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. 2021 Feb 4;11:3127. doi: 10.1038/s41598-021-82984-w

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© The Author(s) 2021

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

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Temporal bone MRI of the patient with zoster sine herpete in the right side (A, B). (A) Post-contrast 3D T1 weighted image at the level of the internal auditory canal demonstrates enhancement of the labyrinthine segment of the right facial nerve (long arrow), right vestibular nerve (short arrow), and dura (arrowhead). (B) Non-contrast axial T2-weighted image shows high signal intensity from the fluid in the right mastoid suggesting mastoid effusion (dotted circle). Temporal bone MRI of the patient, who developed vesicular skin eruption in the left ear without acute facial nerve palsy (C, D). (C) Post-contrast 3D T1 weighted image at the level of the internal auditory canal demonstrates enhancement of the labyrinthine segment of the left facial nerve (long arrow), left vestibular nerve (short arrow), and dura (arrowhead). (D) Non-contrast axial T2-weighted image shows normal mastoid cavity on the left side (dotted circle). Temporal bone MRI of another patient, who developed vesicular skin eruption in the left ear without acute facial nerve palsy (E, F). (E) Post-contrast 3D T1 weighted image at the level of the internal auditory canal demonstrates enhancement of the labyrinthine segment of the left facial nerve (long arrow), left vestibular nerve (short arrow), and dura (arrowhead). (D) Non-contrast axial T2-weighted image shows normal mastoid cavity on the left side (dotted circle).