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Table 5 Clinicopathological features and tumour outcomes of patients with positive neurological invasion

From: Colon metal stents as a bridge to surgery had no significant effects on the perineural invasion: a retrospective study

 PNI(+)(n = 47)PNI(−)(n = 59)P
Age (year)a61.98 ± 10.89864.22 ± 13.6800.219
BMIa22.57 ± 2.46522.49 ± 3.2350.173
Sex (%)a  0.880
 Male28 (59.6)36 (61.0) 
 Female19 (40.4)23 (39.0) 
Tumour diametera (cm)4.45 ± 1.3644.86 ± 1.5140.572
T stage(%)b  0.466
 T316 (30.0)24 (40.7) 
 T4a27 (37.5)33 (55.9) 
 T4b4 (8.5)2 (4.4) 
N stage(%)b  0.003
 N010 (21.3)29 (49.2) 
 N120 (42.6)22 (32.3) 
 N217 (36.1)8 (13.5) 
TNM stage(%)b  0.012
 IIA5 (10.6)13 (22.0) 
 IIB5 (10.6)15 (25.4) 
 IIIB19 (40.4)24 (40.7) 
 IIIC10 (21.3)4 (6.8) 
 IV8 (17.0)3 (5.0) 
Vascular invasion (%)b  0.000
 No20 (42.6)56 (94.9) 
 Yes27 (57.4)3 (5.1) 
Total number of lymph nodesa20.87 ± 11.30122.05 ± 7.7650.211
Number of positive lymph nodesa4.23 ± 6.0051.54 ± 2.0280.001
Primary tumour site  0.728
 Left colon23 (48.9)33 (55.9) 
 Right colon15 (31.0)15 (25.4) 
 Rectum9 (19.1)11 (18.6) 
  1. at-test
  2. bChi-square test