Scoring system for prediction of having three or more involved axillary nodes for breast cancer.

1133 Background: Completion axillary lymph node dissection (ALND) is currently the standard of care in the event of a positive sentinel lymph node biopsy (SLNB). However, result from Z0011 indicate that women with a one or two involved axillary nodes and clinical T1-T2 tumors undergoing lumpectomy with radiation therapy followed by systemic therapy do not benefit from completion of ALND in terms of survival. The purpose of this study was to define possible predictors of having three or more involved axillary node to provide information for surgeons making decision about sparing intraoperative frozen section analysis of sentinel lymph node and completion ALND. Methods: We reviewed the records of 1215 patients with clinical T1-T2 invasive breast cancer. None of these patients were in situ cancer on initial gun biopsy nor received neoadjuvant chemotherapy. Factors associated with having three or more involved axillary nodes were evaluated by univariate and multivariate logistic regression analysis. Results: ...