肿瘤是人体组织细胞由于内在和外界致病因素长时间的作用,使细胞的遗传物质—脱氧核糖核酸(DNA)产生突变,对细胞的生长和分裂失去控制而发生异常增生和功能失调所造成的一种疾病。它是一类严重威胁人民健康的常见病、多发病。口腔颌面部恶性肿瘤为全身恶性肿瘤的8.2%,多发于男性,以上皮肤组织来源最多,尤其是鳞状上皮细胞癌最常见,其次为腺源性上皮癌及未分化癌,肉瘤发生于口腔颌面部者较少,造血间叶组织来源的恶性肿瘤也可见于口腔颌面部。早期发现、正确诊断是根治恶性肿瘤的关键,具体如何处理恶性肿瘤就显得更为重要,故在此提请大家注意以下几个问题。 1 切取活检的适应症与要求 Tumor is the result of a long time of human tissue cells due to intrinsic and external factors that make the genetic material of the cell - DNA mutation, the loss of control of cell growth and division caused by abnormal proliferation and dysfunction A disease. It is a common and frequently-occurring disease that seriously threatens people’s health. Oral and maxillofacial malignancies are systemic malignant tumors of 8.2%, mainly in men, most of the above skin tissue sources, especially squamous cell carcinoma is the most common, followed by adeno-associated epithelial carcinoma and undifferentiated carcinoma, sarcoma occurred in the mouth Maxillofacial less, hematopoietic malignancies derived from mesenchymal tissue can also be found in oral and maxillofacial region. Early detection, the correct diagnosis is the key to radical treatment of malignant tumors, specifically how to deal with malignant tumors is even more important, so here to draw your attention to the following questions. 1 cut biopsy indications and requirements