Table 2 Number of sub-regions with PET-positive lymph nodes and number of PET-positive lymph nodes in the sub-regions

Saphenofemoral (L + R)^a

97

119

Lower inguinal (L + R)

18

22

Upper inguinal (L + R)

26

41

Lower external iliac, lateral (L + R)

1

1

Lower external iliac, medial (L + R)

30

35

Lower external iliac, middle (L + R)

2

2

Upper external iliac, lateral (L + R)

0

0

Upper external iliac, medial (L + R)

6

6

Upper external iliac, middle (L + R)

4

4

Lower internal iliac (L + R)

27

29

Upper internal iliac (L + R)

10

12

Common iliac, lateral (L + R)

8

9

Common iliac, medial (L + R)

6

6

Common iliac, middle (L + R)

3

5

Perirectal

35

77

Para-aortic, left

9

22

Para-aortic, right

3

6

Para-aortic, aortocaval

6

16