The prevalence of DWM is estimated at between 1 in 25,000 to 1 in 50,000. DWM is the cause of around 4.3% of cases of congenital hydrocephalus and 2.5% of all cases of hydrocephalus. A 2017 review found that most patients (65%) were diagnosed with either<unk> " or<unk><unk><unk>  syndrome", while 20% were diagnosed with<unk><unk><unk>  variant" and 1.1% with "mega cisterna magna".
Dandy–Walker malformation
Glial tumor
Subdural hygroma
Schizencephaly
Chiari malformation
Hemimegalencephaly
Subependymoma
Hydranencephaly