A Case of Recurrent Cerebral Hemorrhage Considered to be Cerebral Amyloid Angiopathy by Cerebrospinal Fluid Examination.

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A 73-year-old man was admitted with gait disturbance and dysarthria. He showed right-side cerebellar ataxia. Computed tomography of brain showed left thalamic bleeding. Nine months later, he was admitted again because of siezure and consciousness disturbance. He had a history of diabetes mellitus and gout for five years, but no hypertension. On physical examination the lungs and heart were normal. On neurological examination, he showed stupor. pupils and eye position were normal. He showed right hemiparesis and urinary incontinence. The deep tendon reflexes were (+) at the upper limbs and (++) at the right knee and ankle. Blood pressure was 162/88mmHg and glucose was 275mg/dl. Other laboratory data were normal. Brain CT showed hemorrhage of the left frontal lobe. The cystatin C level in cerebrospinal fluid was 68ng/ml. Therefore we suspected cystatin C deposit amyloid angiopathy. In this case, thalamic hemorrhage was initially thought to be amyloid angiopathy. In cases of cerebral hemorrhage in the elderly without hypertension, we must be considered amyloid angiopathy.
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