Cerebral aneurysm classification

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] ;Associate Editor(s)-in-Chief: Anika Zahoor M.D.[2]

Cerebral aneurysms can be classified either by size or type.

Cerebral aneurysms can be classified either by size or type.

• Small aneurysms have a diameter of less than 15mm.
• Larger aneurysms include those classified as large (15 to 25mm)
• Giant (25 to 50mm)
• Super giant (over 50mm)

• Saccular aneurysms are those with a saccular outpouching and are the most common form of cerebral aneurysm.
• Berry aneurysms are saccular aneurysms with necks or stems resembling a berry.
• Fusiform aneurysms are aneurysms without stems.

1. Pritz MB. Cerebral aneurysm classification based on angioarchitecture. Journal of Stroke and Cerebrovascular Diseases. 2011 Mar 1;20(2):162-7.