Intracranial vascular lesions and anatomical variants all residents should know.

The purpose of this article is to extensively illustrate pathologically and clinically proven cases of intracranial vascular lesions and variants accumulated at a tertiary referral center. These are organized by normal anatomy and variants, arterial lesions, and venous lesions. High-quality computed tomography, computed tomographic angiography, magnetic resonance imaging, magnetic resonance angiography, 3D reconstruction, and angiographic figures illustrate the findings and complement a succinct review of this category of disease.