Cerebral aneurysm classification

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

Overview

Cerebral aneurysms can be classified either by size or type.

Classification

Cerebral aneurysms can be classified either by size or type.

Classifying by size

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

Classifying by type

  1. 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.
  2. Fusiform aneurysms are aneurysms without stems.

References