An anomaly in persistent right umbilical vein of portal vein diagnosed by ultrasonography

Table 1 Comparison of blood vessel diameter, blood flow velocity and volume comparison between normal persons (NP) and patients with PRPV (mean±SD).

	Patients with
	NP	PRUV	P
Vessel diameter (jmm)
Male	5.9±0.9 (n=10)	16.0±2.4 (n = 4)	<0.01
Female	6.4±1.0 (n = 10)	10.1±3.8 (n = 6)	<0.01
Total	6.1±0.9 (n = 20)	12.4±4.4 (n = 10)	<0.01
Mean velocity (cm/s)
Male	17.6±3.1 (n = 10)	16.0±3.2 (n = 4)	NS
Female	17.1±3.1 (n = 10)	18.9±3.4 (n = 6)	NS
Total	17.7±3.0 (n = 20)	17.6±4.1 (n = 10)	NS
Flow volume (L/min)
Male	0.18±0.05 (n = 10)	1.21±0.21 (n = 4)	<0.01
Female	0.21±0.06 (n = 10)	0.82±0.34 (n = 6)	<0.01
Total	0.20±0.06 (n = 20)	0.97±0.30 (n = 10)	<0.01

Note: NP, Normal group of patient; PRUV, Persistent right umbilical vein.