Table 1.
Characteristics of patients and rectal cancers
| Characteristics | Non-radiotherapy | Radiotherapy | ||
|---|---|---|---|---|
| |
No. |
% |
No. |
% |
| Gender |
|
|
|
|
| Male |
45 |
58 |
40 |
62 |
| Female |
33 |
42 |
25 |
38 |
| Age (years) |
|
|
|
|
| ≤ 67 |
33 |
42 |
26 |
40 |
| > 67 |
45 |
58 |
39 |
60 |
| TNM stage |
|
|
|
|
| I |
21 |
27 |
18 |
28 |
| IIA + IIIA + IIIB |
39 |
50 |
38 |
58 |
| IIIC + IV |
18 |
23 |
9 |
14 |
| Differentiation |
|
|
|
|
| Well |
5 |
6 |
4 |
6 |
| Moderately |
55 |
71 |
44 |
68 |
| Poorly |
18 |
23 |
17 |
26 |
| Number of tumors |
|
|
|
|
| Single |
68 |
89 |
53 |
82 |
| Multiple* |
8 |
11 |
12 |
18 |
| Surgical type |
|
|
|
|
| Rectal amputation |
42 |
54 |
25 |
38 |
| Anterior resection |
36 |
46 |
40 |
62 |
| Rectal margin |
|
|
|
|
| Tumor free |
74 |
95 |
62 |
95 |
| Tumor involved margin |
4 |
5 |
3 |
5 |
| Distance to anal verge (cm) |
|
|
|
|
| Mean | 7.3 | 8.6 | ||
*Other colorectal cancer or other type of tumor besides the present rectal cancer.