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. 2023 Jul 28;14:263. doi: 10.25259/SNI_344_2023

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Copyright: © 2023 Surgical Neurology International

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Figure 4: — Intraoperative findings. (a) A hard bony process is seen (arrow) attached on the surface of the dura matter along the middle meningeal artery. (b) A small laceration on the superior wall of the M2 superior trunk is observed, indicating pseudoaneurysm (arrow). (c) Trapping of the laceration point with preservation of antegrade blood flow from M1 to the M2 inferior trunk assisted by superficial temporal artery-M2 (superior trunk) bypass, despite the mild stenosis of the origin of the M2 inferior trunk. (d) Indocyanine green video angiography image showing perfect patency of the superficial temporal artery-M2 bypass, antegraded blood flow from M1 to the M2 inferior trunk and complete obliteration of the laceration on the M2 superior trunk.