单词：sigmoid colon
sigmoid colon的用法和样例：
例句
- Dislodging entrapped fecal matter above the sigmoid colon area.取出包埋粪便以上乙状结肠区。
- Sigmoidoscopy does not reach the upper stretches of the colon.乙状结肠镜则无法看到结肠的上半部分。
- sigmoid flexure乙状结肠
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