![]() ○ Crohn disease and inflammatory bowel syndrome ○ Immunoglobulin G4 (IgG4) related disease ○ Idiopathic orbital inflammation with myositis (inflammatory orbital pseudotumor) lateral rectus muscles.ĭifferential Diagnosis of Enlarged Extraocular MusclesĮnlarged ocular muscles may result most commonly from the following: The inferior rectus causing restricted upgaze. What does the development of lid retraction in a patient with Myasthenia suggest?ĭisconjugate horizontal eye movements suggest a 6th nerve palsy, internuclear ophthalmoplegia, or 3rd nerve palsy. ![]() What are the side effects of the Tensilon test?Ĥ7. What is the mechanism of action of edrophonium?Ĥ6. What may induce myasthenia gravis or make it worse?Ĥ5. What 3 conditions other than paresis or restriction should be considered in any adult with new-onset transient or permanent ocular misalignment?Ĥ4. What are 5 features of Oculopharyngeal Dystrophy?Ĥ3. What are the features of Myotonic Dystrophy?Ĥ2. What are 5 mitochondrial diseases that can have ophthalmoplegia?Ĥ1. What tests should be done in all patients over age 50 with transient or permanent diplopia?Ĥ0. When should a biopsy be done in a patient with presumed “myositis”ģ7. ![]() What 4 features differentiate idiopathic orbital inflammation (orbital pseudotumor) from thyroid eye disease?ģ6. On CT or MRI, which condition spares the insertions of the extraocular muscles, thyroid eye disease or idiopathic orbital inflammation (orbital pseudotumor)?ģ5. What is the differential diagnosis of enlarged extraocular muscles?ģ4. Which is the most commonly involved extraocular muscle in thyroid eye disease?ģ3. What is the most common cause of bilateral proptosis?ģ2. What is the most common cause of unilateral proptosis?ģ1. In a comatose patient, you observe dysconjugate horizontal eye movements when the head is rotated from side to side. ![]()
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