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- W1983608532 abstract "Background. The incidence and significance of tumor heterogeneity in primary tumors and metastatic lymph nodes were investigated in Stage IB–IIA cervical cancers. Methods. Paraffin-embedded tissues from 96 radical hysterectomy specimens were dewaxed, disaggregated, and subjected to dual parameter flow cytometry. Threedimensional histograms were generated to delineate different tumor populations. A DNA index difference of at least ± 0.15 was used to define tumor heterogeneity. Results. Mean DNA index difference of various tumor populations was 0.29 ± 0.13. Among 69 patients with normal lymph nodes, there were 12 patients (incidence, 17.4%) with tumor heterogeneity in the primary tumors. Of 27 patients with metastatic lymph nodes, 5 (incidence, 18.5%) had evidence of tumor heterogeneity in the primary tumor, and 18 of 47 (incidence, 38.3%) had tumor heterogeneity in metastatic lymph nodes. When using DNA index to determine clonal origin of metastatic lymph nodes, as many as 60% of the metastases could not be traced to the primary tumor. Tumor heterogeneity was associated with a 40% reduction in median survival time. However, because of the small number of patients with tumor heterogeneity, statistical analyses did not show prognostic significance. Conclusions. Tumor heterogeneity appeared to be a common characteristic of early cervical carcinoma. Additional study is needed to fully evaluate its prognostic value." @default.
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- W1983608532 date "1993-04-15" @default.
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- W1983608532 title "Evidence of tumor heterogeneity in cervical cancers and lymph node metastases as determined by flow cytometry" @default.
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- W1983608532 doi "https://doi.org/10.1002/1097-0142(19930415)71:8<2543::aid-cncr2820710818>3.0.co;2-u" @default.
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