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Background
Few data exist on the influence of tumor biologic subtype on treatment response and outcomes for inflammatory breast cancer (IBC). We examined a contemporary cohort of IBC patients treated with current targeted systemic therapies, selected on the basis of tumor biologic subtype, to evaluate pathologic treatment response and cancer outcomes across biologic subtypes.Patients and Methods
We studied 57 clinical stage T4dM0 IBC patients operated on at our institution from October 2008 to July 2015. Comparisons across biologic subtypes were performed by Wilcoxon rank-sum or chi-square tests; Kaplan-Meier and log-rank tests were used to analyze survival outcomes.Results
All patients received neoadjuvant systemic therapy; 54 (95%) completed postmastectomy radiation. Ninety-one percent (52/57) had clinically node-positive disease at presentation. Pathologic complete response (pCR) rates in the breast and axilla differed significantly by approximated biologic subtype, defined as estrogen receptor (ER) positive/human epidermal growth factor receptor 2 (HER-2) negative; and HER-2 positive and ER negative/HER-2 negative (all P < .001). After 50 months' median follow-up, 20 patients experienced disease recurrence. Site of first relapse was distant in 80% (16/20). Disease-free survival (DFS) and breast cancer-specific survival (BCSS) differed significantly by biologic subtype. Five-year DFS was 46% for patients with ER-positive/HER-2–negative tumors, 82% for HER-2–positive tumors, and 33% for ER-negative/HER-2–negative tumors (P < .001), while 5-year BCSS was 76%, 100%, and 57%, respectively (P = .02)—notably better than historic reports.Conclusion
Our data show that both treatment response and outcomes vary significantly across IBC biologic subtypes. Multimodal treatment and modern systemic therapies have markedly improved DFS and BCSS. These data provide further evidence to suggest that IBC is not a distinct biologic entity transcending standard breast tumor marker subclassification. 相似文献The purpose of this consensus guideline is to outline recommendations for genetic testing that medical professionals can use to assess hereditary risk for breast cancer.
MethodsLiterature review included large datasets, basic and clinical science publications, and recent updated national guidelines. Genetic testing to assess hereditary risk of cancer is a complex, broad, and dynamic area of medical research. The dominant focus of this guideline is limited in scope to breast cancer.
ResultsThere is a lack of consensus among experts regarding which genes among many should be tested in different clinical scenarios. There is also variation in the degree of consensus regarding the understanding of risk and appropriate clinical management of mutations in many genes.
ConclusionsGenetic testing should be made available to all patients with a personal history of breast cancer. Recent data are reviewed that support genetic testing being offered to each patient with breast cancer (newly diagnosed or with a personal history). If genetic testing is performed, such testing should include BRCA1/BRCA2 and PALB2, with other genes as appropriate for the clinical scenario and family history. For patients with newly diagnosed breast cancer, identification of a mutation may impact local treatment recommendations. Patients who had genetic testing previously may benefit from updated testing. Genetic testing should be made available to patients without a history of breast cancer who meet National Comprehensive Cancer Network guidelines. Finally, variants of uncertain significance are not clinically actionable and these patients should be managed based on their individual risk factors.
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