Table 2.

Ranges of the venous tumor thrombi in 17 cases

Ranges	N (%)	Classification of pelvic tumor
Unilateral external iliac vein	2 (11.8%)	Type I+II+III *1
		Type I+II+IV *1
Unilateral internal iliac vein	1 (5.9%)	Type I+II+IV *1
Unilateral common and internal iliac veins	5 (29.4%)	Type I+IV *2
		Type I+II+IV *2
		Type I+II+III+IV*1
Unilateral common, internal and external iliac veins	2 (11.8%)	Type II+III *1
		Type I+II+III+IV*1
Inferior vena cava, unilateral common and external iliac veins	1 (5.9%)	Type II+III *1
Inferior vena cava, unilateral common and internal iliac veins	4 (23.6%)	Type 1 *1
		Type I+IV *1
		Type I+II+III+IV *2
Inferior vena cava, bilateral common and internal iliac veins	2 (11.8%)	Type I+IV *1
		Type I+II+III *1