PMC7749930_01
(a) Magnetic resonance angiography showing a left saccular vertebral artery (VA) aneurysm (arrow). (b) Magnetic resonance imaging-constructive interference showing that the left side of the pons and root exit zone of the facial nerve are compressed by a VA aneurysm (arrow).
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F1
Magnetic resonance angiography (MRA) demonstrated a left saccular VA aneurysm, and the left VA was dominant [Figure 1a]. The VA aneurysm compressed the REZ of the facial nerve on magnetic resonance imaging (MRI)-constructive interference in a steady-state [Figure 1b].
Angiography showing the left posterior inferior cerebellar artery originating from the aneurysm neck (arrow). (a) Conventional image, (b) Three-dimensional rotational angiography.
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F2
A left saccular VA aneurysm with a diameter of 5.5 mm was found on angiography and the PICA arose from the aneurysm neck [Figure 2].
Postoperative angiography showing obliteration of the aneurysm, and preservation of the vertebral artery and posterior inferior cerebellar artery. (a) Conventional image, (b) Three-dimensional rotational angiography.
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F3
A platinum coil (Target 360 soft, 5 mm x 10 cm, Stryker) as the first coil was deployed in the aneurysm after the micro-balloon was placed at the aneurysm neck and inflated. A total of 12 coils were inserted serially, and the aneurysm was obliterated while preserving the PICA and parent artery [Figure 3].
Magnetic resonance angiography (MRA) showing no blood flow in the aneurysm (arrow). (a) MRA reconstructed image, (b) A raw image.
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F4
Postoperative MRA demonstrated no blood flow within the aneurysm [Figure 4].