The Arachnoid Sleeve Enveloping the Pituitary Stalk: Anatomical and Histologic Study
The Arachnoid Sleeve Enveloping the Pituitary Stalk: Anatomical and Histologic Study
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DOI：
10.1227/01.neu.0000365371.50165.06
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发表时间：
2010-03-01
期刊：
影响因子：
4.8
通讯作者：
Lu Yun-tao
中科院分区：
文献类型：
--
作者：
Qi Song-tao;Zhang Xi-an;Lu Yun-tao
背景技术背景：鞍上区蛛网膜可能影响鞍区和鞍上肿瘤的生长方式，但垂体柄与周围蛛网膜的解剖关系尚不清楚。目的：本研究的目的是评价蛛网膜的解剖学和组织学特征。对16例经福尔马林固定的成人尸头进行了显微外科解剖和解剖学观察。结果：所有标本均存在一个长度不等的蛛网膜袖，它是由覆盖在蝶鞍上的蛛网膜基底膜直接向上延伸形成的，它包裹着垂体柄。在大多数标本中，蛛网膜袖被强化的蛛网膜小梁起源于基底蛛网膜，Liliequist膜，和颈动脉内侧membrane.CONCLUSION：垂体柄和周围的蛛网膜之间的关系是重要的鞍和鞍上肿瘤的生长模式，和它们的地形关系进行评估。
BACKGROUND: The arachnoid membrane in the suprasellar region may affect the growth pattern of sellar and suprasellar tumors however, the topographic relationships between the pituitary stalk and the surrounding arachnoid membranes remained unclear.OBJECTIVE: The aim of this study was to evaluate the anatomical and histological characteristics of the arachnoid membranes.METHODS: Microsurgical dissection and anatomical observation were performed in 16 formalin-fixed adult cadaver heads. In the other 5 adult cadaver heads, histologic sections of sellar-suprasellar specimens were studied under light microscopy.RESULTS: An arachnoid sleeve enveloping the pituitary stalk of variable length presented in all specimens, which was formed by direct upward extension of the basal arachnoid membrane covering the diaphragma sellae. In the majority of specimens, the arachnoid sleeve was reinforced by the arachnoid trabeculae originating from the basal arachnoid membrane, the Liliequist membrane, and the medial carotid membrane.CONCLUSION: The relationship between the pituitary stalk and the surrounding arachnoid membrane is important in evaluating the growth patterns of the sellar and suprasellar tumors, and their topographical relationships.