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Table 1 Patients’ characteristics

From: Transanal down-to-up dissection of the distal rectum as a viable approach to achieve total mesorectal excision in laparoscopic sphincter-preserving surgery for rectal cancer near the anus: a study of short- and long-term outcomes of 123 consecutive patients from a single Japanese institution

 

Total (N=123)

TARD (n = 50)

TaTME (n = 73)

P value

Sex, n (%)

   

0.024

 Male

83 (67.5)

28 (56.0)

55 (75.3)

 

 Female

40 (32.5)

22 (44.0)

18 (24.7)

 

Agea

66 (33–86)

63.5 (33–77)

66 (41–86)

0.298

Body mass indexa

21.9 (16.7–41.8)

21.5 (16.7–37.2)

22.5 (16.8–41.8)

0.376

Preoperative treatment, n (%)

   

1.000

 Positive

40 (32.5)

16 (32.0)

24 (32.9)

 

  CRT

29 (23.6)

16 (32.0)

13 (17.8)

 

  NAC

11 (8.9)

0 (0.0)

11 (15.1)

 

 Negative

83 (67.5)

34 (68.0)

49 (67.1)

 

Resection of the AIS

    

 ISR

48 (39.0)

29 (58.0)

19 (26.0)

<0.001

 Ultra-LAR with CAA

75 (61.0)

21 (42.0)

54 (74.0)

 

Tumor related factor

    

 T, n (%)

   

0.299

  1b

21 (17.0)

10 (20.0)

11 (15.1)

 

  2

38 (30.9)

14 (28.0)

24 (32.9)

 

  3

54 (43.9)

23 (46.0)

31 (42.5)

 

  4a

5 (4.1)

0 (0.0)

5 (6.8)

 

  pCR

5 (4.1)

3 (6.0)

2 (2.7)

 

 N, n (%)

   

1.000

  Positive

33 (26.8)

13 (26.0)

20 (27.4)

 

  Negative

90 (73.2)

37 (74.0)

53 (72.6)

 

 M, n (%)

   

1.000

  Positive

2 (1.6)

1 (2.0)

1 (1.4)

 

  Negative

121 (98.4)

49 (98.0)

72 (98.6)

 

 pStage, n (%)

   

0.874

  I

52 (42.3)

22 (44.0)

30 (41.1)

 

  II

33 (26.8)

12 (24.0)

21 (28.8)

 

  III

31 (25.2)

12 (24.0)

19 (26.0)

 

  IV

2 (1.6.)

1 (2.0)

1 (1.4)

 

  pCR

5 (4.1)

3 (6.0)

2 (2.7)

 
  1. CRT chemoradiation therapy, NAC neoadjuvant chemotherapy, AIS the anal internal sphincter muscle, CAA coloanal anastomosis, pCR pathological complete response, TARD transanal rectal dissection, TaTME transanal total mesorectal excision
  2. a Median (range)