Caring for someone with this diagnosis? Eleplan keeps diagnoses, medications, documents and every specialist in one plan.
Start free with EleplanRenal hypoplasia
ORPHA:93101Morphological anomaly
What it is
A congenital renal malformation characterized by abnormally small kidney(s) (kidney volume below two standard deviations of that of age-matched normal individuals or a combined kidney volume of less than half of what is normal for the patient's age) with normal corticomedullary differentiation and reduced number of nephrons.
Key facts
- Age of onset
- All ages
- Inheritance
- Autosomal dominant, Not applicable
- Classified as
- Morphological anomaly
Signs and symptoms
Common30–79%
7Sometimes5–29%
13- Abnormality of the ureter
- Dehydration
- Hydronephrosis
- Hypertension
- Pelvic kidney
- Polydipsia
- Premature birth
- Proteinuria
and 5 more in this range
These ranges are how often a sign appears across everyone diagnosed, not a prediction for one person — most people have some of these and not others. Orphanet also records findings that are specifically absent in this disease; those are in the data but not listed here.
Genes reported in subtypes
Orphanet records these genes on 1 more specific entry under this disorder, not on this entry itself:
A well-studied disease is usually split into subtypes, and the gene is curated on whichever one the evidence belongs to. Open a subtype to see which gene goes with it.
ICD-10 codes
ICD-10 has no distinct code for most rare diseases, so many are filed under the nearest available one. A shared code identifies the group, not this disease — the ORPHAcode above is what identifies it.
Cross-references
Orphadata Science: Free access data from Orphanet. © INSERM 1999. Data version 2026-06-23. Available under CC BY 4.0. This is a reference, not medical advice.
Powered by Eleplan
A rare diagnosis is just the start. Eleplan keeps the whole care plan in one place.
Diagnoses, medications, documents, appointments, and the whole care team — organized and always in sync, so you are not retelling the same story to every new specialist. With Ellie, your AI care assistant, on top of it. Free to start.