Table 1.
Patient characteristics (n = 100)
| Factor | Number |
|---|---|
| Age (years old) | 63 (26–83) |
| Sex (male/female) | 72/28 |
| BMI (kg/m2) | 22.5 (17.1–33.1) |
| Comorbidities (yes/no) | 48/40 |
| ・BPH (yes/no)* | 7/57* |
| Prostate-related comorbidities (yes/no)** | 9/55* |
| ・Previous abdominal surgery (yes/no) | 25/56 |
| ASA (1/2/3) | 23/74/0 |
| Preoperative treatment (TNT/NACRT/NAC/none) | 3/18/45/34 |
| Tumor location (Ra/Rb) | 20/80 |
| Distance from AV to tumor (cm) | 5 (0–11) |
| (y)pStage (0(pCR)/I/II/IIIA/IIIB/IV) | 3/14/25/20/11/13 |
*Only males
**Prostate-related comorbidities involve BPH and prostate cancer after treatment
Abbreviations: BMI: body mass index; BPH: benign prostatic hyperplasia; ASA: American Society of Anesthesiologists Physical Status; TNT: total neoadjuvant therapy; NACRT: neoadjuvant chemoradiotherapy; NAC: neoadjuvant chemotherapy; Ra: upper rectum; Rb: lower rectum; AV: anal verge; (y)pStage: (post preoperative therapy) pathological stage; pCR: pathological complete response