Circulating Antineutrophil Autoantibodies in a Child with Isolated Central Nervous System Vasculitis

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Abstract
An 8-year old girl with history of twisted neck and painful swelling on the left side of the neck was found to have malfunction of glossopharyngeal and hypoglossal nerves on the left side. Magnetic resonance angiography revealed a giant aneurysm of the internal carotid artery surrounded by a widespread inflammatory tumor. Cerebral angiography disclosed a large, false aneurysm with almost complete compression of the internal carotid artery. Circulating antineutrophil cytoplasmic autoantibodies (titer 1:2560) and high levels of antibodies against antiproteinase 3 were detectable. This observation indicates that these autoantibodies may be a diagnostic tool in children in whom an undiagnosed central nervous system inflammatory disease is present.

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