False positive angiographic aneurysm of the anterior segment of the M1 bifurcation of the middle cerebral artery: a case report

被引:2
作者
Xiao, Wen [1 ]
Hou, Xiaolin [2 ]
Li, Dingjun [3 ]
Yang, Dongdong [1 ]
机构
[1] Hosp Chengdu Univ Tradit Chinese Med, Dept Neurol, Chengdu, Peoples R China
[2] Univ Elect Sci & Technol China, Sichuan Prov Peoples Hosp, Dept Neurosurg, Chengdu, Peoples R China
[3] Hosp Chengdu Univ Tradit Chinese Med, Dept Neurosurg, Chengdu, Peoples R China
来源
FRONTIERS IN NEUROLOGY | 2023年 / 14卷
关键词
middle cerebral artery (MCA); occluded stump; false-positive aneurysm; CTA; MRA; DSA; INTRACRANIAL ANEURYSMS; MIMICKING; OCCLUSION;
D O I
10.3389/fneur.2023.1327878
中图分类号
R74 [神经病学与精神病学];
学科分类号
摘要
Occlusion of an intracranial arterial branch, resulting in a false positive aneurysm on vascular imaging, is extremely rare, with only a few reports in the literature and mostly in the posterior circulation artery or the middle cerebral artery (MCA) bifurcation. We report a case of a 69 years-old woman with a subacute infarct lesion in the left frontal lobe, for whom both computed tomographic angiography (CTA) and digital subtraction angiography (DSA) of the cerebral vessels showed aneurysms in the anterior segment of the M1 bifurcation of the middle cerebral artery (MCA) and in the bifurcation of the MCA. The aneurysm in the MCA bifurcation was found during craniotomy, whereas the anterior segment of the M1 bifurcation had intact branch vessels with severe atherosclerosis and no aneurysm was present. The branch vessel of M1 was presumed to be atherosclerotic occlusion resulting in the distal vessels without contrast filling on CTA and DSA, and only the occluded stump at the beginning of the vessel was filled with contrast, showing an aneurysm-like morphology, which was very confusing. This case highlights to neurologists that the diagnosis of aneurysm by cerebrovascular CTA or DSA must be carefully differentiated to avoid misdiagnosis, especially if the unruptured aneurysm is in an uncommon location in combination with ischemic cerebrovascular disease.
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页数:4
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