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AJNR - American Journal of Neuroradiology

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American Journal of Neuroradiology 23:1561-1563, October 2002
© 2002 American Society of Neuroradiology

Case Report
BRAIN

Primary Angiitis of the Central Nervous System and Silent Cortical Hemorrhages

Hakan Ay^a, Gürdal ahin^a, Iil Saatci^b, Figen Söylemezolu^b and Okay Sariba^a

^a Department of Neurology, Hacettepe University Hospitals, Ankara, Turkey
^b Department of Radiology, and Pathology, Hacettepe University Hospitals, Ankara, Turkey

Address reprint requests to Hakan Ay, MD, Associate Professor of Neurology, Hacettepe Hastanesi, Nöroloji Anabilim Dali, Sihhiye 06100, Ankara, Turkey

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.

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