Aoki H, Sando I, Takahashi H
Department of Otolaryngology, University of Pittsburgh School of Medicine, PA.
Auris Nasus Larynx. 1993;20(2):125-30. doi: 10.1016/s0385-8146(12)80239-2.
Differences in the extent of mucosal folding in the superior versus the inferior half of the human Eustachian tube (ET) were studied in young children by measuring the length of the mucosal margin and counting the number of mucosal folds, as they appeared in histological cross-sections, in the pharyngeal, midcartilaginous, isthmus, and osseous portions of each half of the ET in 12 normal ET/temporal bone specimens from 12 individuals aged 1 day to 2 years. The mucosal margin of the ET was significantly longer in the inferior half than in the superior half in the pharyngeal, midcartilaginous, and isthmus portions (paired t-test, pharyngeal portion: t[11] = 3.71, p < 0.01; midcartilaginous portion: t[11] = 4.52, p < 0.01; isthmus portion: t[11] = 3.40, p < 0.01). However, there was no significant difference between in the inferior half and in the superior half at the osseous portion. Also there were significantly more mucosal folds in the inferior half than in the superior half in all four portions (paired t-test, pharyngeal portion: t[11] = 3.46, p < 0.01; midcartilaginous portion: t[11] = 7.40, p < 0.01; isthmus portion: t[11] = 5.03, p < 0.01; osseous portion: t[11] = 4.49, p < 0.01). These results indicate that the surface area of the mucosa in the inferior half of the ET is larger than that of the superior half.(ABSTRACT TRUNCATED AT 250 WORDS)
通过测量12例年龄从1天至2岁的个体的12个正常咽鼓管/颞骨标本中，咽鼓管（ET）上下两半在组织学横截面中呈现的黏膜边缘长度并计算黏膜皱襞数量，研究了幼儿期人类ET上下两半黏膜折叠程度的差异。在咽、软骨中部、峡部，ET下半部的黏膜边缘显著长于上半部（配对t检验，咽部：t[11]=3.71，p<0.01；软骨中部：t[11]=4.52，p<0.01；峡部：t[11]=3.40，p<0.01）。然而，在骨部，下半部与上半部之间无显著差异。此外，在所有四个部分中，下半部的黏膜皱襞均显著多于上半部（配对t检验，咽部：t[11]=3.46，p<0.01；软骨中部：t[11]=7.40，p<0.01；峡部：t[11]=5.03，p<0.01；骨部：t[11]=4.49，p<0.01）。这些结果表明，ET下半部黏膜的表面积大于上半部。（摘要截短于250字）
