Rare diseases · Sign or symptom

Multicystic kidney dysplasia

HP:0000003

What it means

Multicystic dysplasia of the kidney is characterized by multiple cysts of varying size in the kidney and the absence of a normal pelvicaliceal system. The condition is associated with ureteral or ureteropelvic atresia, and the affected kidney is nonfunctional.

Multicystic kidney dysplasia is the result of abnormal fetal renal development in which the affected kidney is replaced by multiple cysts and has little or no residual function. The vast majority of multicystic kidneys are unilateral. Multicystic kidney can be diagnosed on prenatal ultrasound.

Rare diseases that can present with this57

The range is how often this sign appears among people diagnosed with each disease — it is not a probability of having any of them. Many of these signs also occur in common, non-rare conditions. A sign on this page is a conversation to have with a clinician, not a conclusion.

Part of the broader category

Also called: Multicystic dysplastic kidney · Multicystic kidneys · Multicystic renal dysplasia

Multicystic kidney dysplasia

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This page uses the Human Phenotype Ontology (2026-06-23) — Human Phenotype Ontology Consortium, hpo.jax.org. Disease associations from Orphanet (INSERM), CC BY 4.0. Content is educational and is not medical advice.