Kosin Med J.  2021 Dec;36(2):148-152. 10.7180/kmj.2021.36.2.148.

Spontaneous Disappearance of Unruptured Intracranial Aneurysm: A Case Report

• Jeong SH
• Lee JH
• Lee TH
• Choi CH

• KMID: 2524658
• DOI: http://doi.org/10.7180/kmj.2021.36.2.148

Abstract

Spontaneous resolution or thrombosis of giant or ruptured intracranial aneurysms is occasionally reported. However, spontaneous resolution of unruptured aneurysms without any intervention is extremely rare. Recently, we encountered a case of spontaneous resolution of a small unruptured aneurysm of the anterior communicating artery. We describe this rare case and discuss the mechanism of resolution with a review of the related literature.

Keyword

Anterior communicating artery aneurysm; Intracranial aneurysm; Thrombosis

Figure

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  Fig. 1 Three-dimensional (3D) reconstruction computed tomography angiogram (CTA) shows a 6-mm sized bilobulated unruptured saccular aneurysm at the left ACoA (A). The ACoA aneurysm including neck is not seen on follow-up CTA after 30 months (B). After 40 months, digital subtraction angiography (DSA) of left internal carotid artery (ICA) with contralateral carotid artery compression and 3D reconstructed rotational angiography confirm the resolution of the ACoA aneurysm without the remnant neck and preservation of ACoA flow (C, D). DSAs of both ICA without contralateral carotid artery compression show even both A1 flow (E, F).

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