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case_images: The Left part is showing axial CT scan of the brain which shows right parietal subcortical white matter hypodensity (arrow). Right: Fig Axial CT scan of the brain shows right frontal subcortical white matter hypodensity (arrow).
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case_images: Urgent multimodal brain CT was performed and showed right frontal scalp swelling extending to the eyelids, hypodense areas in the right frontal and parietal subcortical white matter and right thalamus (Figure 1).
case_images: Axial post contrast CT angiography of the brain shows symmetrical non-enhancing right cavernous sinus (arrowhead), reduced caliber of the right internal carotid artery cavernous segment (arrow) swelling of the right temporal lobe and swelling and enhancement of the subcutaneous right temporal region as well as the orbital septum (short arrow).
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case_images: The CT angiogram of the head, which was unfortunately not optimal because of movement artifacts, showed symmetrical non-enhancing right cavernous sinus, reduced caliber of the cavernous segment of the right internal carotid artery, swelling and enhancement of the subcutaneous right temporal region and orbital septum (Figure 2).
case_images: Coronal T1 post contrast shows right intra-orbital collection (arrows).
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case_images: MRI of the head and orbit, as well as MRA and MRV, were performed and showed maxillary, frontal, and spheno-ethmoidal sinusitis complicated by right-sided facial and orbital cellulitis, right orbital subperiosteal abscess (Figure 3), right cavernous sinus and ophthalmic vein thrombosis, and occlusion of the right internal carotid artery (Figure 4).
case_images: Post processing MRA of the neck shows right internal carotid artery occlusion from the origin.
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case_images: MRI of the head and orbit, as well as MRA and MRV, were performed and showed maxillary, frontal, and spheno-ethmoidal sinusitis complicated by right-sided facial and orbital cellulitis, right orbital subperiosteal abscess (Figure 3), right cavernous sinus and ophthalmic vein thrombosis, and occlusion of the right internal carotid artery (Figure 4).