采用核仁组织导体区银染技术（ＡｇＮＯＲ技术），对涎腺多形性腺瘤中各种组织成份进行定量研究，结果发现在实性及腺管样区域中肿瘤性上皮细胞ＡｇＮＯＲ颗粒均数为４２０，大小颗粒之比接近１∶３；软骨样细胞者为１８０，大小颗粒之比接近１∶１；粘液样细胞者为２０６，大小颗粒之比接近１∶１，前者与后两者间有显著性差异（Ｐ＜００５），结果表明：实性及腺管样区域中的肿瘤性上皮细胞活性较软骨样细胞、粘液样细胞高，结果提示肿瘤性上皮成份丰富的ＰＡ可能更具有癌变的潜能 Using AgNOR technology in the nucleolar conductor area, a quantitative study was performed on various tissue components of the parotid pleomorphic adenoma. The results showed that the average number of AgNOR particles in the solid and duct-like areas was equal to 4  20, the size of the particles close to 1:3; cartilage cells were 1  80, the size of the particles close to 1:1; mucus-like cells were 2  06, the size of particles close to 1:1, the former There was a significant difference between the latter two groups (P<005). The results showed that the activity of neoplastic epithelial cells in the solid and duct-like areas was higher than that of cartilage-like cells and mucin-like cells. The results suggested that the neoplastic epithelial components Abundant PA may have more cancerous potential