Mammograms are generally interpreted in relation to the composition of the breast, the margins, shape and density of the lump, as well as signs of calcification, axillary lymph nodes and skin. 1. Breast composition: According to the overall density of breast tissue, it can be categorized into fat type, small amount of glandular type, large amount of glandular type and dense type. The massive glandular type, also known as the unevenly dense type, obscures small masses, while the dense type reduces the sensitivity of the mammogram. 2. Lump: The margins, shape, and density of the lump can be used to initially determine the risk of malignancy of the nodule. Irregular shapes, blurred margins, or burrs are signs of suspected malignancy. 3. Calcification: Mammography is the most sensitive to calcification in breast imaging and can also be used to initially determine the risk of malignancy. Amorphous, rough, inhomogeneous, and small calcifications are suspicious for malignancy, while coarse, popcorn, and round calcifications are typical benign signs. 4. Others: attention may also be paid to the condition of the axillary lymph nodes, whether there is structural distortion, skin thickening, skin retraction, nipple retraction, etc. The mammogram report will assess the risk of malignancy of the nodes based on the above, and ultimately perform RI-RADS (Breast Imaging Reporting and Data System) classification to guide the subsequent management. Patients are advised to consult their specialists for further investigations and treatment as prescribed.