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Table 2 Pathologic features and oncologic outcomes

From: Favorable short-term oncologic outcomes following laparoscopic surgery for small T4 colon cancer: a multicenter comparative study

Variable Open (N = 149) Laparoscopy (N = 300) p value
Tumor size (cm) 6 (2–30) 5.2 (0.9–14.5) < .001a
Node state N0 53 (35.6) 85 (28.3) 0.118b
N+ 96 (64.4) 215 (71.7)
T stage T4a 85 (57.0) 248 (82.7) < .001b
T4b 64 (43.0) 52 (17.3)
Angiolymphatic invasion Not identified 85 (57.0) 78 (26.0) < .001b
Present 64 (43.0) 222 (74.0)
Venous invasion Not identified 97 (65.1) 150 (50.0) 0.003b
Present 52 (34.9) 150 (50.0)
Perineural invasion Not identified 56 (37.6) 66 (22.0) 0.001b
Present 93 (62.4) 234 (78.0)
Combined resection No 107 (71.8) 282 (94.0) < .001b
Yes 42 (28.2) 18 (6.0)
R0 resection rate 140 (94) 292 (97.3) 0.078b
Harvested lymph nodes N = 298 29 (5–117) 29 (7–244) 0.677a
Proximal margin N = 447 14 (0.5–174) 10.7 (1.5–119.8) 0.004a
Distal margin 8 (0–125.5) 8.3 (0.4–101) 0.532a
Radial margin N = 100 0.4 (0–8.5) 0.4 (0–4) 0.895a
  1. aWilcoxon rank sum test
  2. bChi-square test
  3. Data are expressed as median (range) for continuous variables and as number (percentage) for categorical variables