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Living with Atresia of urethra

A rare condition seen before birth in which the tube that carries urine out of the bladder is closed or did not form.

Understanding Atresia of urethra

Atresia of the urethra is a rare condition in which the urethra, the tube that carries urine from the bladder, is closed or did not form.

It causes a blockage in the lower urinary tract that can be seen before birth. The bladder becomes very large (megacystis), amniotic fluid is low, and the kidneys can be affected. Urine can back up to the kidneys and ureters. It is seen during pregnancy and in newborns.

Signs & symptoms

Symptoms vary from person to person. GARD lists these among the most common:

  • Very large bladder (megacystis)
  • Low amniotic fluid (oligohydramnios)
  • Swollen kidneys from backed-up urine (hydronephrosis)
  • Frequent urinary tract infections
  • Urine flowing backward toward the kidneys (reflux)
  • Kidney problems

Not everyone has every symptom. GARD's list comes from the Human Phenotype Ontology.

Diagnosis

  1. Talk with your doctor

    Share the symptoms you've noticed, when they started and your family health history. Notes and photos can help.

  2. See a specialist

    Specialists who may be involved include genetic specialists, kidney specialists and urinary and male reproductive system specialists.

  3. Ask which tests can help

    Your care team will decide which exams and tests can confirm the diagnosis.

Care & treatment

Care team
Genetic specialists (geneticists); Kidney specialists (nephrologists); Urinary and male reproductive system specialists (urologists)
Expert care
Ask about multidisciplinary care centers for rare conditions
Treatment
GARD doesn't list specific treatments for this condition. Your care team will tailor care to your symptoms.
Research
Clinical trials and observational studies may be options. See the research section below.

General information, not medical advice. Your care team makes the decisions.

Everyday life

Living with a rare condition is easier with support.

  • Connect with National Kidney Foundation and other patient organizations
  • Keep notes on symptoms, changes and questions for appointments
  • Ask about patient registries that help research
  • Look into financial aid and travel resources for care visits
Bring these questions to your next doctor visit
Which specialists, such as a urologist and kidney doctor, should be involved?
How is kidney function monitored?
What procedures could help urine drain?

Quick facts

Symptoms usually startduring Pregnancy and as a Newborn

GARD says changes in genes (also called variants) cause this condition but doesn't list a specific gene or inheritance pattern.

GeneticKidneyUrinary and Reproductive

Also known as: absent urethral opening; atresia of urethra (disease); urethral atresia; urethral opening absent

Patient organizations

Source: NIH GARD · Atresia of urethraGARD ID 18678 · GARD page updated September 2026 · Plain-language summary by Know Rare; editorial review pending. General information, not medical advice.

You are more than your diagnosis

Perspectives from people navigating life with Atresia of urethra.

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Explore research for Atresia of urethra

Explore actively recruiting Atresia of urethra studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Atresia of urethra with HealthSpark. Share your city to explore research near you.

  • Recruiting studies from ClinicalTrials.gov
  • Share your city to look for research near you
  • Eligibility is confirmed by the study team

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Powered by HealthSpark, our AI chat helper · Study information from ClinicalTrials.gov · Eligibility is confirmed by the study team.

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