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Isolated bilateral hemispheric cerebellar hypoplasia is a rare cerebellar malformation characterized by hypoplasia of both cerebellar hemispheres with no other cerebellar/cerebral anomaly or other associated clinical feature. Affected patients present with mild hypotonia with motor delay, mild cognitive impairment, language delay, visuospatial and verbal memory deficits, dysdiadochokinesis, intentional tremor, and possible presence of emotional fragility and mild depression.
Biomarker and diagnostic research for isolated bilateral hemispheric cerebellar hypoplasia has been reported in the published literature.
Estimated prevalence: Unknown (Unknown prevalence).
No clinical trials have been registered for isolated bilateral hemispheric cerebellar hypoplasia.
3 publications have been identified in PubMed for isolated bilateral hemispheric cerebellar hypoplasia. Research spans Diagnostic / Biomarker (33%), Review / Meta-Analysis (33%), and Epidemiology / Natural History (33%).
Guo C (2025). [PMID: 40533793](https://pubmed.ncbi.nlm.nih.gov/40533793/). *Eur J Med Res*. [Diagnostic / Biomarker]
Muehlbacher T (2025). [PMID: 39885037](https://pubmed.ncbi.nlm.nih.gov/39885037/). *Cerebellum*. [Review / Meta-Analysis]
Pasca L (2025). [PMID: 39406511](https://pubmed.ncbi.nlm.nih.gov/39406511/). *AJNR Am J Neuroradiol*. [Epidemiology / Natural History]
Data assembled from 3 of 12 sources · Last updated Sep 20, 2026, 11:13 AM UTC
European rare disease database
Genetic and Rare Diseases Info Center