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乳突气房发育不良与中耳慢性炎症的关系说法不一。Diamant(1940)认为乳突气房的大小由遗传因子决定。乳突气房小者易罹中耳炎。后藤(1953)主张乳突气房发育不良系颞骨发育不良的伴随现象而与遗传关系密切。Schulter-Ellis(1979)发现人种间乳突气房发育有差別,认为遗传起重大作用。而Wittmaack(1918)则提出新生儿羊水侵入中耳引起潜伏性中耳炎可抑制乳突气虏发育。Turmar-
Mastooptic dysplasia and chronic inflammation of the middle ear have different opinions. Diamant (1940) that the size of mastoid air chamber by the genetic factor. Mastoid air room is easy to suffer from otitis media. Goto (1953) advocated mastoid dysplasia Department of temporal bone dysplasia accompanied by the phenomenon closely linked with the genetic. Schulter-Ellis (1979) found that there is a difference in the development of interstitial mastodon and that genetic heredity plays a major role. Wittmaack (1918) proposed that the invasion of neonatal amniotic fluid into the middle ear caused by latent otitis media can inhibit the mastoid gas captive development. Turmar-