CT and MRI for the diagnosis of perilymphatic fistula: a study of 17 surgically confirmed patients - Archive ouverte HAL
Article Dans Une Revue European Archives of Oto-Rhino-Laryngology Année : 2020

CT and MRI for the diagnosis of perilymphatic fistula: a study of 17 surgically confirmed patients

Aïna Venkatasamy
  • Fonction : Auteur
  • PersonId : 1126009
Ziad Al Ohraini
  • Fonction : Auteur
Anne Karol
  • Fonction : Auteur
Aurélie Karch-Georges
  • Fonction : Auteur
Sophie Riehm
  • Fonction : Auteur
Dominique Rohmer
  • Fonction : Auteur
Francis Veillon
  • Fonction : Auteur

Résumé

BACKGROUND: We evaluated the usefulness of CT and MRI for the diagnosis of perilymphatic fistula (PLF) of the round (RW) and/or oval (OW) windows, with surgery as gold standard. METHODS: We retrospectively enrolled 17 patients who presented a surgically confirmed PLF of the round (RW) or oval (OW) windows. All patients were imaged by CT + MRI (T2W SSFP without contrast) prior to surgery (= gold standard). Two radiologists, analyzed the RW and OW on the side of the clinical symptoms and sensitivity (Se) + Specificity (Sp) were calculated. RESULTS: Round window fistula was the most frequent (71%). The best sign of PLF on imaging was a fluid filling of the window niches, which had good Se (83-100% for RW, 66-83% for OW) and Sp (60% for RW, 91-100% for OW). Disorientation of the footplate and pneumolabyrinth were also only observed in 50% of OW PLF. CONCLUSION: 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.
Fichier non déposé

Dates et versions

hal-03573948 , version 1 (14-02-2022)

Identifiants

Citer

Aïna Venkatasamy, Ziad Al Ohraini, Anne Karol, Aurélie Karch-Georges, Sophie Riehm, et al.. CT and MRI for the diagnosis of perilymphatic fistula: a study of 17 surgically confirmed patients. European Archives of Oto-Rhino-Laryngology, 2020, 277 (4), pp.1045-1051. ⟨10.1007/s00405-020-05820-3⟩. ⟨hal-03573948⟩
34 Consultations
0 Téléchargements

Altmetric

Partager

More