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Endocarditis. A, Axial brain CT scan shows an isolated slight right frontal subarachnoid hyperattenuation. B, Because of clinical aggravation the next day, another brain CT was performed and demonstrated a larger right Sylvian SAH. Subsequent MR imaging showed a right middle cerebral artery infarction due to M1 occlusion (not shown), which precluded the exact identification of this SAH origin.
