title: Computed tomography in the diagnosis of colloid cysts of the third ventricle.
abstract: The computed tomographic findings in 14 cases of colloid cysts of the third ventricle are discussed. These tumors usually present as homogeneous, rounded lesions at the level of the foramina of Monro, with widening of the septum pellucidum. They are commonly hyperdense and show some enhancement upon injection of contrast material. The differential diagnosis of these tumors includes aneurysms of the tip of the basilar artery and the various gliomas of the third ventricle.
mesh_terms: D000328:Adult; D001254:Astrocytoma / Q000000981:diagnostic imaging*; D001927:Brain Diseases / Q000000981:diagnostic imaging; D002551:Cerebral Ventricle Neoplasms / Q000000981:diagnostic imaging*; D014695:Cerebral Ventriculography; D003397:Craniopharyngioma / Q000000981:diagnostic imaging*; D003560:Cysts / Q000000981:diagnostic imaging*; D003937:Diagnosis, Differential; D004806:Ependymoma / Q000000981:diagnostic imaging*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D014057:Tomography, X-Ray Computed