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脑脊液(CSF)从蛛网膜下腔流入颞骨的气化空间,最常见于伴有硬脑膜和蛛网膜撕裂的骨折,其次是经过颞骨的颅内手术,感染或新生物较少见,自发性者更少。本文报告两例CSF耳漏,介绍一种修补方法,并讨论瘘孔定位问题。两例均为成人,因大量CSF从外耳道流出就诊,无感染、严重外伤史或先天性畸形。第1例第一次手术时怀疑CSF从圆窗流出,用耳屏软骨膜覆盖无效。第二次手术取耳后进路凿开上鼓室和乳突,经面神经隐窝进入中耳,见鼓窦天盖有一3×4mm裂隙及硬脑膜缺损,约3×4×3mm之
Cerebrospinal fluid (CSF) flows from the subarachnoid space into the gasification space of the temporal bone, most commonly in fractures associated with dural and arachnoid tears, followed by intracranial surgery through the temporal bone, with rare infection or neoplasia, spontaneous Fewer. This article reports two cases of CSF ear leaks, describes a repair method, and discusses the fistula hole location. Both cases were adults, due to a large number of CSF outflow from the external auditory canal, no infection, severe trauma or congenital malformations. The first case of the first surgery suspected CSF outflow from the round window, with tragus peritoneal coverage ineffective. After the second operation, the ear was taken and the upper tympanic cavity and mastoid were excavated. The facial nerve recess was inserted into the middle ear. A 3 × 4 mm fissure and dura mater defect was found on the sinonasal surface, about 3 × 4 × 3 mm