Histopathological and Tumor Characteristics Associated with False Negative Axillary Ultrasonography Results in Breast Cancer.

Aims: As the false-negative rates of axillary ultrasonography (AUS) (21%-48%) are not optimal, the demand for axillary surgery remains even if AUS is negative. The aim of this study is to determine the histopathological and tumor characteristics associated with false-negative AUS results.

Materials And Methods: Patients with normal AUS were divided into two groups as true-negative and false-negative according to the histopathology results of axillary lymph nodes.