Anatomy & Cell Biology

Table 4

Prevalence of oval veins in different patterns with mean ovality index

Group	PV	Percentage of specimens with oval veins (≥1.2)	Mean ovality index
Classical 4 PV pattern	Left superior	16.13	1.11
	Left inferior	12.90	1.12
	Right superior	25.81	1.12
	Right inferior	25.81	1.14
Additional middle right PV pattern	Left superior	40.00	1.20
	Left inferior	0	1.07
	Right superior	10.00	1.10
	Right inferior	30.00	1.16
	Additional right middle	40.00	1.19
Left common PV pattern	Common left	60.00	1.22
	Right superior	0	1.10
	Right inferior	40.00	1.15
Left common PV with additional right middle PV pattern	Common left	66.00	1.27
	Right superior	0	1.05
	Right inferior	33.00	1.16
	Additional right middle	33.00	1.30

PV, pulmonary vein.