(资料图)
近日在浙江嘉兴，73岁老人经常大便发黑，肠镜下发现4厘米肿块，确诊大肠癌癌前病变。老人的三位兄弟姐妹同期肠镜也发现多发息肉。便血或黑便是结直肠癌最常见的症状，3种大便出血症状往往不是痔疮，需要及时检查就医以免延误治疗最佳时期。
(资料图)
近日在浙江嘉兴，73岁老人经常大便发黑，肠镜下发现4厘米肿块，确诊大肠癌癌前病变。老人的三位兄弟姐妹同期肠镜也发现多发息肉。便血或黑便是结直肠癌最常见的症状，3种大便出血症状往往不是痔疮，需要及时检查就医以免延误治疗最佳时期。
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