期刊
BREAST CANCER RESEARCH AND TREATMENT
卷 117, 期 1, 页码 199-204出版社
SPRINGER
DOI: 10.1007/s10549-008-0102-6
关键词
Basal-like breast cancer; HER2; Luminal A; Luminal B; Tumor size; Lymph node status; Survival; Breast cancer; Poisson distribution
类别
资金
- Canadian Breast Cancer Research Alliance
Larger breast tumors tend to be associated with a greater number of axillary lymph nodes involved with metastatic tumor than are smaller tumors. This rule may not fully apply in BRCA1-related breast cancers. We hypothesized that the rule also might not apply in basal-like breast cancers (BLBC), and further, that disruption of this relationship would impact on prognosis. In 1,324 non-BLBC (87.1% of 1520 tumors), after adjustment for grade, a strongly positive correlation between increasing tumor size and increasing number of lymph nodes involved by tumor was observed (P for trend <.001). The correlation was much weaker in 196 BLBC (12.9%) (P for trend = 0.58). Similarly, a worsening breast cancer-specific survival with increasing tumor size was observed in non-BLBC (P for trend <.001) but not in BLBC (P for trend = 0.43). The size-nodes relationship in BLBC is distinct and is similar to that seen in BRCA1-related breast cancer, further suggesting biological similarities between these sub-types of breast cancer. Moreover, tumor size is not a strong indicator of prognosis in BLBC.
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