Histopathologic study of extraocular muscles in thyroid-associated ophthalmopathy coexisting with ocular myasthenia gravis: a case report

摘要

Case presentation (TAO with OMG). A 32-year-old male complaint of bilateral proptosis for 2 years. Physical examination revealed slight ptosis of the left upper eyelid and mild retraction of the right upper eyelid. The patient reported a medical history of OMG, and the unnatural crease of the right eyelid resulted from previous blepharoplasty to correct ptosis. The CT scan showed bilateral enlargement of the medial rectus muscles. Orbital decompression partially relieved the right upper eyelid retraction but resulted in new onset of left upper eyelid retraction due to increased motor impulses to sustain eyelid elevation. The CT scan showed balanced two-wall decompression in both orbits