Omphalomesenteric Cyst: Causes, Symptoms, and Treatment
Medically reviewed by Harsha Moole, MD, Internal Medicine. Last reviewed: October 2, 2026.
What kind of doctor treats Omphalomesenteric Cyst?
A primary care doctor is often the first stop and can order imaging and refer the patient to a specialist. A surgeon performs the removal: a pediatric surgeon for children and a general surgeon for adults. 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
An omphalomesenteric cyst is a rare pocket of tissue in the belly. It comes from the omphalomesenteric duct, a tube connecting a growing baby to the yolk sac. This tube normally closes before birth; when part of it stays open, fluid can collect and form a cyst. These cysts are usually found in babies and children, but adults can have them too.
Symptoms
Many cysts cause no symptoms. When symptoms happen, they often include a lump or swelling near the belly button that may look red or feel warm. An infected cyst can cause fever and drainage of fluid or pus. The cyst can also cause the intestine to twist or become blocked, which needs medical care right away.
Causes and who gets it
The cause is a problem in how the body forms before birth. The duct normally closes by about the seventh week of pregnancy; if part of it stays open, a cyst can form. The condition is rare, usually found in infants and children, and affects boys more often than girls.
How doctors diagnose it
Doctors often start with a physical exam. An ultrasound or CT scan can confirm the problem. Sometimes these cysts are found by accident during imaging for another reason.
Treatment
Treatment usually involves surgery to remove the cyst and any tissue connecting it to the intestine or belly wall. This prevents future problems such as infection, bowel twisting, or blockage. Some symptom-free cysts may be watched, but many doctors still recommend removal. Infected cysts may be treated with antibiotics.
When to see a doctor
See a doctor for a lump, swelling, redness, or drainage near the belly button. Get emergency care for severe belly pain, vomiting, fever, or a hard, swollen belly, which can signal an infection or blocked intestine.
How a direct primary care or concierge doctor fits in
A direct primary care doctor can be a good first stop. This kind of doctor charges a flat monthly fee instead of billing insurance; a concierge doctor usually charges more and often works alongside insurance. They often have longer appointments, can order imaging, and will refer the patient to a surgeon if needed.
Common questions
Is an omphalomesenteric cyst cancer?
No, it is not cancer. It is a leftover piece of tissue from before birth. Very rare tumor cases have been reported. The cyst itself is benign, meaning noncancerous.
Can adults have this cyst?
Yes. Most cases are found in babies and children. Some cysts go unnoticed for years and are found in adults during imaging tests for other problems.
Does the cyst always need surgery?
Not always, but surgery is often recommended. Doctors worry about infection, bowel blockage, or twisting of the intestine later in life. The best plan depends on the person and the size and location of the cyst.
Can it come back after surgery?
It is uncommon for the cyst to return when it is fully removed. Follow-up visits with the doctor help make sure the area heals well.
Sources
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.
