J Seroussi1, C Hautefort2, A Gillibert1, R Kania2, J-P Guichard1, H Vitaux2, P Herman2, E Houdart1, A Attyé3, M Eliezer4. 1. Department of Neuroradiology, Lariboisière University Hospital, 75010 Paris, France. 2. Department of Head and Neck Surgery, Lariboisière University Hospital, 75010 Paris, France. 3. Department of Neuroradiology and MRI, Grenoble Alpes University Hospital, SFR RMN Neurosciences, 38000 Grenoble, France. 4. Department of Neuroradiology, Lariboisière University Hospital, 75010 Paris, France. Electronic address: michael.eliezer@aphp.fr.
Abstract
PURPOSE: To report the postoperative magnetic resonance imaging (MRI) features after superior semicircular canal plugging in patients with Minor syndrome. MATERIALS AND METHODS: The MRI examinations with 3D T2-weighted SPACE sequence of 12 patients with superior semicircular canal dehiscence syndrome (SCDS) were retrospectively assessed. Two radiologists independently evaluated the presence of a filling defect of the superior semicircular canal above the superior ampulla and the common crus using an oblique plane parallel to the superior semicircular canal (Pöschl's plane). RESULTS: Postoperative MRI showed a filling defect above the ampulla of the superior semicircular canal and the common crus in 8/12 patients (67%). Three patients (3/12; 25%) had a filling defect involving also the superior ampulla that caused postoperative labyrinthitis with labyrinthine enhancement on MRI in 2 patients. One patient (1/12; 8%) had incomplete plugging of superior semicircular canal with abnormal functional tests and remaining symptoms. CONCLUSION: Postoperative MRI shows a normal plugging aspect of the superior semicircular canal in 67% of patients. MRI can reveal complications that may have therapeutic implications. Published by Elsevier Masson SAS.
PURPOSE: To report the postoperative magnetic resonance imaging (MRI) features after superior semicircular canal plugging in patients with Minor syndrome. MATERIALS AND METHODS: The MRI examinations with 3D T2-weighted SPACE sequence of 12 patients with superior semicircular canal dehiscence syndrome (SCDS) were retrospectively assessed. Two radiologists independently evaluated the presence of a filling defect of the superior semicircular canal above the superior ampulla and the common crus using an oblique plane parallel to the superior semicircular canal (Pöschl's plane). RESULTS: Postoperative MRI showed a filling defect above the ampulla of the superior semicircular canal and the common crus in 8/12 patients (67%). Three patients (3/12; 25%) had a filling defect involving also the superior ampulla that caused postoperative labyrinthitis with labyrinthine enhancement on MRI in 2 patients. One patient (1/12; 8%) had incomplete plugging of superior semicircular canal with abnormal functional tests and remaining symptoms. CONCLUSION: Postoperative MRI shows a normal plugging aspect of the superior semicircular canal in 67% of patients. MRI can reveal complications that may have therapeutic implications. Published by Elsevier Masson SAS.
Entities:
Keywords:
Inner ear; Magnetic resonance imaging (MRI); Minor syndrome; Superior semicircular canal dehiscence; Superior semicircular canal plugging
Authors: Pierre Reynard; Samar Idriss; Aicha Ltaief-Boudrigua; Pierre Bertholon; Andreea Pirvan; Eric Truy; Hung Thai-Van; Eugen C Ionescu Journal: Front Neurol Date: 2022-01-11 Impact factor: 4.003