垂体上动脉的显微外科解剖及其临床意义  

The microsurgical anatomy of the superior hypophyseal artery and its clinical significance

作　　者：牛朝诗[1,2] 罗其中[1,2] 韩卉[1,2] 

机构地区：[1]上海第二医科大学附属仁济医院神经外科 [2]安徽医科大学神经生物学研究室

出　　处：《中国临床解剖学杂志》1999年第3期204-205,共2页Chinese Journal of Clinical Anatomy

摘　　要：目的：为探讨垂体上动脉在鞍区显微外科手术时的意义，以及与颈内动脉眼动脉段动脉瘤发生的关系。方法：研究了２４例颅脑４８侧颈内动脉发出的垂体上动脉的显微外科解剖。结果：垂体上动脉起自颈内动脉眼动脉段，有１～４支，可分为单支型（３７．５％）和多支型（６２．５％）。平均支数为２．２±１．０支，直径为０．２６±０．１（０．１６～０．４８）ｍｍ。起点在颈内动脉起点远侧５．８±２．０（３．６～１８．６）ｍｍ。该动脉起始后向内、后、上行至视交叉下前面，发出分支与对侧垂体上动脉和后交通动脉分支相互吻合，构成漏斗周围吻合网，分布至漏斗、垂体、视交叉。且有一恒定分支折返前行至视神经，它对视神经的血液供应起着非常重要的作用。结论：该动脉的显微解剖，对理解颈内动脉瘤的发生以及鞍区肿瘤的外科手术有重要的临床意义。Objective:To explore the significance of the superior hypophseal artery in the operation of the sella area and the relationship between the superior hypophyseal artery and aneurysm of the ophthalmic segment of internal carotid artery.Methods:The microsurgical anatomy of the superior hypophyseal artery was performed in 48 internal carotid arteries on 24 cranial specimens.Results:The superior hypophseal artery arose from the ophthalmic segment of the internal carotid artery,and had 1～4 branches wih diameter of 0.26±0.1 mm.The origin of the artery was 5.8±2.0 mm away from the ophthalmic artery origin.The arterial branches went posterosuperiorly and medially towards the origin of the pituitary stalk,and then further divided into several branches which anastomosis with hypophyseal artery branches arising from the other side and the posterior communicating arteries to form a circuminfundibulum network.This network supplied the infundibulum,hypophysis and the inferior aspect of the optic chasm.It also gave a recurrent branch to the optic nerve.Conclusions:The result provided an important clinical significance in our understanding of the site of the internal caroid aneurysm and the operation of sella area tumor

关 键 词：垂体上动脉 显微外科解剖 鞍区肿瘤 

分 类 号：R329.48[医药卫生—人体解剖和组织胚胎学] R739.41[医药卫生—基础医学]