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Suspected Artery of Percheron Infarct-Rare Case Report

Thalami and midbrain arterial supply arises from many perforating blood vessels with a complex distribution for which many variations have been described. One rare variation, named the “artery of Percheron,” is a solitary arterial trunk that arises from one of the proximal
segments of a posterior cerebral artery and supplies the paramedian thalami and the rostral midbrain bilaterally. Occlusion of this artery results in bilateral thalamic and mesencephalic infarctions. This is a 50 year old female who developed sudden altered sensorium following hypotension due to sorbitrate administration. Similar cases have been described in AJNR Am J Neuroradiol 24:2005–2008, November/December 2003. Diffusion and FLAIR images of the case have been provided showing FLAIR hyperintensity and differential bright signal on DWI.
Case Submitted by Dr Sangeeta Aneja, MD, Associate Professor & Head, Department of Radiodiagnosis, L.L.R.M. Medical College, Meerut.
Suspected Artery of Percheron Infarct-Rare Case Report Reviewed by Sumer Sethi on Saturday, September 19, 2009 Rating: 5

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