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Asymmetry of the cavernous sinuses in steroid-responsive cavernous sinus syndrome due to Rosai-Dorfman disease

T1-weighted MRI in a man with a steroid-responsive cavernous sinus syndrome due to Rosai-Dorfman disease. There is asymmetry of the cavernous sinuses, with the left cavernous sinus larger than the right, and contrast enhancement of the left cavernous sinus (right).

(Source: Nóbrega PR, Rodrigues PG, de Sousa Pereira I, et al. Steroid responsive cavernous sinus syndrome due to Rosai-Dorfman disease: beyond Tolosa-Hunt syndrome--a case report. BMC Neurol 2021;21[1]:264 Creative Commons Attribution 4.0 International [CC BY 4.0] license, creativecommons.org/licenses/by/4.0.)