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Methodological aspects of flow cytometry DNA analysis in endometrial carcinoma, with special reference to sampling and reproducibility

Author

Summary, in English

Two adjacent paraffin-embedded sections manifested concordance in ploidy status in 96% of cases (45/47), and the standard deviation (SD) for SPF was 2.7%. Analysis of 'micro-heterogeneity', within a distance of < or = 700 microm, yielded results for concordant ploidy status in 94% of cases, and the SD for SPF was 1.9% (n = 17). Frozen and paraffin-embedded material yielded concordant results for ploidy status in 87% (39/45) of cases, and SPF values were significantly lower (mean difference 1.5%) in the frozen samples. Diagnostic and repeat curettage material yielded concordant results for DNA ploidy status in 85% (40/47) of cases, and no significant difference in mean SPF (12% vs. 11%) was found. Discordant DNA ploidy results were attributable to small differences in the DNA histograms influencing the interpretation of near-diploid, near-tetraploid and small non-diploid cell populations, and the influence of debris on SPF estimation. On the basis of our findings and the practical advantage we recommend paraffin-embedded material from diagnostic curettage for FCM DNA analysis; the results are available sooner and the handling and transportation of tumor samples is more convenient.

Publishing year

1996

Language

English

Pages

999-1006

Publication/Series

Acta Oncologica

Volume

35

Issue

8

Document type

Journal article

Publisher

Taylor & Francis

Topic

  • Cancer and Oncology

Status

Published

ISBN/ISSN/Other

  • ISSN: 1651-226X