. 2019 Sep 24;2(3):123–127. doi: 10.1016/j.jimed.2019.09.012

Table 2.

General clinical characteristics and computed tomography (CT) features of iliac vein compression syndrome (IVCS).

IVCS group	Age of onset	Lower extremity swelling period (days)	Thrombus density(Hu)	IVTD (mm)	Iliac vein compression position				Embolization ranges
IVCS group	Age of onset	Lower extremity swelling period (days)	Thrombus density(Hu)	IVTD (mm)	L4/5 front	L5 left front	L5 straight front	L5 right front	Iliac vein only	Femoral vein involved	Popliteal vein involved
sIVCS	42.3 ± 6.5	12.1 ± 9.2	14.30 ± 6.60	2.50 ± 0.50	4	0	4	14	0	6	16
dIVCS	61.5 ± 10.6	22.5 ± 7.6	18.40 ± 6.10	2.30 ± 0.50	9	3	18	3	6	10	17
oIVCS	53.1 ± 16.8	6.8 ± 6.7	11.60 ± 9.50	5.90 ± 2.30	0	0	0	0	4	6	4
F(χ²) P	11.03 <0.01	7.81 <0.01	1.96, 0.16	125.27 <0.01	19.31 <0.01^a				--, 0.03^b

Using χ2 test.

Using the Fisher exact algorithm.