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Living with Bilateral multicystic dysplastic kidney

A rare condition in which both kidneys are enlarged with many cysts and do not work.

Understanding Bilateral multicystic dysplastic kidney

Bilateral multicystic dysplastic kidney is a rare form of kidney and urinary tract difference present from birth.

In this condition both kidneys are large and swollen with many separate cysts. The kidneys do not work. It can be noticed during pregnancy and in newborns.

Signs & symptoms

GARD doesn't list specific symptoms for this condition yet.

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 and kidney specialists.

  3. Consider genetic testing

    Changes in HNF1B are linked to this condition. Genetic testing and counseling can help confirm a diagnosis and explain what it means for your family.

Care & treatment

Care team
Genetic specialists (geneticists); Kidney specialists (nephrologists)
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
Can HNF1B gene testing explain the cause?
Which specialists (kidney, newborn care) should be involved?
Should we have genetic counseling for future pregnancies?

Quick facts

Symptoms usually startduring Pregnancy and as a Newborn
InheritanceAutosomal Dominant
GenesHNF1B

Changes in the HNF1B gene cause this condition. It is autosomal dominant, so one changed copy of the gene is enough.

GeneticKidney

Also known as: bilateral mcdk; bilateral multicystic renal dysplasia; multicystic renal dysplasia, bilateral

Patient organizations

Source: NIH GARD · Bilateral multicystic dysplastic kidneyGARD ID 9517 · 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 Bilateral multicystic dysplastic kidney.

Explore the Bilateral multicystic dysplastic kidney blog

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Explore actively recruiting Bilateral multicystic dysplastic kidney studies with HealthSpark.

HealthSpark

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