An aneurysm of the medial posterior choroidal artery: a case report and a literature review

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Introduction. Aneurysms of the medial posterior choroidal artery are very rare. To date, only 5 cases have been reported. The article presents a case of successful surgical treatment of an aneurysm of the medial posterior choroidal artery and a literature review. Clinical case. A 57-year-old male was admitted to the Center 1 month after a massive subarachnoid hemorrhage. CT angiography revealed an aneurysm of the right posterior medial choroidal artery in the perimesencephalic cistern and resolved hemorrhage. Treatment. The paramedian supracerebellar transtentorial approach to the lateral surface of the midbrain was used. The posterior cerebral artery was identified in the perimesencephalic cistern, and the medial posterior choroidal artery aneurysm was isolated and successfully clipped, with the parent artery being preserved. Postoperative CT and MRI scans revealed a small asymptomatic ischemic lesion in the tectal region on the right. The patient was discharged without any neurological symptoms 10 days after surgery. Conclusion. Medial posterior choroidal artery aneurysms can be clipped using the paramedian supracerebellar transtentorial approach.

Keywords:

medial posterior choroidal artery

aneurysm

supracerebellar transtentorial approach

mesencephalic infarction

Authors:

Grigoryan Yu.A.

Federal Center of Medicine and Rehabilitation of the Ministry of Health of the Russian Federation, Moscow, Russia

Sitnikov A.R.

Federal Center of Medicine and Rehabilitation of the Ministry of Health of the Russian Federation, Moscow, Russia

Timoshenkov A.V.

Federal Center of Treatment and Rehabilitation, Moscow, Russia

Grigoryan G.Yu.

Federal Center of Medicine and Rehabilitation of the Ministry of Health of the Russian Federation, Moscow, Russia

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