title: Colloid cyst of the third ventricle: sometimes more conspicuous on CT than MR.
abstract: We present two cases of surgically proved colloid cysts that were more apparent on CT scans than on MR images. These cysts, while hyperdense on CT scans, were nearly isointense with brain on multiple MR sequences. This relative lack of visibility represents a potential pitfall when imaging a patient with headache.
authors.affiliation: Department of Radiology, Dartmouth-Hitchcock Medical Center, Lebanon, NH 03756, USA.
authors.forename: A C
authors.initials: AC
authors.lastname: Mamourian
authors.forename: L D
authors.initials: LD
authors.lastname: Cromwell
authors.forename: R E
authors.initials: RE
authors.lastname: Harbaugh
mesh_terms: D000328:Adult; D001927:Brain Diseases / Q000175:diagnosis; D002552:Cerebral Ventricles / Q000473:pathology*; D014695:Cerebral Ventriculography; D003102:Colloids / Q000378:metabolism*; D003560:Cysts / Q000175:diagnosis* / Q000378:metabolism*; D005069:Evaluation Studies as Topic; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male
chemical_list: D003102:Colloids