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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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Fibrous dysplasia. (A) Sagittal CT image shows a well-defined expansile ground-glass density lesion in the clivus and posterior sphenoid sinuses. The lesion demonstrates peripheral sclerotic and central small lytic regions. (B,C) Sagittal T1W and postcontrast CISS images reveal T1 hypointense and variable T2 signal intensity in the lesion with mass effect on the brainstem and basilar artery (arrows). (D) Sagittal postcontrast T1-weighted image shows heterogeneous enhancement of the lesion.