Fifty-one cases of nephroblastoma were pathologically studied by light and electron microscopy as well as microspectrophotometry. Under light and electron microscope, the tumor appeared to be carcinosarcoma structural...Fifty-one cases of nephroblastoma were pathologically studied by light and electron microscopy as well as microspectrophotometry. Under light and electron microscope, the tumor appeared to be carcinosarcoma structurally, consisting of epithelial, sarcomatous and undlfferentiated tumor cells. Their ultrastructural feature was similar to that of renal tubular epithelial cells and tibroblast. It could differentially be diagnosed from renal metoblastic tumors by electron microscopy when the tumor was mainly composed of sarcomatous cells. Microspectrophotometer measurement showed an Increased mean nuclear DNA content (DI>1. 04), belonging to aneuplold tumor, which together with polyploid cells, serving as one of the Important characteristics of malignant tumors. In addition, the poorer the tumor differentiation the higher was the DNA content of the tumor cells, suggesting that the measurement of nuclear DNA of tumor cells might also serve as one of signs to acertain the degree of differentiation and malignant of nephroblastomas with more preciseneas than general morphological examinations.展开更多
目的:探讨神经母细胞瘤(NB)细胞增殖活性在 NB 恶性程度和预后判断中的价值。方法:应用免疫组化法对20例 NB 标本中增殖细胞核抗原(PCNA)表达进行检测。结果:PCNA 表达指数(PEI)与肿瘤重量、有丝分裂核碎裂指数(MKI)呈正相关,r 分别为0....目的:探讨神经母细胞瘤(NB)细胞增殖活性在 NB 恶性程度和预后判断中的价值。方法:应用免疫组化法对20例 NB 标本中增殖细胞核抗原(PCNA)表达进行检测。结果:PCNA 表达指数(PEI)与肿瘤重量、有丝分裂核碎裂指数(MKI)呈正相关,r 分别为0.664和0.903;与术后生存时间呈负相关,r=-0.919;年龄<1岁、临床早期(Ⅰ、Ⅱ期)及ⅣS期、神经节神经母细胞瘤(GNB)、Shimada 病理分型 F 型及肿瘤切除者,其 PEI 均低于相应组别,P 值分别为>0.05、<0.05、<0.05、<0.01、<0.05。结论:PCNA 的表达与 NB 的恶性增殖、生长及浸润密切相关,是 NB 细胞增殖活性增高的分子标志;PEI 对判断 NB 的恶性程度和预后具有重要价值。展开更多
文摘Fifty-one cases of nephroblastoma were pathologically studied by light and electron microscopy as well as microspectrophotometry. Under light and electron microscope, the tumor appeared to be carcinosarcoma structurally, consisting of epithelial, sarcomatous and undlfferentiated tumor cells. Their ultrastructural feature was similar to that of renal tubular epithelial cells and tibroblast. It could differentially be diagnosed from renal metoblastic tumors by electron microscopy when the tumor was mainly composed of sarcomatous cells. Microspectrophotometer measurement showed an Increased mean nuclear DNA content (DI>1. 04), belonging to aneuplold tumor, which together with polyploid cells, serving as one of the Important characteristics of malignant tumors. In addition, the poorer the tumor differentiation the higher was the DNA content of the tumor cells, suggesting that the measurement of nuclear DNA of tumor cells might also serve as one of signs to acertain the degree of differentiation and malignant of nephroblastomas with more preciseneas than general morphological examinations.
文摘目的:探讨神经母细胞瘤(NB)细胞增殖活性在 NB 恶性程度和预后判断中的价值。方法:应用免疫组化法对20例 NB 标本中增殖细胞核抗原(PCNA)表达进行检测。结果:PCNA 表达指数(PEI)与肿瘤重量、有丝分裂核碎裂指数(MKI)呈正相关,r 分别为0.664和0.903;与术后生存时间呈负相关,r=-0.919;年龄<1岁、临床早期(Ⅰ、Ⅱ期)及ⅣS期、神经节神经母细胞瘤(GNB)、Shimada 病理分型 F 型及肿瘤切除者,其 PEI 均低于相应组别,P 值分别为>0.05、<0.05、<0.05、<0.01、<0.05。结论:PCNA 的表达与 NB 的恶性增殖、生长及浸润密切相关,是 NB 细胞增殖活性增高的分子标志;PEI 对判断 NB 的恶性程度和预后具有重要价值。