Page 22 - tmp

Laparoscopic Intersphincteric Resection
Table 1: Clinical and surgical characteristics
Characteristics Frequency Percentage
Age (year), mean (SD) 68.7 ± 13.3
Gender, male 27 62.8
Tumor-anal margin distance
5–6 cm—(N1) 16 37.2
4–<5 cm—(N2) 23 53.5
<4 cm—(N3) 4 9.3
Invasiveness
T1 6 14.0
T2 26 60.5
T3 11 25.5
TNM classification
I 10 23.3
II 16 37.2
III 17 39.5 Fig. 1: Survival probability of low rectal cancer patients after surgery
IV 0 0.0
Surgical method
Partial intersphincteric resection 13 30.2
Subtotal intersphincteric resection 16 37.2
Total intersphincteric resection 14 32.6
Colon shaping
None 13 30.2
J-shape 22 51.2
Side-to-end 8 18.6

Table 2: Functional results according to Kirwan classification and Wexner
score before and after surgery
Preoperative Postoperative
Characteristics n % n % p value
Kirwan classification
I. Perfect 36 83.7 27 62.9 0.02
II. Incontinence 7 16.3 10 23.2
to gas Fig. 2: Survival probability of low rectal cancer patients by TNM stages
III. Occasional 0 0.0 6 13.9
minor leak
Wexner score
<5 27 62.8 21 48.8 0.09
5–10 16 37.2 18 41.9
10–20 0 0.0 4 9.3

difference in the Wexner score between before and after surgery
was not statistically significant (p >0.05).
Figure 1 shows that the mean survival time of the patient was
41.53 ± 2.37 months, the cumulative probability of survival at
48 months was 78.8%.
The mean survival time of patients in stages I, II, and III was
43.4 ± 4.2, 41.9 ± 3.8, and 41.2 ± 3.4 months, respectively. The
probability of survival at 48 months according to stages I, II,
and III was 85.7, 80.0, and 77.9%, respectively. The log-rank test
showed no difference in disease stage and duration of survival
(Fig. 2).
Comparing between groups with colon shaping (value = 1)
and without colon shaping (value = 0), the log-rank test showed no Fig. 3: Survival probability of low rectal cancer patients after surgery
difference in survival time between the two groups (p >0.05) (Fig. 3). according to colon shaping characteristics

164 World Journal of Laparoscopic Surgery, Volume 14 Issue 3 (September–December 2021)