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Key Points There are a variety of specific but relatively uncommon causes of stroke, many of which have unique treatment implications. For most uncommon causes of stroke, there are few data from randomized trials, and treatment is based largely on…
Key Points In a percentage of patients, a defined etiology of ischemic stroke is not identified. These patients are categorized as cryptogenic (unknown cause) ischemic stroke. The estimated percentage of ischemic strokes that are cryptogenic varies from 15% to 35%,…