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Open Access Publications from the University of California

A Rare Case of Watershed Strokes: Hypereosinophilic Syndrome


Watershed infarcts are a stroke subtype usually secondary to vascular stenosis with superimposed hypotension, leading to border zone hypoperfusion.  Therefore, usual implicated pathologies include atherosclerosis, congestive heart failure, hypotension, angiitis, and less commonly, sickle cell disease.  In this report, we present an extremely rare cause of diffuse watershed infarcts: hypereosinophilia.  Hypereosinophilic syndrome (HES) is an extremely rare cause of neurological disorders. We discuss the definition of HES, causes of HES, and its neuroradiological manifestations.

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