polyp of rectum and colon
...结直肠息肉 溃疡性结肠炎 结直肠癌 结肠黑病变 [gap=598]Key words：non?pain enteric microscope；polyp of rectum and colon；ulcer colonitis；rectum and colon cancer；colon black lesion ..
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polyp of rectum and colon
直肠和结肠息肉
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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Most colorectal cancers begin as a growth, or tumor, on the inner lining of the colon or rectum called a polyp, and they can change to cancer over many years.
大多数结肠癌刚开始是在结肠或直肠内表面生长出息肉，经数年后会变成肿瘤。
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