen when cells in the adrenal gland grow out of control, but these cells remain non-cancerous.
• In rare cases, certain inherited genetic conditions can make a person more likely to develop an adrenal adenoma.

Risk factors

• Age over 40
• Being female
• Having a family history of adrenal tumors or related genetic conditions
• Having conditions like type 2 diabetes or obesity – though these are more strongly linked to hormone-producing adenomas than to the adenoma itself

When to see a doctor

See a doctor urgently if:

• If you notice sudden severe pain, chest pain, or fainting, call your local emergency number right away.
• If you have symptoms of a hormone surge like racing heartbeat, severe headaches, and sweating – this needs urgent medical attention.

Book a routine appointment if:

• If you have been told you have an adrenal adenoma and have not had a follow-up appointment.
• If you have new symptoms like high blood pressure, weight gain, or feeling very tired.
• If you have a family history of adrenal tumors or inherited conditions that affect the adrenal glands.

Diagnosis

Adrenal adenomas are most often found when you have an imaging test – like a CT scan or MRI – for an unrelated reason. Once it is seen, your doctor may do more tests to check whether the adenoma is producing extra hormones and whether it needs treatment.

Tests that may be done

• Blood tests to check hormone levels
• Urine tests (collected over 24 hours) to measure hormones
• Imaging tests like a CT scan or MRI to look at the size and appearance of the adenoma
• Sometimes a special procedure called adrenal vein sampling – this checks which gland is making too much hormone

What to expect at your appointment

If a growth is found, your doctor will usually want to repeat blood and urine tests and possibly another scan after a few months to see whether the adenoma is changing. This is a standard approach, and most people do not need any invasive treatment.

Treatment

Treatment for an adrenal adenoma depends on three things: its size, whether it makes extra hormones, and your own health. If the adenoma is small and non-functioning (does not make excess hormones), it is usually safe to leave it alone and just monitor it at regular intervals. If it is large, or if it is producing hormones that cause health problems, your doctor may recommend medication to control the effects or surgery to remove it.

Self-care at home

• Attend all recommended follow-up appointments – even if you feel fine.
• Keep track of your blood pressure at home if your doctor advises it, and report any high readings.
• Stay active and follow a healthy diet to help keep your heart and bones strong.
• Let your doctor know if you notice any new symptoms like persistent headache, palpitations, or weight changes.

Medical treatments

If the adenoma is making too much hormone, your doctor may prescribe medications that help block or counterbalance the effects of those hormones. For example, if the adenoma raises your blood pressure, there are medicines to lower it. If the adenoma affects blood sugar, doctors will manage that too. The specific medicine depends on your individual situation – your doctor will choose the best option for you.

When is surgery considered?

Surgery may be recommended if the adenoma is large (typically above 4 cm in size), if it is causing a significant hormone excess that cannot be managed by medication, or if there are signs that it might be growing rapidly. The operation, which is often laparoscopic (done through small cuts), removes the adenoma and, sometimes, the whole adrenal gland. The other adrenal gland can usually take over the hormone production.

Living with this condition

For most people, living with an adrenal adenoma is very simple – you usually cannot feel it, and it does not affect your daily life. The main task is to keep your regular appointments with your healthcare provider and follow any recommendations for tests. It's a bit like watching a mole on your skin – you keep an eye on it, but you don't let it stop you from living your life.

Lifestyle tips

• Eat a balanced diet with plenty of fruits, vegetables, and whole grains.
• If you have high blood pressure, try to limit salt and processed foods.
• Stay physically active – even a 30-minute walk each day helps.
• Aim for good sleep and manage stress in ways that work for you, such as talking with friends, meditation, or hobbies.
• Do not smoke, and limit alcohol intake.

Diet and exercise

There is no special diet that can cure or prevent an adrenal adenoma. However, if the adenoma raises your blood pressure or blood sugar, a healthy, balanced diet and regular exercise can make a real difference in keeping these numbers in a safe range. Your doctor or a dietitian can give you personalised advice based on your test results.

Mental health and emotional wellbeing

Hearing that you have a growth on your adrenal gland can cause anxiety, even when it is benign. It is normal to feel uneasy or to worry about what it might mean. Remember that having an adrenal adenoma is very common and usually not dangerous. If you feel overwhelmed, talk to your healthcare team – they can give you clear information and reassurance. You can also ask to speak to a counsellor or psychologist if you need more support.

Prevention

No, there is no known way to prevent an adrenal adenoma. It is not linked to your lifestyle choices, and there are no foods or activities that can stop it from developing. The best thing you can do is stay on top of your overall health and go to regular checkups so that any findings – like an adrenal adenoma – are managed properly.

Vaccines

There is no vaccine that prevents adrenal adenomas. It is still a good idea to stay up to date with your usual immunisations, as staying healthy in other ways helps your body cope with any illness.

Screening programmes

There is no routine screening test for adrenal adenomas in the general public. They are usually found incidentally when you have an imaging test for another reason. If you have a known inherited risk (like a genetic condition that increases your chance of adrenal tumors), your doctor may recommend periodic imaging or hormone tests – but that is only in special situations.

Complications

If left untreated

• If a hormone-producing adenoma is not treated, it can cause persistent high blood pressure, which raises the risk of heart attack and stroke.
• It can lead to uncontrolled blood sugar (diabetes).
• It may cause bone thinning (osteoporosis) and a higher risk of fractures.
• In rare cases, a benign adenoma can grow large and press on nearby organs or, very rarely, turn into a cancer (adrenal carcinoma).

Long-term outlook

The outlook for almost everyone with an adrenal adenoma is excellent. For the majority of people, it remains harmless and never causes any symptoms. Even if the adenoma does cause hormone problems, treatment – whether medication or surgery – is very successful in managing the condition. With regular follow-ups and a healthy lifestyle, most people live full and active lives with no limitations.

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