双语教学

Explain of CNS Pathology

8.Circle of Willis with multiple berry aneurysms, gross

The circle of Willis has been dissected, and three berry aneurysms are seen. Multiple aneurysms are seen in about 20-30% of cases of berry aneurysm. Such aneurysms are "congenital" in the sense that the defect in the arterial wall is present from birth, but the actual aneurysm takes years to develop, so that rupture is most likely to occur in young to middle age adults.

（本图片资料来源自美国犹他大学）