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Fig. 2 | Journal of Medical Case Reports

Fig. 2

From: Optic neuropathy secondary to granulomatosis with polyangiitis in a patient with Graves’ disease: a case report

Fig. 2

MRI and CT images. A shows a plain MRI image with mild enlargement of the external eye muscle in both eyes, with no findings of direct compression to the optic nerve by enlarged extraocular muscles nor stretching of the optic nerve by proptosis. B shows a coronal section of a plain head CT scan demonstrating the left ethmoid sinus filled with soft tissue and bone destructions in anterior cranial base (white arrow head). C shows contrast-enhanced MRI demonstrating the left optic nerve surrounded by enhancement (white arrow), suggesting inflammation at the optic canal. D shows a coronal section of contrast-enhanced MRI demonstrating thickened mucous membranes in the left ethmoid sinus and enhanced thicken dura of the bottom of left frontal cortex (white arrows)

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