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  • Title: Prognostic significance of flow cytometry in non-small-cell lung cancer.
    Author: Rice TW, Bauer TW, Gephardt GN, Medendorp SV, McLain DA, Kirby TJ.
    Journal: J Thorac Cardiovasc Surg; 1993 Aug; 106(2):210-7. PubMed ID: 8393505.
    Abstract:
    To clarify the value of deoxyribonucleic acid (DNA) ploidy analysis, we prospectively studied single-parameter flow cytometric findings of fresh tissue from 272 patients with primary non-small-cell lung cancer from whom adequate tissue from the lung cancer was available. The mean age of the patients was 65.5 years; 65.8% were men. Histologic types were as follows: adenocarcinoma, 107 (39.3%); squamous cell, 100 (36.8%); large cell, 56 (20.6%); adenosquamous, 8 (2.9%); and giant cell, 1 (0.4%). Histologic grades were as follows: I (well differentiated), 15 (5.5%); II, 100 (36.8%); and III, 157 (57.7%). American Joint Committee on Cancer stages were as follows: I, 151 (55.5%); II, 38 (14%); III, 74 (27.2%); and IV, 9 (3.3%). Survivals at 1 year and 3 years were 74.2% +/- 2.8% and 52.4% +/- 4.8%, respectively. For non-squamous cell lung cancer, multivariate analyses with the Cox proportional hazards regression model for survival showed (1) that increasing American Joint Committee on Cancer stage (p < 0.001), male gender (p = 0.02), and histologic grades II and III (p = 0.04) were of independent (negative) prognostic significance and (2) that the presence and absence of DNA aneuploidy (p = 0.91), the classification of DNA histogram (p = 0.81), the DNA index (p = 0.46), and the results of cell cycle analysis in tumors with no aneuploidy (S phase, p = 0.23; S + G2M, p = 0.62) were of no prognostic significance. For squamous cell lung cancer, multivariate analyses showed that increasing American Joint Committee on Cancer stage (p = 0.003) and increasing DNA index (p = 0.009) were of independent (negative) prognostic significance.
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