Sugawara T, Kayama T, Sakurai Y, Ogawa A, Onuma T, Yoshimoto T, Suzuki J
Division of Neurosurgery, Stroke Center of Sendai National Hospital.
No Shinkei Geka. 1988 Dec;16(13):1445-50.
From April, 1978 through December, 1984, computed tomographic (CT) findings were carefully examined in 34 cases of initial subarachnoid bleeding due to a single ruptured aneurysm in the posterior fossa. All of the patients were hospitalized within 3 days of the onset of symptoms. High-density areas, which indicate the presence of subarachnoid clots, were evaluated in the interhemispheric and Sylvian fissures and the interpeduncular, prepontine, ambient, and quadrigeminal cisterns. The CT data suggest that hematomas in the four cisterns are thicker than those in the supratentorial subarachnoid spaces. Only one patient had an intracerebral hematoma. Hydrocephalus accompanied aneurysms of the posterior fossa more frequently than those of the anterior circulation.
从1978年4月至1984年12月，对34例因后颅窝单个动脉瘤破裂导致的原发性蛛网膜下腔出血病例的计算机断层扫描（CT）结果进行了仔细检查。所有患者均在症状发作后3天内住院。在大脑半球间裂和外侧裂以及脚间池、脑桥前池、环池和四叠体池评估了提示蛛网膜下腔血凝块存在的高密度区域。CT数据表明，这四个脑池内的血肿比幕上蛛网膜下腔的血肿更厚。只有一名患者有脑内血肿。与前循环动脉瘤相比，脑积水在后颅窝动脉瘤中更为常见。
