Congenital Plasminogen Deficiency: Causes, Symptoms, and Treatment
Medically reviewed by Harsha Moole, MD, Internal Medicine. Last reviewed: October 2, 2026.
What kind of doctor treats Congenital Plasminogen Deficiency?
A primary care doctor often notices the pattern first. Because the growths can affect the eyes, ears, and airways, patients usually also see an ophthalmologist, an otolaryngologist, and a hematologist, who work together on the care plan. 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 is congenital plasminogen deficiency?
Congenital plasminogen deficiency is a rare inherited condition in which the body lacks plasminogen, a protein that dissolves blood clots after they heal a wound. Clots then stay in place too long and grow into thick, woody growths, most often on the lining of the eyes, ears, nose, or airway.
Plasminogen, made by the liver, is turned into plasmin, an enzyme that breaks down clots. Without enough of it, the body builds clots but cannot clear them away, causing swollen, inflamed growths on moist surfaces. Doctors call this type 1 plasminogen deficiency.
Symptoms
Symptoms usually appear in childhood, though some people are diagnosed later. Growths tend to return even after treatment.
Common signs include the following.
- Swollen, red growths on the conjunctiva, the clear lining of the eye.
- Similar growths in the ear canal, nose, sinuses, throat, or windpipe, affecting hearing or breathing.
- Growths on the gums, vocal cords, or reproductive tract.
- Recurring sinus or ear infections, or a persistent cough.
Causes and who gets it
The condition is genetic, passed down through families. A child must inherit one changed copy of the PLG gene from each parent; parents carrying only one copy usually have no symptoms.
How doctors diagnose it
Doctors start with a medical history and exam, looking for recurring growths on moist surfaces. A blood test measures plasminogen level and activity, and genetic testing can confirm the diagnosis. A biopsy may rule out other causes.
Treatment
Treatment focuses on replacing the missing protein and managing growths. A plasma-derived medicine supplies working plasminogen through a vein. Surgery can remove growths that block vision, breathing, or hearing, but they often return without treatment.
When to see a doctor
Anyone with repeated growths on the eye, ear, nose, throat, or airway should see a doctor, especially if they return after removal. Trouble breathing, sudden vision changes, or a blocked airway needs prompt 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; a concierge doctor usually charges more and often works alongside insurance. Either can be a steady home base, offering longer appointments, easier access, and routine follow-up, while referring to specialists when needed.
Common questions
Is congenital plasminogen deficiency dangerous?
It is rarely life threatening. However, growths in the airway can cause serious breathing problems and need treatment. Early diagnosis makes it easier to manage symptoms over time.
Can it be cured?
There is no cure because the condition is genetic. Treatment with protein replacement can usually control the growths. Results differ from person to person, and the growths can return.
Should family members be tested?
Because the condition is inherited, siblings and children of a person with the condition may carry the changed gene. A genetic counselor can explain testing options for family members.
Do the growths mean cancer?
No. The growths are made of inflamed tissue and trapped clot material, not cancer. Doctors may still take a small sample to be sure of the diagnosis.
Sources
- NIH Genetic and Rare Diseases Information Center - Congenital plasminogen activator inhibitor type 1 deficiency
- MedlinePlus - Congenital plasminogen deficiency
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.
