Computed tomography of the enlarged cisterna magna.
The unusual appearance of the large cisterna magna on computed tomography is presented and the radiographic signs are reviewed and correlated. This entity may be confused with a variety of other lesions. Awareness of such developmental anomalies may obviate the need for angiography and pneumoencephalography in selected cases.
D000293:Adolescent; D000328:Adult; D000792:Angiography; D001932:Brain Neoplasms / Q000000981:diagnostic imaging; D002493:Central Nervous System Diseases / Q000000981:diagnostic imaging; D002946:Cisterna Magna / Q000002:abnormalities / Q000098:blood supply / Q000000981:diagnostic imaging*; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011011:Pneumoencephalography; D014057:Tomography, X-Ray Computed; D014711:Vertebral Artery / Q000000981:diagnostic imaging