CT and MRI for the diagnosis of perilymphatic fistula: a study of 17 surgically confirmed patients.
Aïna VenkatasamyZiad Al OhrainiAnne KarolAurélie Karch-GeorgesSophie RiehmDominique RohmerAnne CharpiotFrancis VeillonPublished in: European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery (2020)
The combination of CT and MRI is a reliable tool for a fast and accurate diagnosis of round and oval window perilymphatic fistula, with good sensitivity (> 80%). The most common sign of PLF on imaging is the presence of a fluid-filling in the RW (especially if > 2/3 of the RW niche) or in the OW niches on both CT and MRI. A disorientation of the footplate or the presence of a pneumolabyrinth are clearly in favor of an oval window perilymphatic fistula.