PT - JOURNAL ARTICLE AU - Ay, Hakan AU - Şahin, Gürdal AU - Saatci, Işıl AU - Söylemezoğlu, Figen AU - Sarıbaş, Okay TI - Primary Angiitis of the Central Nervous System and Silent Cortical Hemorrhages DP - 2002 Oct 01 TA - American Journal of Neuroradiology PG - 1561--1563 VI - 23 IP - 9 4099 - http://www.ajnr.org/content/23/9/1561.short 4100 - http://www.ajnr.org/content/23/9/1561.full SO - Am. J. Neuroradiol.2002 Oct 01; 23 AB - Summary: Primary angiitis of the CNS is histopathologically characterized by ischemic lesions and small petechial hemorrhages. Unlike CT or conventional MR imaging, gradient-echo MR imaging depicts these chronic petechial hemorrhages. We herein report the case of biopsy-proved primary angiitis of the CNS in a 42-year-old man; whom gradient-echo MR imaging revealed multiple petechial hemorrhages in the cortical-subcortical brain regions. The identification of petechial hemorrhages by gradient-echo MR imaging promises to be a valuable surrogate marker supporting the diagnosis of primary angiitis of the CNS.