Mammograms are graded from 1 to 6 and also include a grade 0. It is recommended that patients give the report card to a medical professional for interpretation. Mammograms are graded into six levels plus a level 0. Level 0 represents the uncertain stage, which generally needs to be judged according to other test results; level 1 represents the normalized response of the breast or normal lesions; level 2 generally indicates that benign lesions can be directly and accurately diagnosed through mammograms; and level 3 generally means that benign lesions may be present in the breast, which requires the patient to undergo regular follow-up examinations. Grade 4 indicates that the breast has shown suspicious changes and needs to be biopsied, in which grade 4 is divided into three levels, namely 4a, 4b and 4c. 4a means that the possibility of malignant tumors is small, 4b means that the possibility of malignant changes is medium, and 4c means that the possibility of malignant changes is larger. 5 means that the possibility of malignant tumors is higher, and 6 means that malignant tumors can be confirmed after examination. Some hospitals do not indicate the grade of hyperplasia or nodule after detecting breast hyperplasia or nodule, so it may be difficult for patients to read the report card, and it is recommended that patients can take the report card to a professional doctor for interpretation.