title: Angiographic features of subdural empyema.
abstract: Subdural empyema, a relatively rare intracranial suppurative disease, is a surgical emergency and requires early diagnosis in order to ensure patient survival. Subdural empyema should be considered with one or a combination of the following in conjunction with an extracerebral collection: (a) an irregular border of the extracerebral collection; (b) a thickened vascular wall of dura; (c) a semilunar avascular zone on the lateral view; (d) spasm of the large arteries at the base of the brain with or without segmental arterial dilatation; (e) multiple peripheral arterial occlusions; and (f) enlargement of the anterior falx artery. Four verified cases are presented.
mesh_terms: D000328:Adult; D002339:Carotid Arteries / Q000000981:diagnostic imaging; D002493:Central Nervous System Diseases / Q000000981:diagnostic imaging; D002533:Cerebral Angiography; D002648:Child; D003937:Diagnosis, Differential; D004653:Empyema / Q000000981:diagnostic imaging*; D005260:Female; D006801:Humans; D008297:Male; D008578:Meninges / Q000000981:diagnostic imaging*; D008875:Middle Aged; D013355:Subdural Space / Q000000981:diagnostic imaging*