case_images: PMC10726560_01
case_images: MRI scan (2014) showing lesion right lateral ventricle
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case_images: F1
case_images: Magnetic resonance imaging (MRI) without gadolinium contrast of the brain and orbit showed a small incidental lesion (7x10 mm) (Figure 1 (Fig. 1)) in the right lateral ventricle (DD astrocytoma, hamartoma, subependymoma), not responsible for the right sixth nerve palsy.
case_images: MRI scan (2017) showing dural enhancement at the left cavernous sinus
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case_images: F2
case_images: An urgent MRI with gadolinium contrast was performed and described a dural enhancement (5 mm thickness, antero-posterior (AP) over 2 cm) and dural tail sign at the left cavernous sinus in contact with the left internal carotid artery as with the left optic canal (Figure 2 (Fig. 2)).
case_images: MRI scan (2014) at the level of the cavernous sinus
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case_images: F3
case_images: This new lesion was radiologically diagnosed as a meningioma and found to be explanatory for the third and fifth (V1) nerve palsy but was unable to explain the former cranial nerve palsies and had not been present at previous MRI scans, with and without gadolinium contrast (Figure 3 (Fig. 3)). 
case_images: CT (2017) of the chest and upper abdomen showing mediastinal enlarged lymph nodes
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case_images: F4
case_images: This image was suspicious of sarcoidosis (Figure 4 (Fig. 4)).
case_images: MRI (2019) at the level of the cavernous sinus
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case_images: F5
case_images: Gadolinium-enhanced MRI of the brain was conducted at six months interval and in May 2019 a decrease in the volume of the dural enhancement in the left cavernous sinus was described (Figure 5 (Fig. 5)).
case_images: MRI (2020) at the level of the cavernous sinus
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case_images: F6
case_images: The last MRI in October 2020 showed almost no visible enhancement of the dura in the left cavernous sinus, confirming it not to be a meningioma, but an inflammation compatible with dural sarcoidosis (Figure 6 (Fig. 6)).