Table 4 Relation between angioarchitecture characters and incidence of complications (hematoma) among the studied cases

Size

   < 3 cm

4 (28.6)

1(33.3)

MC = 1.67

  From 3to 6 cm

5 (35.7)

0

P = 0.435

   > 6 cm

5(35.7)

2 (66.70)

Feeders

 Terminal perforator

13 (92.9)

3 (100)

FET = 0.228

 En passage

1 (7.1)

0

P = 1.0

Number of draining veins

 Single

2(14.3)

1 (33.3)

FET = 0.617

 Multiple

12 (85.7)

2 (66.7)

P = 0.465

Venous drainage

 Superficial

0

1 (33.3)

 Deep

10 (71.4)

1 (33.3)

MC = 5.24

 Mixed

4 (28.6)

1 (33.3)

P = 0.073

Aneurysm

 −ve

11 (78.3)

1 (33.3)

FET = 2.44

  + ve

3 (21.4)

2 (66.7)

P = 0.191

Fistulous

 Plexiform

12 (85.7)

3 (100)

FET = 0.486

 Mixed

2 (14.3)

0

P = 1.0

Borders

 Diffuse

5 (35.7)

2 (66.7)

FET = 0.977

 Compact

9 (64.3)

1 (33.3)

P = 0.537

Venous ectasia

 No

9 (64.3)

2 (66.7)

FET = 0.006

 Yes

5 (35.7)

1(33.3)

P = 1.0

Non-ruptured

7 (50)

1 (33.3)

FET = 0.275

Ruptured

7 (50)

2 (66.7)

P = 1.0

Spetzler and Martin

 2

4 (28.6)

1 (33.3)

 3

5 (35.7)

0

MC = 1.67

 4

5 (35.7)

2 (66.7)

P = 0.435

Eloquence

  Non-eloquent

5 (35.7)

2 (66.7)

FET = 0.977

  Eloquent

9 (64.3)

1 (33.3)

P = 0.537

Location

 Occipital

3 (21.4)

1 (33.3)

 Cerebellar

2 (14.3)

1 (33.3)

 Brain stem

1 (7.1)

0

MC = 2.67

 Occipito-parietal

2 (14.3)

1 (33.3)

P = 0.850

 Occipito-temporal

3 (21.4)

0

 Brainstem + cerebellar

1 (7.1)

0

 Pericallosal

2 (14.3)

0

Feeding artery

 SCA

2 (14.3)

1 (33.3)

MC = 1.40

 PCA

8 (57.1)

2 (66.7)

P = 0.844

 Basilar

1 (7.1)

0

 PICA

1 (7.1)

0

 Pericallosal + PCA

2 (14.3)

0