内耳圆窗膜或卵圆窗破裂导致外淋巴液渗漏入中耳,称外淋巴瘘(perilymph fistula)。 临床上,不管什么原因引起的外淋巴瘘,都可导致一种综合症状,如突发性眩晕、耳鸣和听力减退等。如不治疗,这些症状往往逐渐加重。外淋巴瘘持续存在时,可使耳蜗柯替氏器产生不可逆的病理改变。如继发感染,可引起迷路的化脓性病变,严重时可并发化脓性脑膜炎。 Rupture of the inner ear round window membrane or oval rupture leads to perilymph leakage into the middle ear, called perilymph fistula. Clinically, no matter what causes external lymphatic fistula, can lead to a syndrome, such as sudden dizziness, tinnitus and hearing loss and so on. Without treatment, these symptoms tend to increase gradually. Peripheral lymphatic fistula persists, can make irreversible pathological changes in the Cochlear Cochlearia. Such as secondary infection, can cause stasis of purulent lesions, severe purulent meningitis may be complicated.