Lymphangiectasis: Causes, Symptoms, and Treatment
Medically reviewed by Harsha Moole, MD, Internal Medicine. Last reviewed: October 2, 2026.
What kind of doctor treats Lymphangiectasis?
A primary care doctor is often the first doctor a person sees and can order early tests. Many people also see a gastroenterologist, a specialist in the digestive system. A dietitian or genetic specialist may help depending on the cause.
What is lymphangiectasis?
Lymphangiectasis is a condition where the lymph vessels become widened and swollen. Lymph vessels are thin tubes that carry lymph, a clear fluid, through the body. When this happens in the intestines, the body has trouble absorbing fat and protein from food.
Symptoms
Symptoms depend on which part of the body is affected. When the intestines are involved, protein-losing enteropathy is common, causing fluid to build up and swell the legs, belly, or other areas. Other signs include long-lasting diarrhea, nausea, vomiting, belly pain, and weight loss. Children may grow more slowly.
Causes and who gets it
Lymphangiectasis can be primary, meaning a person is born with it because the lymph vessels did not form correctly, or secondary, meaning something else caused it. The primary form is rare and often runs in families. Secondary causes include swollen lymph nodes, tumors, Crohn's disease, surgery, radiation, and infections.
How doctors diagnose it
Doctors start with a physical exam, health history, and blood tests that can show low protein and immune cells. A stool test can check for gut protein loss. An endoscopy uses a thin tube with a camera to view the intestines, and ultrasound or MRI scans can show swollen lymph vessels elsewhere.
Treatment
Treatment depends on the cause and severity. Many people improve with a low-fat diet that includes medium-chain triglycerides, special fats that are easier to absorb. Doctors may also prescribe supplements to replace lost protein and vitamins.
When to see a doctor
Anyone with lasting swelling in the legs or belly, long-term diarrhea, or unexplained weight loss should see a doctor, as should children who are not growing as expected. Early evaluation can prevent problems such as poor nutrition.
How a direct primary care or concierge doctor fits in
A direct primary care doctor charges a flat monthly fee instead of billing insurance; a concierge doctor usually charges more and often works alongside insurance. Either type can spend extra time on diet planning and follow-up, and will refer to a specialist for severe cases.
Common questions
Is lymphangiectasis curable?
There is no single cure for most forms of the condition. Many people manage it well with diet changes and treatment of any underlying cause. How well someone does depends on the cause and severity.
Is lymphangiectasis the same as lymphedema?
No. Lymphedema is swelling caused by a buildup of lymph fluid, usually in an arm or leg. Lymphangiectasis is the widening of the lymph vessels themselves. Both involve the lymph system and can sometimes appear together.
Can adults get lymphangiectasis?
Yes. While some people are born with it, adults can develop the secondary form. This can happen after surgery, radiation, infection, or diseases that block the lymph vessels.
What foods should be avoided?
Many people with the intestinal form are advised to limit regular fats. They can use special fats called medium-chain triglycerides instead. The right plan varies by person. Patients should work with a doctor or dietitian rather than changing their diet on their own.
Sources
- NIH Genetic and Rare Diseases Information Center - Intestinal lymphangiectasia
- MedlinePlus - Lymphatic Diseases
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.
