Annual fecal occult blood test proen to reduce colorectal cancer deaths by one - third 证实每年粪隐血检查可以降低1 / 3结直肠癌的死亡率
3.
Additional , still have large intestine cancer , especially right half colonic cancer , often have the appearance that constipation and diarrhoea appear alternately , test of defecate concealed blood lasts electropositive ( demonstrative far end is colonic have haemorrhage ) , some can touch in right abdomen reach bump , accompany have tenderness , constant fallibility examine is wrapped for appendix piece 另外，还有大肠癌，非凡是右半结肠癌，常有便秘和腹泻交替出现的现象，大便隐血试验持续阳性(说明远端结肠有出血) ，有的在右腹部可扪及肿块，并伴有压痛，常易误诊为阑尾包块。
