改善恶性肿瘤患者的结局 ,关键在于早发现、早诊断、早治疗。但做到“三早”并非易事 ,因为肿瘤的早期阶段可以完全没有症状 ,或者检查不到病变或癌瘤 ,或者难以判定其性质。另一个值得重视的问题是某些癌瘤从正常细胞或组织过渡到癌症细胞或组织的过程 ,可能处于良性或恶性间 Improve the outcome of patients with malignant tumors, the key lies in early detection, early diagnosis and early treatment. However, “three early” is not easy, because the early stage of the tumor can be completely free of symptoms, or check the lesion or cancer, or difficult to determine its nature. Another issue that deserves attention is the transition of certain cancers from normal cells or tissues to cancer cells or tissues, which may be benign or malignant