目的:对一例临床诊断为伴皮质下梗死和白质脑病的常染色体显性遗传性脑动脉病(cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy, CADASIL, OMIM#125310)的学龄期男童及其家系成员的临床资料进行整理、分析,以期丰富该病临床资料。方法:收集2023年青岛大学附属医院儿童神经内科临床诊断为CADASIL的一例患者及其家系成员的临床及影像学资料,并采用二代高通量测序(NGS)对先证者进行检测。结果:先证者为8岁学龄期男童,有头痛病史、颅脑MRI显示白质异常信号,其姐姐、父亲均有头痛病史及脑白质异常信号且其父亲有脑萎缩表现。先证者全外显子检测未发现NOCH3及HTRIA基因变异。结论:对有明确家族史的偏头痛样发作患儿,且颅脑MRI显示颞极或外囊白质异常信号,要警惕CADASIL,需进行基因检测和(或)皮肤活检,如二者均未发现异常,可诊断为类CADASIL (CACASIL-Like)病,应定期进行随访、追踪,寻找潜在的病因。Objective: We organized and analyzed the clinical data of a school-age boy and his family members who were clinically diagnosed with cerebral autosomal dominant arteriopathy with subcortical infarction and leukoencephalopathy (CADASIL, OMIM#125310), to provide a scientific basis for the diagnosis of CADASIL. Methods: The clinical and brain MRI data of patient and his family members who were clinically diagnosed as CADASIL by the Pediatric Neurology of the Affiliated Hospital of Qingdao University in 2023 were collected, and the proband was detected by next-generation sequencing (NGS). Results: The proband was an 8-year-old schoolboy with a history of migraine, and brain MRI revealed T2 white matter hyperintensity (WMHs). His sister and father had a history of migraine and significant white matter hyperintensities on brain MRI, and his father had brain atrophy. No variants were found in NOCH3 and HTRIA genes in the proband by whole exon sequencing. Conclusion: Fo
