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J Stroke. 2016 Jan;18(1):38-49. doi: 10.5853/jos.2015.01410. Epub 2015 Oct 15.

Silent New Brain Lesions: Innocent Bystander or Guilty Party?

Author information

1
Department of Neurology, Asan Medical Center, University of Ulsan, College of Medicine, Seoul, Korea.
2
Department of Neurology, Dell Medical School, University of Texas at Austin, Austin, TX, USA.

Abstract

With the advances in magnetic resonance imaging, previously unrecognized small brain lesions, which are mostly asymptomatic, have been increasingly detected. Diffusion-weighted imaging can identify small ischemic strokes, while gradient echo T2* imaging and susceptibility-weighted imaging can reveal tiny hemorrhagic strokes (microbleeds). In this article, we review silent brain lesions appearing soon after acute stroke events, including silent new ischemic lesions and microbleeds appearing 1) after acute ischemic stroke and 2) after acute intracerebral hemorrhage. Moreover, we briefly discuss the clinical implications of these silent new brain lesions.

KEYWORDS:

New ischemic lesions; New microbleeds; Silent brain lesions

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