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Table 4 Pathology results

From: Long term outcome of anastomotic leakage in patients undergoing low anterior resection for rectal cancer

N (%) Overall Population Symptomatic AL (SAL) Asymptomatic AL (AAL) Without AL (WAL) P
200 (100) 29 (14.5) 10 (5.0) 161 (80.5)
T stage, n (%)
 T0 28 (14.0) 2 (6.9) 2 (20.0) 24 (14.9) 0.460
 T1 30 (15.0) 5 (17.2) 0 25 (15.5)  
 T2 57 (28.5) 7 (24.1) 5 (50.0) 45 (27.9)  
 T3 78 (39.0) 14 (48.3) 2 (20.0) 62 (38.5)  
 T4 7 (3.5) 1 (2.9) 1 (10.0) 5 (3.1)  
N stage, n (%)
 N+ 48 (24.0) 5 (17.2) 2 (20.0) 41 (25.5) 0.594
 N0 152 (76.0) 24 (82.8) 8 (80.0) 120 (74.5)  
Pathological response, n (%)
 Absent 59 (28.5) 11 (38.0) 1 (10.0) 47 (29.2)  
 Partial 113 (56.5) 17 (58.6) 7 (70.0) 89 (55.3) 0.479
 Complete 28 (14.0) 1 (3.4) 2 (20.0) 25 (15.5)  
Lymph nodes, median ± IQR 18.0 (13.0–25.5) 18.0 (12.5–23.5) 18.5 (15.0–25.0) 17.5 (13.0–26.0) 0.593
Tumor diameter (mm), median ± IQR 25.5 (20.0–35.5) 27.5 (20.0–35.0) 30.0 (22.5–37.5) 25.0 (18.0–35.0) 0.971
Resection margins, n (%)
 Incomplete (R+) 9 (4.5) 3 (10.3) 1 (10.0) 5 (3.1)  
 Complete (R0) 191 (95.5) 26 (89.7) 9 (90.0) 156 (96.9) 0.151
  1. AL Anastomotic leak, SAL symptomatic AL, AAL asymptomatic AL and WAL without AL, IQR interquartile range