case_images: PMC5734433_01
case_images: Non-contrast coronal CT of bony defect in optic canal and opacification in right sphenoid sinus.
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case_images: Computed tomography (CT) scan of the sinuses showed near-complete opacification of the sphenoid sinus with an air fluid level, small amount of fluid in the posterior nasal cavity, and a small focal bony dehiscence of the optic canal in the superior sphenoid sinus with adjacent pneumocephalus (Figure 1). Coronal T2-weighted magnetic resonance imaging (MRI) also showed the site of leak at the optic canal in the right sphenoid and did not show encephalocele or meningoencephalocele (Figure 2).
case_images: Pre-operative coronal T2-weighted MRI showing CSF leak without meningoencephalocele from the right optic nerve canal in the right sphenoid sinus.
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case_images: Computed tomography (CT) scan of the sinuses showed near-complete opacification of the sphenoid sinus with an air fluid level, small amount of fluid in the posterior nasal cavity, and a small focal bony dehiscence of the optic canal in the superior sphenoid sinus with adjacent pneumocephalus (Figure 1). Coronal T2-weighted magnetic resonance imaging (MRI) also showed the site of leak at the optic canal in the right sphenoid and did not show encephalocele or meningoencephalocele (Figure 2).
case_images: Intraoperative endoscopic view of right sphenoid sinus with hydrodissection of sphenoid mucosa off of the bone by the CSF leak. There was no encephalocele.
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case_images: However, fluorescein was not needed due to endoscopic confirmation of the site of the leak as the optic canal in the sphenoid roof (Figures 3 and 4).
case_images: Endoscopic view of defect in optic canal in right sphenoid sinus after removal of mucosa. Small bone defect without encephalocele.
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case_images: However, fluorescein was not needed due to endoscopic confirmation of the site of the leak as the optic canal in the sphenoid roof (Figures 3 and 4).