肿瘤按其生物学行为,传统习惯上一般区分为良性与恶性两大类。长期以来,“非此即彼”(“非良即恶”)的概念在人们头脑中已根深蒂固。在日常病理工作中,虽然绝大多数肿瘤均可被鉴别为良性或恶性。然而有时确实难以判断。例如某些肿瘤在形态学上既非典型的良性,又无恶性的确切证据。还有些肿瘤,从形态学的标准看,属良性无疑,然而临床上却出现转移。相反的情况,有些肿瘤,镜检貌似凶恶,生物学行为却颇善良。这些现象常使病理诊断意见分 According to their biological behaviors, tumors are generally divided into benign and malignant categories. For a long time, the concept of “either or not” has been deeply rooted in people’s minds. In routine pathological work, although the vast majority of tumors can be identified as benign or malignant. However, it is sometimes difficult to judge. For example, some tumors are neither typical benign nor definitive evidence of morphology. There are also some tumors, from the perspective of morphological criteria, are benign, but there is a clinical shift. On the contrary, some tumors and microscopic examinations look ferocious and biological behaviors are quite good. These phenomena often make pathological diagnosis points