因此，在原发性结直肠印戒细胞癌明确诊断前必须排除其它器官的直接浸润或转移至结直肠。
Therefore, a secondary infiltration or metastasis to the colon and rectum must be excluded before a definite diagnosis of primary colorectal signet ring cell carcinoma can be established.
双吻合器应用于直肠癌前切除术中的结直肠吻合具有操作简单，节约手术时间和安全等优点，并可适当提高低位直肠癌保肛率。
The double stapling technique is safe, and easily performed for colorectal anastomosis in deep pelvis, and it can enhance the rate of anal-saving operation in low rectal carcinoma.
而结直肠癌是癌症中少数能够通过早期的发现切除息肉或者其他的癌前病变达到治愈的癌症。
It is one of the very few cancers that can be entirely prevented by removing polyps or other precancerous growths or can be cured if detected early.
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