Minesh Patel MD, Presenter: Nothing to Disclose

Anna Knobel MD, Abstract Co-Author: Nothing to Disclose

Deborah Rachelle Shatzkes MD, Abstract Co-Author: Nothing to Disclose

Review the anatomy and innervations of the extraocular muscles (EOM).  Present various pathological conditions that cause the EOMs to either increase or decrease in size. Describe the general categories of relevant disease processes, which will help approach cases in a systematic manner. Discuss patterns of involvement and other imaging features specific to some conditions that can help narrow the differential diagnosis. Emphasize the importance of correlating radiologic findings with clinical history, ancillary tests and in some cases, tissue sampling. 

1.  Introduction 2.  Anatomy and innervation 3.  Small EOMs: Etiologies:  Congenital/genetic, inflammatory, neurologic, myopathic/metabolic, autoimmune. Cases: Duane syndrome, congenital palsy/hypoplasia, cranial nerve palsies, chronic progressive external ophthalmoplegia, mitochondrial myopathy, myasthenia gravis. 4.  Large EOMs: Etiologies: Idiopathic/inflammatory, autoimmune, infectious, vascular, trauma, neoplasm. Cases: Orbital pseudotumor, sarcoidosis, Erdheim-chester disease, thyroid orbitopathy, acute invasive fungal sinusitis, ethmoid sinusitis, cavernous sinus dural AVF, SOV thrombosis, lymphagiomatosis, trauma/iatrogenic, lymphoma, metastases. 5.  Conclusion

http://abstract.rsna.org/uploads/2014/14003661/14003661_4cjc.pdf

Patel, M, Knobel, A, Shatzkes, D, Sizing Up the Extraocular Muscles: Small or Big?.  Radiological Society of North America 2014 Scientific Assembly and Annual Meeting, - ,Chicago IL. http://archive.rsna.org/2014/14003661.html