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了解中耳炎性病变对咽鼓管峡部粘－软骨膜的影响。方法：用光镜对３２耳各型中耳炎颞骨（中耳炎组）与５０耳正常颞骨（正常组）标本连续切片的咽鼓管峡部粘－软骨膜、中耳腔鼓岬粘骨膜进行组织病理学比较观察。结果：中耳炎组和正常组颞骨标本咽鼓管峡部均无病理性阻塞；中耳炎组峡部粘－软骨膜厚度测量和病理观察，未见有明显炎症改变，与正常组比较无明显差异；而其中耳腔粘骨膜均有明显炎性病变。这种对炎症截然不同反应的界限恰好在咽鼓管的骨与软骨交界处。结论：由于组织结构的特殊性，咽鼓管粘－软骨膜对炎症具有很强的屏障功能，极少可能受炎症影响而阻塞咽鼓管腔。
To understand the impact of middle ear inflammatory lesions on visco-cartilage membrane of the eustachian isthmus. Methods: The histopathological changes of mucoperiosteal-viscus-peri-cartilage and middle ear drumbone promontory mucosa of 32 otitis media with temporal bone (otitis media group) and 50 normal temporal bone (normal group) were observed by light microscope Observed. Results: There was no pathological obstruction of the isthmus and eustachian isthmus in the otitis media group and the normal group. There was no obvious change in visceral-perfused cartilage thickness and histopathology in the otitis media group. There was no significant difference between the otitis media group and the normal group Cavity mucoperiosteal obvious inflammatory lesions. The boundary of this completely different response to inflammation happens to be at the junction of the bones and cartilages of the eustachian tube. Conclusion: Due to the particularity of the tissue structure, the eustachian tube visco-peritoneum has a strong barrier function against inflammation and is less likely to block the eustachian tube cavity due to inflammation.