title: Delayed development of extradural haematomas.
abstract: Two cases of extradural haematoma of delayed onset, demonstrated by serial computed tomography (CT), are presented. the first patient developed a fatal posterior fossa haematoma, which was not present on the initial CT four hours after the accident. The second patient developed a right parietal haematoma, which was not present on the CT two and a half hours after the accident. These cases are in disagreement with the hypothesis that extradural haematomas reach near maximum size within minutes after trauma.
mesh_terms: D000293:Adolescent; D001927:Brain Diseases / Q000000981:diagnostic imaging; D002543:Cerebral Hemorrhage / Q000503:physiopathology*; D004388:Dura Mater; D005188:False Negative Reactions; D005260:Female; D006406:Hematoma / Q000000981:diagnostic imaging / Q000503:physiopathology*; D006801:Humans; D013997:Time Factors; D014057:Tomography, X-Ray Computed