Cystic Adenomatoid Malformation of Lung: Causes, Symptoms, and Treatment
Medically reviewed by Harsha Moole, MD, Internal Medicine. Last reviewed: October 2, 2026.
What kind of doctor treats Cystic Adenomatoid Malformation of Lung?
A pulmonologist usually helps manage this condition, often a pediatric pulmonologist for children. Chest surgeons perform any needed operations, and a maternal-fetal medicine doctor may follow the baby before birth. 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
Cystic adenomatoid malformation of the lung is a rare problem that develops before a baby is born, when part of the lung does not form the way it should. Instead of normal lung tissue, a patch grows into fluid-filled sacs called cysts. Doctors now often call it congenital pulmonary airway malformation.
Symptoms
Babies with large malformations may breathe fast, grunt, or turn bluish soon after birth, and may struggle to feed. Smaller malformations may cause no trouble for years.
Older children and adults may have a lasting cough, repeated chest infections, wheezing, or shortness of breath; some learn of the malformation by accident on a chest scan.
Causes and who gets it
Doctors do not fully know why this happens. It appears to come from a mistake in lung development during early pregnancy and is not caused by anything the parents did.
The condition is rare, affects boys and girls similarly, and usually occurs with no family history; the chance of recurrence is considered low.
How doctors diagnose it
Many cases are spotted before birth on a routine pregnancy ultrasound; doctors may then order fetal MRI. After birth, a chest X-ray and CT scan help decide whether treatment is needed and when.
Treatment
Treatment depends on the size of the malformation and the problems it causes. Small, symptom-free malformations may only need regular monitoring with scans.
Large or troublesome malformations are usually treated with surgery to remove the affected part of the lung. Severe cases may need supportive care in a newborn intensive care unit.
When to see a doctor
Call a doctor if a child has ongoing coughing, repeated chest infections, or shortness of breath. Trouble breathing, bluish lips, or coughing up blood needs attention right away. Families with a prenatal diagnosis are usually connected with a care team before birth.
How a direct primary care or concierge doctor fits in
A direct primary care doctor charges a flat monthly fee instead of billing insurance, while a concierge doctor usually charges more and often works alongside insurance. Either can handle routine monitoring and coordinate scans, referring to a pulmonologist or chest surgeon when needed.
Common questions
Can this condition go away on its own?
Some small malformations shrink before birth or stay stable without causing problems. Others keep growing or cause infections. Doctors decide between watching and surgery based on scans and symptoms.
Is it cancer?
No, it is not cancer. It is a birth defect in lung development. Very rare tumor-like changes have been reported in long-standing cases. This is one reason doctors recommend follow-up.
Can a person live a normal life with one removed lung section?
The lung has several sections, and the remaining healthy tissue usually takes over the work. Many people breathe comfortably after surgery, though results differ from person to person.
Will my next baby have it too?
Most cases happen by chance, with no family history. The chance of it recurring in a future pregnancy is considered low. A genetic counselor can give more specific information for a family.
Sources
- MedlinePlus - Birth Defects
- National Organization for Rare Disorders (NORD) - congenital pulmonary airway malformation - National Organization for Rare Disorders
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.
