Copyright: ©Author(s) 2026.
World J Gastroenterol. Aug 14, 2026; 32(30): 121592
Published online Aug 14, 2026. doi: 10.3748/wjg.121592
Published online Aug 14, 2026. doi: 10.3748/wjg.121592
Table 1 Patients baseline characteristics and distribution of pelvic autonomic nerves annotation boxes, mean ± SD/n (%)
| Characteristic | Internal cohort (n = 120) | External validation cohort (n = 20) |
| Gender | ||
| Male | 68 (56.7) | 11 (55.0) |
| Female | 52 (43.3) | 9 (45.0) |
| Age | 62.5 ± 10.2 | 63.1 ± 9.8 |
| BMI (kg/m2) | 23.1 ± 2.8 | 22.8 ± 3.0 |
| UICC-TNM stage | ||
| II stage | 87 (72.5) | 14 (70.0) |
| III stage | 33 (27.5) | 6 (30.0) |
| Histological type | ||
| Adenocarcinoma | 97 (80.8) | 18 (90.0) |
| Other | 23 (19.2) | 2 (10.0) |
| Surgical procedure | ||
| Low anterior resection | 99 (82.5) | 17 (85.0) |
| Abdominoperineal resection | 3 (2.5) | 0 (0.0) |
| Intersphincteric resection | 18 (15.0) | 3 (15.0) |
| Intraoperative blood loss (mL), median (interquartile range) | 15 (10-20) | 12 (8-18) |
| Operation duration (minute) | 256.7 ± 71.4 | 256.7 ± 71.4 |
| Preoperative neoadjuvant therapy | ||
| Received | 88 (73.3) | 15 (75.0) |
| Not received | 32 (26.7) | 5 (25.0) |
| Annotation box (sum) | 5402 | 930 |
| RIMP | 973 (18.0) | 140 (15.1) |
| LIMP | 864 (16.0) | 157 (16.9) |
| SHP | 216 (4.0) | 37 (4.0) |
| RHN | 610 (11.3) | 110 (11.8) |
| LHN | 648 (12.0) | 114 (12.3) |
| RPN | 820 (15.2) | 130 (14.0) |
| LPN | 878 (16.2) | 158 (16.9) |
| RNVB | 200 (3.7) | 44 (4.7) |
| LNVB | 193 (3.6) | 40 (4.3) |
- Citation: Zhang Q, Li J, Meng T, Chen ZF, Zhou XZ, Lu XR. Deep-learning-based object detection of pelvic autonomic nerves during total mesorectal excision. World J Gastroenterol 2026; 32(30): 121592
- URL: https://www.wjgnet.com/1007-9327/full/v32/i30/121592.htm
- DOI: https://dx.doi.org/10.3748/wjg.121592