Stark, J E MR demonstration of ectopic fourth ventricular choroid plexus in Chiari II malformation. [electronic resource] - AJNR. American journal of neuroradiology - 618-21 p. digital Publication Type: Journal Article ISSN: 0195-6108 Subjects--Topical Terms: Arnold-Chiari Malformation--complicationsCerebellar Neoplasms--complicationsCerebral Ventricles--pathologyChildChild, PreschoolChoristoma--complicationsChoroid Plexus--pathologyFemaleHumansMagnetic Resonance ImagingMaleSpina Bifida Cystica--complications