Items

Details

Numbers

Chi-square

P value

Collateral originating site (n = 35)

Distal RSVC

1

33.497

<0.001

Middle RSVC

4

Proximal RSVC

3

Distal LSVC

12

Middle LSVC

14

Proximal LSVC

1

Collateral draining pathway (n = 39)

Azygous venous system

(4) 5

31.827

<0.001

Paravertebral venous plexus

(1) 1

Pericardiophrenic vein

(9) 12

Mediastinal venous rete

(1) 1

Internal thoracic vein

(9) 12

Superior intercostal vein

(1) 1

Cervical venous plexus

(4) 5

coronary sinus

(1) 2

Collateral size (n = 39)

≤1mm

(6) 9

32.103

<0.001

2 - 7 mm

(17) 22

≥8 mm

(6) 7

venous plexus

(1) 1