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As a complement to sentinel node dissection (SLND), we evaluated ultrasound-guided fine-needle aspiration (USFNA) of normal and abnormal axillary nodes in breast cancer patients. We hypothesized that USFNA would be accurate for primary breast tumors larger than 2 cm.

We retrospectively reviewed 68 patients who underwent 69 preoperative USFNAs from 2003 to 2005. The results of 65 preoperative USFNA were compared with the results of SLND or axillary node dissection (ALND) for concordance. Four USFNAs were excluded from analysis because of a complete response to neoadjuvant therapy. We evaluated whether primary tumor features (histology, size, grade, vascular invasion, estrogen/progesterone receptor status and Her-2-neu status) predicted concordance of USFNA results and the final lymph node pathology …