Coexisting Thyroid Eye Disease and Myasthenia Gravis

A case of coexisting thyroid orbitopathy and myasthenia gravis. External photographs of the eyes and eyelids, as well as images from an MRI of the orbits, are included. Figure 1 : External photograph of eyes showing right lid retraction and left upper lid ptosis. Figure 2 : External photograph of eyes in the cardinal directions of gaze illustrating diffuse bilateral ophthalmoplegia. Figure 3 : MRI orbits coronal T1 post-contrast image with fat suppression showing enlarged extraocular muscles, with particular enlargement of the right>left inferior rectus muscles. Figure 4 : MRI orbits axial T1 post-contrast image with fat suppression showing mild enlargement of the right lateral rectus and medial rectus muscles.