摘要
<正>结直肠癌是消化系统最常见的恶性肿瘤之一,近年发病率及死亡率呈上升趋势,在我国,其发病率在男性和女性恶性肿瘤中分别居第5位和第4位,死亡率在恶性肿瘤中居第5位~([1])。结直肠癌患者的生存期与肿瘤分期明显相关,病变局限于原位者5年生存率约为90%,而伴有局部和远处转移者5年生存率为
引文
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