【摘要】 目的:比较经胼胝体和经额中回两种途径达到脉络裂的优劣,为临床医师经脉络裂入路治疗第三脑室病变提供理论基础。方法:10例成人头颅标本,在放大10倍手术显微镜下分别依照经胼胝体-侧脑室-脉络裂入路和经额中回-侧脑室-脉络裂入路进行解剖观察。结果:脉络裂是位于丘脑和穹隆间的自然裂隙,经上述两种入路均可经侧脑室和脉络裂体部打开第三脑室顶部。胼胝体厚度为(7.2±0.8)mm,室间孔前后缘长度为(4.89±1.35)mm,室间孔前缘至静脉角的长度为(11.79±3.43)mm。结论:经胼胝体-侧脑室-脉络裂入路优于经额中回-侧脑室-脉络裂入路,经胼胝体-侧脑室-脉络裂入路具有损伤小,术野清晰的优点,是处理第三脑室病变的一个理想选择。更多还原

【Abstract】 Objective: To compare the advantages between transcallosal transchoroidal approach and the transfrontal transchoroidal approach, and to provide microsurgical anatomy to neurosurgeons of how properly to treat the lesions involving the third ventricle via the transchoroidal approach. Methods: Ten adult cadaver heads were carefully examined by way of the transcallosal transchoroidal approach and the transfrontal transchoroidal approach under microscope with 10-fold magnification. Results: The choroidal fissure was a natural cleft between the thalamus and the fornix. The roof of the third ventricle could be revealed by both the two approaches above mentioned. The thickness of corpus callosum was (7.2±0.8)mm. The distance between the front edge and the rear edge of the foramen of Monro was (4.89±1.35)mm, while the distance between the front edge of the foramen of Monro and angulus venosus was (11.79±3.43)mm. Conclusions: The transcallosal transchoroidal approach is better than the transfrontal transchoroidal approach. The transchoroidal approach follows a natural route to the third ventricle and is advantages of less injury and wider exposure than other approaches. It is one of ideal choices for treatment of lesions involving the anterior portion of the third ventricle.更多还原