Table 2 pN stage and number of collected and positive lymph nodes

From: Methylene blue injection into the rectal artery as a simple method to improve lymph node harvest in rectal cancer

Case

Methylene group pN

Methylene group Number of nodes (total positive nodes/micrometases)

Unstained group pN

Unstained group Number of nodes (total positive nodes/micrometases)

1

0

18

2

24 (8/2)

2

(y) 0

18

(y) 1

15 (1/1)a

3

(y) 2

18 (5/0)

0

11a

4

(y) 0

19

(y) 0

17

5

1

32 (3/1)

(y) 0

18

6

0

39

2

12 (9/3)

7

(y) 0

28

(y) 0

15

8

0

21

0

14b

9

2

31 (5/0)

(y) 0

11b

10

2

31 (7/0)

1

11 (1/1)

11

1

32 (1/0)

(y) 0

13a

12

(y) 0

31

0

11a

Total

 

319 (21/1)

 

173 (19/7)

  1. (y)=neoadjuvant radiation.
  2. aAdditional embedding of fat.
  3. bSecondary embedding of additional fat.