脳血管写にて出血部位の見られた硬膜外血腫の1例

EPIDURAL HEMATOMA DIAGNOSED PREOPERATVELY BY EXTERNAL CAROTID ANGIOGRAPHY:REPORT OF A CASE

I．緒言

　最近，脳血管写の普及に伴い，脳神経疾患の診断に対する脳血管撮影術は，きわめて有力な補助診断法のひとつとして広く応用されている。

　外傷後頭蓋内血腫の診断にさいしては，その受傷程度，受傷後の症状の進展により，神経学的にその診断の可能な場合も少なくないが，その確定的な診断に脳血管写の施行がきわめて有意義である。

Cerebral angiography represent one of the most important diagnostic aids found in the armamenta-rium of the clinician endeavoring to explore obscure intracranial hematoma. However, it is often difficult to determine whether it is extradural or subdural in origin.

Recently we experienced a case diagnosed as an extradural hematoma preoperatively by the exter-nal carotid angiography which showed extravasation of contrastmedium from the middle meningeal artery and verified by the craniotomy.

There have reported the extravasation of the contrastmedium from the middle meningeal artery through the common carotid or external carotid angiography by many authors, in which most of them were taken with in 6 hrs. after the trauma. In the past, the reported longest time intervals be-tween the trauma and angiography was 32 hrs.

However, we detected an interesting case repre-senting the extravasation of the contrastmedium in the external carotid angiogram which was taken 100 hrs. after the trauma.