The rectum and colon must be completely empty before surgery .

手术前病人的结肠和直肠必须排空。

One end of a tube is gently inserted into the rectum .

管的一头轻轻伸入直肠。

In some cases , the rectum is damaged and stool leaks out .

有些病例直肠受损，粪便会持续泄漏出来。

Tissue between her vagina and rectum was ripped , and she developed a fistula .

她阴道组织和直肠被撕裂，形成了一个瘘。

A teacup , a grenade , a pair of glasses , a frozen pig 's tail and a peanut butter jar have all been removed from the male rectum by doctors .

一只茶杯，一个手榴弹，一副眼镜，一条冷冻猪尾巴还有一罐花生酱都曾被医生从男性直肠内取出过。