Table 1 Summary of reported distal lenticulostriate artery aneurysm cases in the English literature

Case No	Author (Year),	Age (y)/ sex	Pre-existing hypertension	Imaging findings	Associated disease	Size (mm)	Angiographic location	Treatment modalities	Pathology of aneurysm	Outcome
1	Okuma (1980)3	29/F	―	NA	Moyamoya	―	―	Conservative	―	GR
2	Ohta (1980)4	26/F	―	ICH, IVH	AVM	―	―	Surgical excision	True	VS
3	Murakami (1984)5	33/M	―	ICH, IVH	Moyamoy-like	5	Lateral LSA	Conservative	True	Death
4	Kidoguchi (1987)6	24/F	―	ICH, SAH	SLE	3	―	Surgical excision	True	Death
5	Gupta (1989)7	36/F	No	ICH	―	Multiple	Lateral LSA	Conservative	―	GR
6	Petrela (1992)8	27/M	―	ICH, IVH	―	―	―	Neck clipping	―	MD
7	Grabel (1989)9	60/M	No	ICH	Moyamoya-like	5	Lateral LSA	Conservative	―	MD
8	Oka (1991)10	44/F	Yes	ICH, SAH	―	4	Lateral LSA	Removal of ICH only	―	GR
9	Endo (1996)11	12/F	―	ICH, IVH	―	―	―	Proximal clipping	―	GR
10	Kaptain (2001)12	2 mo/M	―	ICH, IVH	―	15	No demonstration	Surgical excision	True	MD
11	Larrazabal (2001)13	57/F	―	ICH, IVH	Moyamoya-like	4	Lateral LSA	Endovascular embolisation	―	MD
12	Vates (2001)14	35/M	No	IVH	Neurocytoma	7	Lateral LSA	Surgical excision	True	MD
13	Maeda (2001)15	62/F	Yes	ICH, IVH, SAH	―	5	Lateral LSA	Surgical excision	True	MD
14	Narayan (2004)16	69/F	No	ICH, IVH	―	5	Lateral LSA	Proximal clipping	―	GR
15	Horn (2004)17	44/F	No	ICH	―	2	Lateral LSA	Neck clipping and coating	―	GR
16	Sakai (2005)18	61/M	No	ICH	Moyamoya-like	4	Lateral LSA	Neck clipping	―	MD
17	Present case 1 (fig 1A)	49/M	No	ICH, IVH	Moyamoya-like	3	Lateral LSA	Surgical excision	True	GR
18	Present case 2 (fig 1B)	24/M	No	ICH, IVH, SAH	―	4	Lateral LSA	Conservative	―	Death

AVM, arteriovenous malformation; GR, good recovery; ICH, intracerebral haemorrhage; IVH, intraventricular haemorrhage; LSA, lenticulostriate artery; MD, moderate disability; NA, not available; SAH, subarachnoid haemorrhage; SLE, systemic lupus erythematosus; VS, vegetative state.