Intracranial aneurysms due to congenital weakness of the arterial wall occur chiefly at the base of the brain on the vessels forming part of the circle of Willis, or on closely adjacent arterial trunks. There is a marked tendency for such aneurysms to develop at the site of vascular bifurcation or branching. At these sites congenital defects of the elastic and muscular elements of the arterial wall occur. The aneurysms are occasionally multiple in the same individual. They show great variations in size but the majority are small, like a "minute berry growing from a stem."1 The occurrence of this
SURGICAL THERAPY IN CONGENITAL INTRACRANIAL ANEURYSMS. Ann Intern Med. ;12:1386–1390. doi: 10.7326/0003-4819-12-8-1386_2
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Published: Ann Intern Med. 1939;12(8):1386-1390.
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