PMC8688397_01
Magnetic resonance imaging (MRI), cervical computed tomography angiography (CTA), and computed tomography (CT) of case 1. (A) The cranial MRI showed acute infarction in the territory of the right internal carotid artery. (B) CTA showed occlusion of the right external carotid artery (arrow). (C) Cross-section indicated fat emboli within the lumen of the right external carotid artery (arrow). (D) Cranial CT showed the right swelling hemisphere and incomplete skull after decompressive craniectomy.
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F1
Cranial MRI showed acute infarction in the territory of the right internal carotid artery (Figure 1A). Cervical computed tomography angiography (CTA) showed occlusion of the right external carotid artery (Figure 1B). Cross-section indicated fat emboli within the lumen of the right external carotid artery (Figure 1C). Cranial CT showed swelling of the right hemisphere and an incomplete skull after the operation (Figure 1D).
PMC8688397_02
MRI, fundus photography, and fundus fluorescence angiography of case 2. (A) Diffusion-weighted MRI showed high signal intensity in the left parietal lobe (arrow). (B) Left funduscopic examination showed an edematous optic disc and widespread retinal whitening, with multiple retinal arterioles segmentally occluded by fat emboli. The posterior pole was pale yellow. (C) Left fluorescein angiography showed blockage of the retinal arterioles and lack of perfusion of the tissue bed in hypofluorescent areas.
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F2
Diffusion-weighted magnetic resonance imaging showed high signal intensity in the left parietal lobe (Figure 2A). The posterior pole was pale yellow (Figure 2B). Left fluorescein angiography showed blockage of the retinal arterioles and a lack of perfusion of the tissue bed in hypofluorescent areas (Figure 2C).