Objective:To investigate the clinical and imaging features of cerebral amyloid angiopathy(CAA)with acute convexity subarachnoid hemorrhage(cSAH)as the imaging characteristic,as well as its association with the risk of recurrent brain hemorrhage in patients.Methods:A retrospective analysis was performed on 18 probable CAA patients with cSAH as the imaging feature who met the modified Boston diagnostic criteria and were treated at Beijing Anzhen Hospital from June 2013 to December 2020.Epidemiological data,clinical characteristics,and information on head computed tomography(CT)/head magnetic resonance imaging(MRI)were analyzed.Results:The male-to-female ratio of the 18 patients was 1∶1.25,with an onset age of 59-91,mean age(75±9)years.The most common clinical symptom was transient focal neurological episodes(TFNE)in 12 out of 18 patients.The head imaging findings showed localized(14/18)and diffuse cSAH(4/18).During a follow-up of 15 months(mean),8 patients experienced recurrent TFNE,4 had recurrent cSAH,and 4 had brain hemorrhage.Conclusions:CAA with cSAH as the imaging feature is more common in elderly individuals,and TFNE is the most common clinical manifestation.Head CT/MRI is the most important diagnostic method,and antiplatelet therapy should be avoided if possible.
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