Ectopic Cushing Syndrome: Causes, Symptoms, and Treatment
Medically reviewed by Harsha Moole, MD, Internal Medicine. Last reviewed: October 2, 2026.
What kind of doctor treats Ectopic Cushing Syndrome?
A primary care doctor often starts the testing and then refers the patient to specialists. An endocrinologist, a doctor who treats hormone problems, usually leads the care, and a surgeon removes the tumor when possible. A direct primary care or concierge doctor can be a first stop for an evaluation and can refer you to a specialist when needed.
What it is
Ectopic Cushing syndrome is a rare condition in which a tumor in the body makes too much ACTH, or adrenocorticotropic hormone. ACTH tells the adrenal glands on top of the kidneys to make the stress hormone cortisol. When a tumor outside the pituitary gland makes ACTH on its own, the body ends up with too much cortisol, causing a wide range of symptoms called Cushing syndrome.
Symptoms
Too much cortisol changes the body in many ways. Common signs include weight gain around the middle and upper back, a round and puffy face, and a fatty bump between the shoulders. Skin may become thin and bruise easily, and purple stretch marks can appear on the belly. Some people feel tired, weak, or moody, or develop high blood pressure or high blood sugar.
Causes and who gets it
Ectopic Cushing syndrome happens when a tumor outside the pituitary gland makes ACTH. These tumors are most often found in the lungs, but they can also grow in the pancreas, thymus, thyroid, or other organs. The condition is rare and usually seen in adults.
How doctors diagnose it
Doctors first run blood, urine, or saliva tests to check whether cortisol levels are too high. If they are, more tests show where the extra ACTH is coming from. Scans such as CT or MRI help find the tumor.
Treatment
The main treatment is surgery to remove the tumor making the extra ACTH. If surgery is not possible, medicines can block the body from making too much cortisol. Doctors may also treat the adrenal glands or use radiation therapy.
When to see a doctor
See a doctor if you notice weight gain, a round face, easy bruising, purple stretch marks, or muscle weakness that does not go away. Sudden severe symptoms, such as very high blood sugar or blood pressure, need prompt medical attention.
How a direct primary care or concierge doctor fits in
A direct primary care doctor charges a flat monthly fee instead of billing insurance for visits, while a concierge doctor usually charges more and often works alongside insurance. Either one can spend extra time on hard-to-pin-down symptoms and coordinate care among specialists. They typically refer patients to an endocrinologist, since this rare condition needs specialist care.
Common questions
Is ectopic Cushing syndrome cancer?
Not always. Some tumors that make extra ACTH are benign, meaning they are not cancer, while others are cancerous. Doctors run tests to learn what kind of tumor a patient has.
Can it be cured?
Many people improve a lot when the tumor is removed, but results differ. Some tumors cannot be removed; in those cases medicines help control the cortisol. Long-term follow-up is common.
How is it different from regular Cushing syndrome?
Regular Cushing syndrome is the name for any condition that causes too much cortisol. Ectopic Cushing syndrome is one specific cause, in which a tumor outside the pituitary gland makes the extra ACTH.
Do the symptoms go away after treatment?
Many symptoms, such as weight gain and bruising, often improve over months after cortisol levels drop. Some changes may take a year or more to fade.
Sources
- NIH Genetic and Rare Diseases Information Center - Ectopic Cushing syndrome
- MedlinePlus - Ectopic Cushing syndrome
Medical Disclaimer
This content is for general educational and informational purposes only and is not medical advice. It is not a substitute for professional medical advice, diagnosis, or treatment, and reading it does not create a doctor-patient relationship. Always seek the advice of your physician or another qualified health provider with any questions about a medical condition, and never disregard or delay seeking professional advice because of something you read here. If you think you may have a medical emergency, call 911 (or your local emergency number) immediately.
