Table 2 Surgical treatment and pathological report for colon (n = 767) and rectal (n = 340) cancer patients receiving surgery in the study of surgery and care patterns for colorectal cancer (n = 1107)
Colon | Rectal | |||
|---|---|---|---|---|
N | (%) | N | (%) | |
Mode of operation | ||||
Emergency | 134 | (18) | 12 | (4) |
Scheduled | 617 | (80) | 325 | (95) |
Missing | 16 | (2) | 3 | (1) |
Surgical access | ||||
Open surgery | 651 | (85) | 245 | (72) |
Laparoscopy | 78 | (10) | 66 | (19) |
Transanal | 0 | – | 12 | (4) |
Missing | 38 | (5) | 17 | (5) |
Procedures | ||||
Colectomy | 755 | (98) | – | – |
Rectal resection | – | – | 318 | (94) |
Colostomy alone | 12 | (2) | 10 | (3) |
Transanal tumorectomy | – | – | 12 | (3) |
Abdominoperineal resection | ||||
Low | – | – | 53 | (16) |
Mild/high | – | – | 6/1 | (2) |
Post-operative 30-day mortality | 32 | (4) | 8 | (2) |
Tumor grade | ||||
Well or moderately differentiated | 615 | (80) | 260 | (76) |
Poorly differentiated | 89 | (12) | 26 | (8) |
Post-surgical stage | ||||
I | 82 | (11) | 85 | (25) |
II | 261 | (34) | 75 | (22) |
III | 233 | (30) | 99 | (29) |
IV | 170 | (22) | 60 | (18) |
Missing | 21 | (3) | 21 | (6) |
LNs (number examined) | ||||
≥12 | 575 | (76) | 209 | (66) |
≥ 8 | 673 | (89) | 273 | (86) |
Median | 17 | – | 14 | – |
Margin involvement (R1/(R0 + R1))* | 10 | (2)¶ | 38† | (19) |