Table 1.
Baseline characteristics of 40 patients who underwent robotic colorectal surgery
| Characteristic | |
|---|---|
| Age (years, mean ± SD) (range) | 60.00 ± 13.22 (32 – 89) |
| Gender | |
| Female | 21 (52.5 %) |
| Male | 19 (47.5 %) |
| Tumor size | |
| <5 cm | 36 (90.0 %) |
| ≥5 cm | 4 (10.0 %) |
| Tumor size (cm, mean ± SD) (range) | 2.58 ± 1.81 (0 – 8) |
| Tumor location | |
| Ascending colon | 1 (2.5 %) |
| Descending colon | 2 (5.0 %) |
| Sigmoid colon | 4 (10.0 %) |
| Rectum | 33 (82.5 %) |
| Histology | |
| Tis | 2 (5.0 %) |
| Well | 5 (12.5 %) |
| Moderately | 33 (82.5 %) |
| AJCC Stagea | |
| 0 | 7 (17.5 %) |
| I | 7 (17.5 %) |
| II | 7 (17.5 %) |
| III | 14 (35.0 %) |
| IV | 5 (12.5 %) |
| Tumor depth | |
| T0 | 6 (15.0 %) |
| Tis | 2 (5.0 %) |
| T1 | 3 (7.5 %) |
| T2 | 13 (32.5 %) |
| T3 | 16 (40.0 %) |
| Lymph Node metastasis | |
| N0 | 23 (57.5 %) |
| N1 | 15 (37.5 %) |
| N2 | 2 (5 %) |
| Retrieved Lymph Node (median) (range) | |
| All patients | 9 (0–22) |
| Patients with pre-op CCRTb | 7 (0–16) |
| Patients with without pre-op CCRTb | 12 (5–22) |
| Vascular invasion | |
| No | 31 (77.5 %) |
| Yes | 9 (22.5 %) |
| Perineural invasion | |
| No | 34 (85.0 %) |
| Yes | 6 (15.0 %) |
| Pre-op serum CEAc level | |
| <5 ng/ml | 20 (50.5 %) |
| ≥5 ng/ml | 20 (50.0 %) |
| Post-op serum CEAc level | |
| <5 ng/ml | 29 (75.0 %) |
| ≥5 ng/ml | 11 (25.0 %) |
| ASAd classification | |
| II | 24 (60.0 %) |
| III | 16 (40.0 %) |
| Diabetes mellitus | |
| Yes | 10 (25.0 %) |
| No | 30 (75.0 %) |
| BMIe kg/m2 (range) | 23.77 ± 3.86 (17.20 – 34.02) |
aAJCC American Joint Commission on Cancer; bConcurrent chemoradiotherapy
cCEA Carcinoembryonic antigen; dASA American Society of Anesthesiologists
eBMI Body mass index