外侧裂直接入路手术初步经验探讨

目的 探讨直接经外侧裂人路的显微外科手术理念和技术. 方法 回顾性分析62例经外侧裂直接入路手术患者的临床资料,其中外侧裂海绵状血管瘤4例,岛叶肿瘤5例(胶质瘤3例,海绵状血管瘤2例),大脑中动脉动脉瘤33例,骑跨或侵入外侧裂的胶质瘤15例,转移瘤l例,动静脉畸形2例,颞叶癫痫2例. 结果 41例血管性病变均显露满意,妥善处理.18例胶质瘤和1例转移瘤中13例全切除,其余均为次全切除.术后有3例患者曾出现短暂的失语,3例轻度偏瘫. 结论 外侧裂是良好的手术路径.宜在高倍镜下仔细分离.在涉及重要功能区时强调无张力牵开.对于累及外侧裂的肿瘤,提倡先显露并保护重要血管.再扩展切除范围.

Initial experience with mierosurgeries through direct Sylvian rtssure approach

ObJective To summarize the microsurgieal techniques through direct Sylvian fissure approach. Methods A retrospective analysis was conducted in 62 patients undergoing microsurgeries through direct Sylvian fissure approach, including 4 with cavernous angioma in the Sylvian fissure, 5 with insular lobe tumors, 33 with middle cerebral artery aneurysms, 15 with glioma spanning or invading the Sylvian fissure, 1 with metastatic tumor, 2 with arteriovenous malformations, and 2 with temporal lobe epilepsy. Results All the vascular lesions were exposed satisfactorily and managed appropriately. Of the 19 cases ofgliomas and metastatic tumors, total resection was achieved in 13 cases, and subtotal resection in 6 cases. Transient aphasia or hemiparesis occurred postoperatively in a few patients but all recovered within 1 or two months. Conclusions The Sylvian fissure provides a good surgical route as a subarachnoid space between the frontal, parietal, temporal and insular lobes. The Sylvian fissure should be carefully separated under the operating microscope with high-power magnification, and tension-free retaction is critical in important language areas. In the management of tumors involving the Sylvian fissure, we recommend that extended resection be performed after exposure and appropriate preservation of important blood vessels in the fissure.