Table 4.
Demographics and postoperative complication rate for rectal cancer referred to preoperative weight loss
| Preoperative weight loss | No preoperative weight loss | Total | |
|---|---|---|---|
| Patient population (n/(%)) | 79 (14) | 465 (86) | 544 (100) |
| Age [year] | 66 (33–88) | 64 (19–91) | 65 (19–91) |
| Gender (n/(%)) | |||
| Male | 48 (61) | 305 (66) | 353 (65) |
| Female | 31 (39) | 160 (34) | 191 (35) |
| CCI (n/(%)) | |||
| 0 points | 28 (35) | 181 (39) | 209 (38) |
| 1–2 points | 21 (27) | 136 (29) | 157 (29) |
| > 2 points | 30 (38) | 148 (32) | 178 (33) |
| ASA scorex | |||
| 2 | 54 (69) | 339 (74) | 393 (73) |
| 3 | 24 (31) | 115 (25) | 139 (26) |
| 4 | - | 6 (1) | 6 (1) |
| 5 | - | - | - |
| Localization (n/(%)) | |||
| Rectosigmoid junction | 13 (17) | 69 (15) | 82 (15) |
| Upper rectal third | 17 (25) | 104 (22) | 121 (22) |
| Middel rectal third | 32 (41) | 187 (40) | 219 (40) |
| Lower rectal third | 17 (22) | 105 (23) | 122 (22) |
| UICC (n/(%)) | |||
| Stage 0y | 4 (5) | 40 (9) | 44 (8) |
| Stage I | 14 (18) | 130 (28) | 144 (27) |
| Stage II | 21 (27) | 103 (22) | 124 (23) |
| Stage III | 16 (20) | 110 (24) | 126 (23) |
| Stage IV | 24 (30) | 81 (18) | 105 (19) |
| Resectionz (n/(%)) | |||
| Resection with primary anastomoses | 63 (80) | 366 (80) | 429 (80) |
| Extirpation | 16 (20) | 93 (20) | 109 (20) |
| Approachzz (n/(%)) | |||
| Open surgery | 70 (90) | 396 (86) | 466 (87) |
| Laparoscopic surgery | 8 (10) | 63 (14) | 71 (13) |
| Bridge-to-surgery | 11 (14) | 25 (5) | 36 (7) |
| Emergency surgery | 1 (1) | 8 (2) | 9 (2) |
| Simultaneous HIPEC | 2 (3) | 1 (< 1) | 3 (1) |
| Neoadjuvant therapy | |||
| Yes | 42 (53.2) | 219 (47.1) | 261 (48) |
| No | 37 (46.8) | 246 (52.9) | 283 (52) |
| Wound infection (n/(%)) | |||
| Yes | 10 (12.7) | 54 (11.6) | 64 (11.8) |
| No | 69 (87.3) | 411 (88.4) | 480 (88.2) |
| Total | 79 (14.5) | 465 (85.5) | 544 (100) |
| Level of wound infection (n/(%)) | |||
| I° | 8 (10.1) | 41 (8.8) | 49 (76.6) |
| II° | - | 6 (1.3) | 6 (9.4) |
| III° | 1 (1.3) | 3 (0.6) | 4 (6.3) |
| IV° | 1 (1.3) | 4 (0.9) | 5 (7.8) |
| V° | - | - | - |
| VI° | - | - | - |
| Total | 10 (12.7) | 54 (11.6) | 64 (100) |
| Anastomotic leakage (n/(%)) | |||
| Yes | 5 (7.9) | 32 (8.7) | 37 (8.7) |
| No | 58 (92.1) | 334 (91.3) | 392 (91.4) |
| Total | 63 (14.5) | 366 (85.5) | 429 (100) |
| Level of anastomotic leakage (n/(%)) | |||
| I° | 2 (3.2) | 3 (0.8) | 5 (13.5) |
| II° | 1 (1.6) | 7 (1.9) | 8 (21.6) |
| III° | - | 4 (1.1) | 4 (10.8) |
| IV° | 2 (3.2) | 17 (4.6) | 19 (51.4) |
| V° | - | - | - |
| VI° | - | - | 1 (2.7) |
| Total | 5 (7.9) | 32 (9.0) | 37 (100) |
| In-hospital mortality (n/(%)) | |||
| sMOF | 2 (0.4) | - | 5 (100) |
| CV/CP | 3 (0.6) | - | 2 (60) |
| Total | 5 (0.9) | - | 3 (40) |
| Diverting stomy (n/(%)) | |||
| Yes | 14 (6.5) | 203 (93.5) | 217 (50.6) |
| No | 23 (10.8) | 189 (89.2) | 212 (49.4) |
| Total | 37 (8.6) | 392 (91.4) | 429 (100) |
CC Charlson Comorbidity Index, ASA score American Society of Anesthesiologists, UICC Union for International Cancer Control, RWA resection with primary anastomoses, HIPEC hyperthermic intraperitoneal chemotherapy, sMOF septic multi-organ failure, CV/CP cardiovascular/cardiopulmonary conditional organ failure
xPercentages refer to 535 patients because it was undocumented in 6 patients
yUICC 0 was awarded for histopathological findings of a pTis and if histopathological examination after neoadjuvant therapy did not reveal any carcinoma
zPercentages refer to 536 patients because the type of resection was undocumented in 6 patients and in 2 no classification of preoperative WL groups could be made
zzPercentages in terms of surgical approach refer to 535 patients with 7 endoscopically resected carcinomas