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Hyrtl's Fissure : ウィキペディア英語版 | Hyrtl's Fissure
Hyrtl's Fissure also known as tympanomeningeal hiatus, is a transient anatomic landmark in the developing fetal petrous temporal bone and is usually closed by normal progression of ossification in the 24th week of gestation . it is occasionally persists into extrauterine life and has been reported as unusual cause of (perilabyrinthine cerebrospinal fluid ) fistula.It runs parallel to cochlear aqueduct.It can ba a source of congenital |CSF otorrhoea or meningitis from middle ear infections.Normally it gets obliterated. 〔http://www.ncbi.nlm.nih.gov/m/pubmed/12170149〕 〔http://www.ajnr.org/content/26/4/963.full〕 == Radiographic features ==
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Hyrtl's Fissure」の詳細全文を読む
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