Regarding Dandy-Walker syndrome, all
are seen except-
a) Hydrocephalus
b) Archnoid cyst
c) Posterior fossa cyst
d) Cerebellar vermis deficiency
Correct Answer - B
Ans. is ‘b’ i.e., Arachnoid cyst
Dandy-walker malformation
o The Dandy-Walker malformation consists of a cystic expansion of
the 4th ventricle in the posterior fossa and midline cerebellar
hypoplasia.
o There is : ?
o Hydrocephalus (90% of cases)
o Agenesis of the cerebellar vermis and corpus callosum.
o Rapid increase in head size with prominent occiput.