脳出血3例の脳動脈樹脂鋳型標本

ARTERIAL TREES OF HUMAN BRAIN WITH INTRACEREBRAL HEMATOMA

Ｉ．緒言

　さきに私たちは大脳出血例の樹脂鋳型標本について頭蓋内諸動脈の変形や偏位を観察し，さらに大脳出血によつてもたらされた血行動態の変化を考察した^5）。その後さらに脳出血と考えられる3例について樹脂銑型標本を作成検索したのでここにその所見を報告する。

Deformities of cerebral arteries due to intracerebral hemorrhage were demonstrated in three brains by methacrylate arterial casts.

Medial shift of the lateral striate arteries and re-current artery of Heubner on the left was caused by hematoma in the left basal ganglia in case No. 1. A few resin balls were found at the ends of their branches. Caudal shift of paramedian branches in lower pons was caused by brainstem hemorrhage in case No. 2 and rostral shift of paramedian branchesin midbrain and upper pons was caused by brainstem hemorrhage in case No. 3. A few resin balls were noted at the ends of paramedian branches in the mid-pons. Resin balls in the two cases might have been caused by rupture of arterial wall. Possible etiological significance of the resin balls in the production of hematoma was suggested.

In case No.1 there were seen shift of left anterior cerebral artery to the right at the cingular gyrus, poor filling of methacrylate in the vertebro-basilar system and flattend basilar artery, which might have been resulted from the expansive supratentorial le-sion. In the two cases of brainstem hemorrhage there were no deformities of the supra-tentorial arterial casts.