isolated unilateral hemispheric cerebellar hypoplasia https://github.com/monarch-initiative/mondo/issues/6752 https://github.com/monarch-initiative/mondo/issues/6876 https://www.malacards.org/card/isolated_unilateral_hemispheric_cerebellar_hypoplasia MONDO:0017112 icd11.foundation:1960392411 Isolated unilateral hemispheric cerebellar hypoplasia is a rare, non-syndromic cerebellar malformation characterized by loss of volume in the right or left cerebellar hemisphere, with intact vermis and no other neurological anomalies (i.e. normal cerebral hemispheres, fourth ventricle, pons, medulla and midbrain). Patients may be asymptomatic or may present developmental and speech delay, hypotonia, abnormal ocular movements, persistent headaches and/or peripheral vertigo and ataxia. Neurological examination is otherwise normal. SCTID:766934006 UMLS:C4707885 Orphanet:269218 MEDGEN:1638819 GARD:0020995 central nervous system malformation