title: Periaqueductal neoplasms and vascular malformations.
mesh_terms: D000293:Adolescent; D000328:Adult; D001927:Brain Diseases / Q000209:etiology; D001932:Brain Neoplasms / Q000000981:diagnostic imaging*; D002535:Cerebral Aqueduct / Q000000981:diagnostic imaging*; D014695:Cerebral Ventriculography; D002648:Child; D005260:Female; D005910:Glioma / Q000000981:diagnostic imaging*; D006801:Humans; D007231:Infant, Newborn; D002538:Intracranial Arteriovenous Malformations / Q000000981:diagnostic imaging*; D008297:Male; D008636:Mesencephalon