A case of giant cell arteritis associated with suspected cerebral angiitis.

We report the case of a patient with giant cell arteritis associated with cognitive dysfunction. Magnetic resonance imaging showed areas of subcortical increased signalling, suggesting intracerebral angiitis. Steroid and heparin therapy resulted in spectacular improvement in clinical status, and MRI abnormalities regressed almost completely. Intracranial localization of giant cell arteritis and the possible association of giant cell arteritis with primary angiitis of the central nervous system are discussed.