Chiari malformation type II
Arnold-Chiari malformation type II is a rare, central nervous system malformation characterized by caudal displacement of the cerebellum, pons, medulla and fourth ventricle through the foramen magnum into the spinal canal, and is typically associated with myelomeningocele. Variable other central nervous system abnormalities might be present (partial or complete agenesis of the corpus callosum, a small fourth ventricle, obstructive hydrocephalus, falx and tentorium defects, and polygyria). Symptoms include hypotonia, apnea with cyanosis, dysphagia, opisthotonus, nystagmus, spasticity, ataxia, and occipital headache.
MONDO:0000115
Chiari malformation
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MONDO:0017069
spina bifida cystica
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MONDO:0100545
hereditary neurological disease
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Arnold Chiari malformation type II
related
Arnold-Chiari malformation type 2
exact
Arnold-Chiari malformation type II
exact
Chiari malformation type 2
exact
Chiari malformation type II
exact
Chiari type II malformation
related