Introduction: Breast cancer is the most frequently diagnosed cancer as well as the leading cause of cancer death in women worldwide. As it is progressively affecting more women in productive age group, it is of utmost importance to help diagnose the disease at the earliest. Aims: To find the accuracy of ultrasound in diagnosis of benign and malignant breast masses and to correlate the benign and malignant ultrasound features with tissue diagnosis. Materials and Methods: The present study was a hospital based descriptive epidemiological study with cross sectional design. This Study was conducted from October 2021 - September 2022 at Department of Radiology, Murshidabad Medical College & Hospital. Total 94 patients were included in this study. Result: Right breast was slightly more involved (44.7%) than left breast (40.4%) among the study participants. Upper outer quadrant of breast was commonest location for involvement (59.6%). FNAC suggests proportion of malignant breast lesion among 26.6% of the study participants. Conclusion: Ultrasound was able to diagnose all the malignant cases missed by FNAC and in case of indeterminate reports by ultrasound FNAC was able to diagnose benign and malignant lesions accurately.