Sentinel lymph node biopsy (SLNB) is standard of care for clinically negative operable breast cancer. However, the best technique intra-operative assessment SLN still remains a matter research. Accuracy frozen section (FS), which widely used detecting metastasis in varies from 79 to 89% with false rate being 5.5 43%. This study was hence done evaluate if combined intraoperative FS and imprint c...