title: Computed tomography of colloid cysts of the third ventricle.
abstract: Ten cases of colloid cysts of the third ventricle were evaluated by computed tomography (CT). The smallest lesion demonstrated was 6 mm in diameter and the largest 6.5 cm. Six lesions were hyperdense and four isodense. None of the lesions exhibited significant enhancement after the administration of contrast medium. A non-contrast CT scan is essential for the demonstration of a small hyperdense colloid cyst as the latter may simulate normal vascular structures on the post-contrast scan.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002551:Cerebral Ventricle Neoplasms / Q000000981:diagnostic imaging*; D014695:Cerebral Ventriculography; D002675:Child, Preschool; D003560:Cysts / Q000000981:diagnostic imaging*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D014057:Tomography, X-Ray Computed