A Case of Flow Diverter Placement for a Recurrent Large Thrombosed Middle Cerebral Artery Aneurysm.

Journal of neuroendovascular therapy Pub Date : 2025-01-01 Epub Date: 2025-01-31 DOI:10.5797/jnet.cr.2024-0088

Yusuke Tanaka, Masato Tsuchimochi, Raisa Funatsuya, Noriaki Sekiguchi, Naoyuki Noda, Koji Suzuki, Yasuhiro Uriu, Shin Tanino, Kosuke Miyahara

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Abstract

Objective: There are only a few reports about flow diverter (FD) placement for large thrombosed aneurysms of the middle cerebral artery (MCA). We present a case of FD placement for a recurrent large thrombosed aneurysm of MCA at our hospital.

Case presentation: A 72-year-old man with transient visual field disturbance underwent craniotomy for a large aneurysm in the left MCA; dome clipping was performed because of severe arteriosclerosis. Over several years, the residual aneurysm gradually increased in size, and despite antiplatelet therapy, the patient experienced repeated cerebral infarctions due to intra-aneurysmal thrombosis. A closer examination revealed that the M2 superior trunk was occluded. Thus, we performed FD placement, without further complications. After 6 months, the aneurysm was confirmed to be occluded with an O'Kelly-Marotta grading scale (OKM grade) of D. There was no enlargement of the thrombus inside the aneurysm, and the patient is currently under follow-up observation.

Conclusion: FD placement may be an option for large thrombosed aneurysms of MCA that are difficult to treat with conventional methods.

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