unilateral polymicrogyria
MONDO:0017092Mondo
Findings
No curated finding names unilateral polymicrogyria yet. Everything below is reference data from Mondo, HPO and GenCC, not evidence about what affects it.
Definition
Unilateral polymicrogyria is a cerebral cortical malformation characterized by unilateral excessive cortical folding and abnormal cortical layering. It comprises two sub-types depending on the areas affected: unilateral hemispheric and focal polymicrogyria.
Definition from the Mondo Disease Ontology (MONDO:0017092), read 2026-09-29. CC BY 4.0.
Features
37 features
What the disease is reported to present with, and how often among people who have it — never how often a feature means the disease. HPO, annotations 2026-09-02.
- Cortical dysplasiaHPOHP:0002539
- Frequent (30% to 79% of cases)
- Generalized tonic seizureHPOHP:0010818
- Frequent (30% to 79% of cases)
- HemiparesisHPOHP:0001269
- Frequent (30% to 79% of cases)
- Intellectual disabilityHPOHP:0001249
- Frequent (30% to 79% of cases)
- Poor fine motor coordinationHPOHP:0007010
- Frequent (30% to 79% of cases)
- Pseudobulbar paralysisHPOHP:0007024
- Frequent (30% to 79% of cases)
- SeizureHPOHP:0001250
- Frequent (30% to 79% of cases)
- Spastic tetraplegiaHPOHP:0002510
- Frequent (30% to 79% of cases)
- Abnormal facial shapeHPOHP:0001999
- Occasional (5% to 29% of cases)
- Abnormal posturingHPOHP:0002533
- Occasional (5% to 29% of cases)
- ApneaHPOHP:0002104
- Occasional (5% to 29% of cases)
- Appendicular hypotoniaHPOHP:0012389
- Occasional (5% to 29% of cases)
Show the remaining 25
- Axial hypotoniaHPOHP:0008936
- Occasional (5% to 29% of cases)
- CyanosisHPOHP:0000961
- Occasional (5% to 29% of cases)
- Delayed speech and language developmentHPOHP:0000750
- Occasional (5% to 29% of cases)
- EpistaxisHPOHP:0000421
- Occasional (5% to 29% of cases)
- EsotropiaHPOHP:0000565
- Occasional (5% to 29% of cases)
- Focal impaired awareness seizureHPOHP:0002384
- Occasional (5% to 29% of cases)
Where it sits
- A kind of
- Narrower terms (2)