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Idiopathic Granulomatous Angiitis of the Central Nervous System Arch Neurol 50:925-930, Vollmer,T.L.,et al, 1993 See this aricle in Pubmed Article Abstract Analysis of these cases shows that strokes as presenting complications are rare in IGANS.Most patients present with a diffuse encephalopathy and,when focal symptoms develop,they tend to develop gradually.Including our case, 56%of 41 angiograms performed in 31 reported patients with histologically proved IGANS were abnormal,but only 27%were diagnostic for vasculitis.We conclude that stroke is uncommon as a presenting complaint in IGANS and angiography is insensitive as a screening test for these patients.

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