内淋巴囊解剖及临床意义

Anatomy of the endolymphatic sac and its clinical significance

为了解内淋巴囊的解剖变异情况，解剖甲醛固定的颞骨28侧，观察26例行内淋巴囊减压术的Meniere病患者的内淋巴囊位置、局部血管分布情况，显微镜下测量长和宽。结果28例颞骨均找到内淋巴囊，其平均长度为6．94±2．04mm，平均宽度为5．88±1．65mm。囊表面血管分布显示不清晰。26例Meniere病者24例找到内淋巴囊，平均长度为6．81±2．24mm，平均宽为5．67±1．51mm。囊表面血管分布不清晰者占29％。根据观察，内淋巴囊的位置通常位于Donaldson线上，乳突气化程度不佳时，囊位置多靠下，且较小。为内淋巴囊手术时的定位及识别提供了解剖学参考。

Using 28 formalin fixed temporal bones and materials of 26 cases of endolymphatic surgery for menieres' disease, the location, vascular distribution and size of the endoyphatic sac(ELS) were investigated. ELS were measured with surgical microscope in all the cadaver specimen with a mean length of 6. 9393 ± 2. 0429mm and mean width of 5. 8821 ± 1. 6522mm. All the specimens showed no clear capillary distribution. Only in 24 of the 26 ELS surgeries for Menieres' disease the ELS were found. The mean length was 6. 8125 ± 2. 2449mm, the mean width 5. 6666 ±1. 5084mm and the vascu1ar distrbution was unclear in 29% of the cases. It was found that the ELS usually lo-cated at the Donaldson line, and moved downward in the under-developed mastoid with smaller size.