Background: Axillary lymph node dissection (ALND) has been the standard treatment of breast cancer axillary staging in India. The limited facilities of radioisotope tracer and isosulfan or patent blue dye (PBD) have been the major obstacles to perform sentinel node biopsy (SNB) in our country. Hence, we studied the application of 1% methylene blue dye (MBD) alone for SNB to overcome the problem. The study's main goal is to assess the identification rates and negative predictive value (NPV) of SNs in predicting axillary metastases using only 1 percent MBD