Table 3.
Demographics and postoperative complication rate for rectal cancer referred to body mass index
| Underweight | Normal weight | Overweight | Obesity | Total | |
|---|---|---|---|---|---|
| Patient population (n/(%)) | 13 (2) | 208 (38) | 209 (39) | 111 (21) | 541 (100) |
| Age [year] | 62 (42–77) | 63 (19–91) | 66 (38–86) | 65 (34–88) | 65 (19–91) |
| Gender (n/(%)) | |||||
| Male | 6 (46) | 117 (56) | 155 (74) | 72 (65) | 350 (65) |
| Female | 7 (54) | 91 (44) | 54 (26) | 39 (35) | 191 (35) |
| CCI (points/(%)) | |||||
| 0 points | 4 (31) | 90 (43) | 79 (38) | 36 (32) | 209 (39) |
| 1–2 points | 3 (23) | 54 (26) | 64 (31) | 34 (31) | 155 (29) |
| > 2 points | 6 (46) | 64 (31) | 66 (32) | 41 (37) | 177 (33) |
| ASA scorex | |||||
| 2 | 6 (46) | 164 (79) | 154 (75) | 67 (61) | 391 (73) |
| 3 | 7 (54) | 43 (21) | 48 (23) | 40 (37) | 138 (26) |
| 4 | - | - | 4 (2) | 2 (2) | 6 (1) |
| 5 | - | - | - | - | - |
| Localization (n/(%)) | |||||
| Rectosigmoid junction | 3 (23) | 26 (13) | 33 (16) | 20 (18) | 82 (15) |
| Upper rectal third | 4 (31) | 42 (20) | 54 (26) | 20 (18) | 120 (22) |
| Middel rectal third | 3 (23) | 89 (43) | 86 (41) | 39 (35) | 217 (40) |
| Lower rectal third | 3 (23) | 51 (25) | 36 (17) | 32 (29) | 122 (23) |
| UICC (n/(%)) | |||||
| Stage 0xx | 1 (8) | 17 (8) | 18 (9) | 8 (7) | 44 (8) |
| Stage I | - | 56 (27) | 54 (26) | 33 (30) | 143 (26) |
| Stage II | 5 (39) | 54 (26) | 42 (20) | 23 (21) | 124 (23) |
| Stage III | 2 (15) | 41 (20) | 53 (25) | 28 (25) | 124 (23) |
| Stage IV | 5 (39) | 39 (19) | 42 (20) | 19 (17) | 105 (19) |
| Resectiony (n/(%)) | |||||
| Resection with primary anastomoses | 11 (85) | 160 (77) | 172 (83) | 85 (76) | 427 (80) |
| Extirpation | 2 (15) | 47 (23) | 34 (17) | 26 (24) | 109 (20) |
| Approachyy (n/(%)) | |||||
| Open surgery | 13 (100) | 172 (83) | 184 (88) | 95 (86) | 464 (87) |
| Laparoscopic surgery | - | 34 (16) | 22 (11) | 15 (14) | 71 (13) |
| Bridge-to-surgery | 4 (31) | 17 (8) | 10 (5) | 5 (4) | 36 (7) |
| Emergency surgery | - | 4 (2) | 3 (1) | 2 (2) | 9 (2) |
| Simultaneous HIPEC | - | 2 (1) | 1 (< 1) | - | 3 (< 1) |
| Wound infection (n/(%)) | |||||
| Yes | 2 (15.4) | 17 (8.2) | 25 (12.0) | 20 (18.0) | 64 (11.8) |
| No | 11 (84.6) | 191 (91.8) | 184 (88.0) | 91 (82.0) | 477 (88.2) |
| Total | 13 (2.4) | 208 (38.4) | 209 (38.6) | 111 (20.5) | 541 (100) |
| Level of wound infection (n/(%)) | |||||
| I° | 1 (7.7) | 13 (6.3) | 19 (9.1) | 16 (14.4) | 49 (76.6) |
| II° | 1 (7.7) | 1 (0.5) | 3 (1.4) | 1 (0.9) | 6 (9.4) |
| III° | - | 2 (1.0) | 1 (0.5) | 1 (0.9) | 4 (6.3) |
| IV° | - | 1 (0.5) | 2 (1.0) | 2 (1.8) | 5 (7.8) |
| V° | - | - | - | - | - |
| VI° | - | - | - | - | - |
| Total | 2 (15.4) | 17 (8.2) | 25 (12) | 20 (18) | 541 (100) |
| Anastomotic leakagez (n/(%)) | |||||
| Yes | 1 (9.1) | 15 (9.4) | 13 (7.6) | 8 (9.5) | 37 (8.7) |
| No | 10 (90.9) | 145 (90.6) | 159 (92.4) | 76 (90.5) | 392 (91.8) |
| Total | 11 (2.6) | 160 (37.5) | 172 (40.3) | 84 (19.7) | 427 (100) |
| Level of anastomotic leakage (n/(%)) | |||||
| I° | - | 2 (1.3) | 2 (1.2) | 1 (1.2) | 5 (13.9) |
| II° | 1 (9.1) | 4 (2.5) | 2 (1.2) | 1 (1.2) | 8 (22.2) |
| III° | - | 2 (1.3) | 2 (1.2) | - | 4 (11.1) |
| IV° | - | 7 (4.4) | 7 84.1) | 5 (6.0) | 18 (50) |
| V° | - | - | - | - | - |
| VI° | - | - | - | 1 (1.2) | 1 (2.8) |
| Total | 1 (9.1) | 15 (9.4) | 13 (7.6) | 8 (9.5) | 36 (100) |
| In-hospital mortality (n/(%)) | |||||
| sMOF | - | 1 (0.5) | - | 1 (0.9) | 2 (40) |
| CV/CP | - | 2 (1.0) | - | 1 (0.9) | 3 (60) |
| Total | - | 3 (1.5) | - | 2 (1.8) | 5 (0.9) |
CCI 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
xxUICC 0 was awarded for histopathological findings of a pTis and if histopathological examination after neoadjuvant therapy did not reveal any carcinoma
yPercentages refer to 536 patients because the type of resection was undocumented in 5 patients
yyPercentages in terms of surgical approach refer to 535 patients with 6 endoscopically resected carcinomas
zIn 2 rectal carcinoma patients out of a total of 429 patients no classification of preoperative BMI groups could be made