[The study of association between spontaneous intracranial hemorrhage and cerebral amyloid angiopathy].

OBJECTIVE: To get the general situation of the cerebral amyloid angiopathy (CAA) incidence in spontaneous intracranial hemorrhage (SICH) patients receiving surgical treatment in Chinese people.

METHODS: During the period May 2008 and March 2009, 105 patients admitted to 30 hospitals throughout China for acute SICH were studied, including 68 male and 37 female mean aged (55 +/- 13). The patients were suffered from SICH proved by computed tomography scan (CT). Emergent craniotomies for hemorrhage evacuation were performed for these patients within 72 h after hemorrhage onset and brain tissue of the cortex was also obtained meanwhile. A further histological study, Congo red stained and Abeta immunochemistry included was followed to verify the existence of CAA.

RESULT: Fifteen out of the 105 cases is identified as CAA positive, and the total ratio is 14.29%. As to age groups, about 20.83% (5/24) of the cases of the 40-49 years old group have been diagnosed as CAA, 17.14% (6/35) of the 50-59 years old group, 4.17% (1/24) of the 60-69 group, and for those older than 70 years, the ratio is 8.00% (2/25).

CONCLUSION: We come to the conclusion that 14.29% of the surgically treated SICH events might be closely related to CAA.