PMID: 8948346Oct 1, 1996Paper

Metachronous contralateral breast cancer as first event of relapse

International Journal of Radiation Oncology, Biology, Physics
A de la RochefordiereA Fourquet

Abstract

To determine which clinical, biological, or treatment-related factors of the first and second primary breast cancers influenced the outcome following contralateral breast carcinoma (CBC). By August 1994, 319 of 6406 patients with clinical Stage 0 to III breast carcinoma treated between 1981 and 1987 at Institut Curie had developed a second breast cancer that was diagnosed more than 6 months following ipsilateral breast cancer. Of these 319 patients, 235 had a CBC as the first recurrent event and constitute the study population. Comparisons of first and second breast tumor characteristics were done using Fisher's exact test. Survival distributions from the date of CBC were compared by the log-rank test. Prognostic factors for local relapses, distant relapses, and survival after CBC were assessed by univariate and multivariate analysis using the Cox proportional hazards model. The diagnosis of CBC was more frequently guided by mammographies than for ipsilateral tumors (p < 0.0001). The proportion of early stage tumors < or = T1 was significantly higher in the opposite breast as compared to the the first primary tumor (p < 0.0001). A greater rate of noninvasive tumors was observed in CBCs (p = 0.0003). Median follow-up time from t...Continue Reading

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Citations

Dec 8, 1998·International Journal of Cancer. Journal International Du Cancer·P J BostickD S Hoon
Sep 28, 2010·Breast Cancer Research and Treatment·Bilal MajedBernard Asselain
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