The sentinel lymph node (SLN) is the hypothetical first lymph node or group of nodes draining the primary tumor. The metastasis of SLN in breast cancer suggests a poor prognosis. Preoperative accurate diagnosis can provide an important reference for determination of a treatment regimen. Lymphatic contrast-enhanced ultrasound (CEUS) to locate and characterize SLN of breast cancer is a new imaging diagnostic method in recent years. Its advantages are accurate
simple
and economical
and can guide the SLN biopsy in real time. This article reviewed the progress of lymphatic CEUS in the localization and characterization of SLN in breast cancer