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著者对保存在骨库中的40个具有鼓膜穿孔的颞骨进行了组织学观察,重点研究了穿孔边缘的上皮状态。其中34耳为慢性中耳炎合并紧张部穿孔,6耳为渗出性中耳炎放置通气管所致的穿孔,结果如下: 一、慢性中耳炎所致的穿孔根据其边缘的上皮状态,可分为三种类型:A型:外耳道表皮与中耳粘膜的接合处恰好在穿孔边缘上。属此型的有16耳,其中14耳为中央性穿孔,仅2耳为边缘性穿孔。B型:外耳道上皮越过穿孔边缘,侵入中耳腔,即上皮与粘膜的接合处位于中耳腔内。属此型者共有11耳,其中7耳为中央性穿
The authors performed histological observations of 40 temporo-temporal bones with tympanic membrane perforations stored in the bone bank, focusing on the epithelial state of the perforation. Among them, 34 ears were chronic otitis media with perforation, and 6 ears were perforation caused by exudative otitis media with ventilation tube. The results were as follows: 1. The perforation caused by chronic otitis media can be divided into three types according to their marginal epithelial status : Type A: The junction of the external ear canal epidermis and the middle ear mucosa happens to be on the perforation edge. This type of 16 ears, of which 14 ears for the central perforation, only 2 ears for the marginal perforation. Type B: The external auditory meatus epithelium crosses the perforation edge and invades the middle ear cavity, that is, the junction of epithelium and mucosa is located in the middle ear cavity. This type is a total of 11 ears, of which 7 ears for the central wear