A Case of Unilateral Exophthalmos Caused by a Dural Arteriovenous Malformation in Thyroid-Associated Ophthalmopathy
2008
Thyroid-associated ophthalmopathy is associated with thyroid dysfunction, particularly Graves' disease, and is manifested as eye signs, including proptosis. In cases of unilateral exophthalmos with thyroid-associated ophthalmopathy, other causes such as orbital neoplasm, carotid-cavernous fistula, cavernous sinus thrombosis, and dural arteriovenous malformation (AVM) should be excluded. Dural AVM, an abnormal dural arteriovenous connection, is a rare neurovascular entity that mimics thyroid-associated ophthalmopathy. When eye involvement is unilateral or asymmetric, dural AVM can be considered in the differential diagnosis of thyroid-associated ophthalmopathy. A twenty-six year-old woman presented with unilateral exophthalmos in Graves' disease. By orbital magnetic resonance imaging and cerebral angiography, thyroid-associated ophthalmopathy and dural AVM were diagnosed. The unilateral exophthalmos improved after coil embolization of the dural AVM. In summary, we report the first case of a dur al AVM with Graves' disease and thyroid-associated ophthalmopathy. (J Kor Endocr Soc 23:51~55, 2008)
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