起源于颅外的小脑后下动脉存在一个颅外动脉瘤。
Posterior inferior cerebellar artery with extracranial origin harboring an extracranial aneurysm.
作者信息
Lin Chun-Fu, Hsu Sanford P C, Chen Ming-Teh, Chen Hsin-Hung, Shih Yang-Hsin, Lee Liang-Shong, Chen Min-Hsiung
机构信息
Department of Neurosurgery, Neurological Institute, Taipei Veterans General Hospital and School of Medicine, National Yang-Ming University, Taipei 112, Taiwan, Republic of China.
出版信息
Surg Neurol. 2007;68 Suppl 1:S64-7. doi: 10.1016/j.surneu.2007.08.025.
BACKGROUND
We report on a rare case of a saccular aneurysm on the TM segment of the right PICA. The aneurysm was located at the nonbifurcation region of the PICA.
CASE DESCRIPTION
The patient underwent a brain CT scan that revealed a diffuse SAH and an IVH in the fourth ventricle with obstructive hydrocephalus. After external ventricular drainage to relieve the hydrocephalus, the aneurysm was demonstrated by cerebral digital subtraction angiography.
CONCLUSIONS
The origin of the PICA aneurysm was extracranial and intradural, illustrating a rare location of such type of aneurysm.
背景
我们报告一例罕见的右侧小脑后下动脉（PICA）颞髓段囊状动脉瘤病例。该动脉瘤位于PICA的非分叉区域。
病例描述
患者接受脑部CT扫描，显示弥漫性蛛网膜下腔出血（SAH）及第四脑室内的脑室内出血（IVH）伴梗阻性脑积水。在进行脑室外引流以缓解脑积水后，通过脑血管数字减影血管造影术显示出动脉瘤。
结论
PICA动脉瘤起源于颅外硬膜内，显示出此类动脉瘤的罕见位置。
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