[Aneuploidy and proliferative activity in breast cancer (flow-cytometric investigation)]

Flow-cytometric assay of DNA levels and proliferative activity of cell in 43 cancers of the breast was carried out. The cytometric data were evaluated versus age, histological malignancy and regional metastasis incidence. The study pointed to a direct correlation between malignancy and aneuploidy (increased fraction of cells featuring unbalanced levels of DNA as well as enhanced DNA index) involved in invasive ductal carcinoma. Aneuploidy and proliferative activity frequency is relatively higher in cases of regionally disseminated tumors. Aneuploidy tumor incidence is higher in age groups under 50 than in older patients.