Table 1 Baseline characteristics of all eligible patients (n = 74)
Characteristics | No. (%) |
|---|---|
Gender | |
Male | 45 (60.8) |
Female | 29 (39.2) |
Age (years) | |
< 60 | 37 (50.0) |
≥ 60 | 37 (50.0) |
Primary tumor location: distance from the anal verge (cm) | |
> 5 | 46 (62.2) |
≤ 5 | 28 (37.8) |
Type of local recurrence | |
Anastomotic recurrence | 23 (31.1) |
Regional lymph node recurrence | 35 (47.3) |
Undetermined pelvic recurrence | 16 (21.6) |
Distant metastasis | |
Liver/lung/localized lymph node | 53 (71.6) |
3 or more organs/structures involved or peritoneal metastases | 21 (28.4) |
Type of resection of primary tumor | |
Anterior resection | 55 (74.3) |
Abdominoperineal resection | 13 (17.6) |
Others | 6 (8.1) |
T stage of primary tumor | |
T1-2 | 6 (8.1) |
T3 | 41 (55.4) |
T4 | 27 (36.5) |
N stage of primary tumor | |
N0 | 29 (39.2) |
N1 | 36 (48.6) |
N2 | 9 (12.2) |
Tumor grade of primary tumor | |
G1-2 | 57 (77.0) |
G3 | 17 (23.0) |
Preoperative CRT or RT of primary tumor | |
Yes | 23 (31.1) |
No | 51 (68.9) |
Time to recurrence | |
< 24 months | 52 (70.3) |
24–36 months | 10 (13.5) |
> 36 months | 12 (16.2) |