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CT scanning for the diagnosis of delayed epidural hematoma following craniocerebrai trauma

YU Zhi-jian WANG Bao-an LIU Yong-yan.Department of Radiology,Zhujiang Hospital,Southern Medical University,Guangzhou 510282,China  
Objective To discuss the importance and indications of recheck cranial CT scan for the diagnosis of delayed epidural hematoma(DEDH).Methods The disease progress and cranial CT scan findings for 7 cases with DEDH following craniocerebral trauma were retrospectively summarized.Results All the 7 cases had obviously delayed psychological and behavioral changes which happened within 4-52 h after craniocerebral trauma,and recheck CT scan detected DEDH in all of them.Skull fracture was found in 5 cases,intractable severe headache also in 5 cases,deteriorated nausea and vomiting in 3 cases,unilateral mydriasis in 2 cases and consciousness disturbance and convulsion in a respective 1 case.Conclusion Recheck CT scan should be performed on patients with craniocerebral trauma to promptly demonstrate the existence of DEDH if the patient develops skull fracture and/or obvious psychological and behavioral changes,although no abnormality or only insignificant abnormality has been revealed by the first cranial CT scan.
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