Summary
Using static cytofluorometry, S-phase was determined on the primary tumors of 421 patients with breast carcinomas in stages I–III diagnosed 1981–85 during the second and third screening rounds of a randomized trial evaluating the effect of mammographic screening. Through December 1988, 82 patients had developed local and/or distant recurrence, 51 of whom had died of cancer during the same period. The distribution among sites of recurrence differed between patients with tumors detected by mammography screening and cancers diagnosed due to clinical symptoms. The mean S-phase fraction was highest in patients with liver or brain metastases and lowest in patients with metastases in subcutaneous and cutaneous tissue and lymph nodes only. In univariate analysis, survival after first recurrence was significantly associated with the site of primary recurrence, the disease-free interval, and node status and tumor size at diagnosis, as well as the S-phase level. The median survival period was 31.3. months for patients with a S-phase fraction below 6%, and 10.7 months in cases with S-phase exceeding 10%. Neither ploidy nor the estrogen receptor content had significant influence on post-recurrence survival. In Cox's multiple regression analysis, only metastatic site, disease-free interval, and S-phase fraction showed significantly independent prognostic value.
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Hatschek, T., Carstensen, J., Fagerberg, G. et al. Influence of S-phase fraction on metastatic pattern and post-recurrence survival in a randomized mammography screening trial. Breast Cancer Res Tr 14, 321–327 (1989). https://doi.org/10.1007/BF01806304
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DOI: https://doi.org/10.1007/BF01806304