Lourie H, Shende M C, Krawchenko J, Stewart D H
Neurosurgery. 1980 Sep;7(3):279-82. doi: 10.1227/00006123-198009000-00015.
A trapped or isolated 4th ventricle presents as a posterior fossa mass lesion. It occurs in patients with prior lateral ventricular shunting and is diagnosed by computed tomographic scan. Two unusual cases are reported here.