Abstract: “Breast cancer is the leading cause of deaths among female cancer patients. Breast cancer can be diagnosed in several ways such as imaging or mammography, clinical breast exam, breast self examination and surgery. In breast cancer diagnosis, the radiologist mainly uses their eyes to discern cancer when they screen the mammograms. Mammography is the most effective technique for breast cancer screening and detection of abnormalities. Calcification and masses are most common abnormality found in breast cancer. The aim of this paper is to conduct a comprehensive review of mammogram image enhancement methods to early detection of breast cancer.”

Keywords: Mammogram enhancement, Image calcification, detection,Breast mass detecion, Dyadic wavelet transform, image enhancement and denoising, Microcalcification detection.