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Purpose: To evaluate the prognostic significance of primary tumor location and to examine whether the effect of adjuvant radiotherapy on survival varies according to tumor location in women with axillary node-positive (ALN+) breast cancer (BC). Patients and Methods: Data were abstracted from the SEER database for 24,410 women aged 25–95 years, diagnosed between 1988–1997 with nonmetastatic T1–T2,...
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