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. 2023 Jun 21;9(4):1196–1235. doi: 10.3390/tomography9040097

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© 2023 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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Endolymphatic sac tumor. (A) Axial and (B) coronal CT images show a lytic lesion with a moth-eaten, permeative appearance in the right retro-labyrinthine petrous temporal bone extending to the middle ear cavity, mastoid region, and jugular fossa. (C) Axial fat-suppressed T2W, (D) axial FLAIR, and (E) axial noncontrast T1W images demonstrate a complex solid and cystic lesion with mixed signal intensity, likely reflecting hemorrhagic and proteinaceous contents. (F) Postoperative coronal postcontrast T1-weighted image shows heterogeneous enhancement in the residual solid component of the lesion (red arrows). The more lateral tissue corresponds to a fat graft (asterisk).