Bone Marrow Micrometastases Do Not Impact Disease-Free and Overall Survival in Early Stage Sentinel Lymph Node–Negative Breast Cancer Patients

Background The presence of lymph node metastases is the most important prognostic factor in early stage breast cancer. Whether bone marrow micrometastases (BMM) impact the prognosis in sentinel lymph node (SLN)–negative breast cancer patients remains a matter of debate. Therefore, the objective of this study was to assess the impact of BMM on 5-year disease-free and overall survival among those patients.