摘要
AbstractCerebrospinal fluid (CSF) fistulae originating from the fallopian canal of the facial nerve is hypothesized to arise due to atypical patterns of subarachnoid space extension into the geniculate ganglion or more distal regions along the intratemporal course of the facial nerve, but its pathogenesis remains poorly understood. Although a rare etiology of CSF fistulae of the temporal bone, there are significant clinical ramifications due to the risk of recurrent meningitis, difficulty in identifying the anatomic location of the CSF leak, and technical challenges associated with surgical repair. We present three clinical cases of arachnoid cysts within the geniculate fossa with or without CSF fistulization and provide histopathologic correlates of this rare clinical phenomenon from a human temporal bone collection. The pediatric and adult patients presented suggest differential pathophysiologic mechanisms associated with CSF fistulae. Temporal bone histology reveals atypical patterns of subarachnoid space extension in the fallopian canal that may underlie arachnoid cyst formation and overt CSF leak from the geniculate region.
机构地区
Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins University, USA,Inova Fairfax Hospital, USA,Department of Otolaryngology- Head and Neck Surgery, University of California San Francisco, USA,Department of Head and Neck Surgery and Communication Sciences, Duke University, USA
出版日期
2021年05月16日（中国期刊网平台首次上网日期，不代表论文的发表时间）
