Table 1.

Summary of reported cases with V1 aneurysms

Case no.	Author (year)	Age (years)/Sex	Side	Dominancy	Location (segment)	Configuration	Size (mm)	Thrombosis	Symptoms	Ruptured or Unruptured	Endovascular Treatment	Followup Period	Outcome	Etiology
1	Hiramatsu et al. (2007)[12]	67/M	Left	Left	V1	Saccular	20×20	NR	Dizziness	Unruptured	BTO→Trapping	6 weeks	GR	NF-1
2	Shang et al. (2013)[13]	26/M	Right	NR	V1	Saccular	40	NR	Arm and chest pain, arm paresthesias, pulsatile nontender mass	Unruptured	PAO (proximal VA) Covered stent (subclavian artery)	1 month	GR	Unclear
3	Kollmann et al. (2016)[6]	48/F	Left	NR	V1	Saccular	11×10	NR	Massive hematoma of neck	Ruptured	Embolization (Coil and Onyx)	1 year	GR	NR
4	Kiyohira et al. (2017)[7]	59/F	Left	NR	V1	Saccular	42×38×48	Yes (Partially)	Swelling	Unruptured	BTO→PAO (proximal VA)	2 years	GR	NR
5	Strambo et al. (2017)[9]	53/M	Left	NR	V1	Fusiform	40	Yes (Eccentric)	Dysarthria, right side paresthesias, left limb ataxia	Unruptured	PAO (proximal VA)→Ligation of distal left VA (6 years after PAO)	6 years (After PAO) 2 years (After ligation)	NR	NF-1
6	Zhang et al. (2018)[10]	57/F	Left	Codominant	V1	Fusiform	18×15.4	NR	No symptoms	Unruptured	Aneurysm resection, vascular graft reconstruction	6 months	GR	NR
7	Fuga et al. (2021)[3]	68/F	Left	Right	V1-V2	Saccular	47×58×47	Yes (Partially)	Swelling and neck pain	Unruptured	Coil embolization	1 year	GR	Idiopathic
8	Pataki et al. (2022)[1]	74/M	Right	Right	V1	Fusiform	55×57	Yes (Partially)	No symptoms	Unruptured	Stent grafts	3 years	GR	Idiopathic
9	Topaloğlu et al. (2023)[14]	35/F	Right	NR	V1	Saccular	75×65	NR	Neck pain	Unruptured	Antiplatelet and immunosuppressive therapy	NR	NR	Behçet’s disease
10	Present case	85/F	Right	Left	V1	Saccular	30	No	Dizziness	Unruptured	Coil embolization	3 months	GR	Idiopathic

BTO: balloon test occlusion, F: female, GR: good recovery, M: male, NF-1: neurofibromatosis type 1, NR: not reported, PAO: parent artery occlusion, VA: vertebral artery