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ORPHA:93108Morphological anomaly
Also called Kidney dysplasia
What it is
A rare renal malformation in which the kidney(s) are present but their development is abnormal, leading to malformation of histologic architecture of the kidney and presence of embryological tissue such as mesenchymal collarettes or other forms of undifferentiated and metaplastic tissues. Renal dysplasia can be unilateral or bilateral, segmental, and of variable severity.
Key facts
- Prevalence
- 1-5 / 10 000 (at birth, Europe)
- Age of onset
- All ages, Antenatal
- Inheritance
- Autosomal dominant, Not applicable
- Classified as
- Morphological anomaly
Prevalence figures describe populations, not individuals, and are often estimates from a single study. Where the figure is an incidence or a birth prevalence, it says so.
Signs and symptoms
Common30–79%
7Sometimes5–29%
19- Abdominal mass
- Abdominal pain
- Enlarged kidney
- Flank pain
- Hydronephrosis
- Hydroureter
- Hypertension
- Moderate proteinuria
and 11 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 this gene on 2 more specific entries 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.
Related health topics
Reached through the ICD-10 categories this disease is filed under, so these describe the broader group rather than this disease specifically.
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.
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