title: Stenosis of the aqueduct of non-tumoral origin.
mesh_terms: D000293:Adolescent; D000328:Adult; D001921:Brain / Q000000981:diagnostic imaging; D001927:Brain Diseases / Q000150:complications / Q000000981:diagnostic imaging*; D001932:Brain Neoplasms / Q000000981:diagnostic imaging; D002535:Cerebral Aqueduct / Q000002:abnormalities / Q000000981:diagnostic imaging; D014695:Cerebral Ventriculography; D002648:Child; D002946:Cisterna Magna; D003937:Diagnosis, Differential; D004677:Encephalocele / Q000000981:diagnostic imaging / Q000209:etiology; D005260:Female; D006801:Humans; D006849:Hydrocephalus / Q000000981:diagnostic imaging / Q000209:etiology; D007427:Intracranial Pressure; D008297:Male; D008875:Middle Aged; D011011:Pneumoencephalography