Benign breast nodules are generally not malignant, with the chance of malignancy ranging from less than 5% to 10%. Benign breast nodules usually develop from breast glands and have a chance of getting worse. When a breast lump is diagnosed as benign, the chance of it becoming malignant is usually less than 5 percent. Common benign breast nodules include breast lipoma, cystic hyperplasia and fibroadenoma. Breast lipomas and cystic hyperplasia are not malignant, while fibroadenomas are malignant, but the likelihood of malignancy is very low, usually less than 5%. In addition, benign breast nodules should also be considered as intraductal papillomas of the breast, which have a lifetime malignancy rate of 8% to 10%. If benign breast nodules are detected, breast ultrasound or molybdenum target examinations should be performed regularly to keep benign breast nodules under constant observation. Once changes occur, targeted treatment should be carried out as early as possible under the guidance of specialized doctors.