Lymph node ratio can further stratify prognosis in subpopulations of breast cancer patients with axillary nodal metastases.

Breast cancer (BC) is the most common cancer in women worldwide and affects one in eight women in the UK at some point in their lifetime. Advances in treatment have led to greatly improved survival rates. Management of axillary lymph node (LN) metastases has been a controversial but evolving area of BC therapy. Positive LN status is of vital importance in determining long-term outcomes. Recent studies have shown that it is not only the absolute number of involved LNs, but also the ratio of metastatic to examined LNs (or LN ratio [LNR]) that confers prognostic information. In the evaluated article, a population-wide study was performed to elucidate the influence of LNR on mortality risk in Dutch BC patients. LNR was an independent prognostic factor, but was not better than current tumor, node, metastasis pathological nodal staging. It was, however, able to discriminate subpopulations within pathological nodal categories. In this article we examine the use of LNR in BC.

The importance of pre-operative axillary ultra-sound and intra-operative sentinel lymph node frozen section analysis in patients with early breast cancer--a 3-year study.

INTRODUCTION: To ensure appropriate axillary surgery is performed at a single operation, we have sought to identify patients with involved nodes who might progress directly to axillary dissection. PATIENTS AND METHODS: We evaluated pre-operative ultrasound of the axilla and intra-operative frozen section of sentinel lymph nodes over a 3-year period. Patients with clinical early breast cancer underwent axillary ultrasound. Abnormal nodes were defined as a cortex > 2.5 mm, loss of high echogenic medulla, and morphological changes. Any axilla containing a lymph node considered abnormal had ultrasound-directed fine needle aspiration (FNA) performed. Patients with positive cytology proceeded directly to axillary dissection. Patients with negative cytology and those with normal ultrasound proceeded to sentinel four-node biopsy using Patent Blue dye alone. A single sentinel node was evaluated by intra-operative frozen section. RESULTS: A total of 311 patients underwent pre-operative ultrasound successfully, identifying 115 (77%) patients of the total 150 who were found to have positive lymph nodes. Overall, 196 patients underwent sentinel lymph node biopsy analysis intra-operatively. Of the 11 false negative cases in which the lymph node was found to be positive postoperatively, eight cases showed the single tested sentinel node contained cancer that was recognised on postoperative staining but not frozen section. In six, the deposit in the sentinel node was a micrometastasis. Three cases were found to contain cancer in the 'non-sentinel' node; in all, this was micrometastatic disease. CONCLUSIONS: This study confirms the value of pre-operative ultrasound and intra-operative frozen section examination of axillary nodes. Only 3.5% of patients required two operations.