Table 1. Main characteristics of the studied patients.
| Features | Frequency | |
|---|---|---|
| n | % | |
| Gender | ||
| Male | 56 | 56.6 |
| Female | 43 | 43.4 |
| ASA* | ||
| (1) no comorbidities | 30 | 30.3 |
| (2) mild systemic disease | 53 | 53.5 |
| (3) severe systemic disease | 16 | 16.2 |
| Smoking | 22 | 22.2 |
| Ethylism | 2 | 2.0 |
| Clinical manifestations | ||
| Mucus | 69 | 53.8 |
| Blood | 69 | 53.8 |
| Diarrhea | 38 | 29.4 |
| Rectal pain | 36 | 28.2 |
| Rectal tenesmus | 26 | 20.5 |
| Weight loss | 23 | 17.9 |
| Anal incontinence | 15 | 11.5 |
| Constipation | 5 | 3.84 |
| Anemia | 2 | 1.28 |
| Asymptomatic | 21 | 21.2 |
| Synchronic Adenomas | 43 | 43.4 |
*ASA: American Society of Anesthesiology Surgical Risk Rating.