结论：乙状结肠镜直视下给药为一有效、简便、安全的治疗溃疡性直肠乙状结肠炎的方法。

Conclusions Drug treatment through sigmoidoscope is a effective, safe a nd convenient therapeutic way for ulcerative colitis.

youdao

结果表明，乙状结肠镜使结直肠癌的发病率和死亡率分别降低了23%和31%。

The results indicate that flexible sigmoidoscopy reduces cancer incidence and mortality by 23% and 31%, respectively.

youdao

结果表明，乙状结肠镜使结直肠癌的发病率和死亡率分别降低了23%和31%。

The results indicate that flexible sigmoidoscopy reduces cancer incidence and mortality by 23% and 31%, respectively.

youdao