A radioanatomical study of the choroid plexus of the fourth ventricle

A radioanatomical study of the plexus of the 4th ventricle has shown it to be clearly visible in about 35% of the lateral vertebral angiograms. With tumors of the posterior fossa the plexus is often not recognizable, perhaps because it is compressed. If filled, better information about the localization of tumors can be obtained.