Clear borders of breast nodules means that there is a clear demarcation line around the nodule that can be distinguished from the surrounding tissues, meaning that the cells inside the nodule do not show outward invasion and therefore are mostly benign. The internal echogenicity, on the other hand, means that the internal components of the nodule are more complex and may show conditions such as calcification, which has a tendency to become malignant, but some benign breast nodules may also show this condition. Therefore, ultrasound descriptions of breast nodules with clear borders and uneven internal echogenicity can be considered benign occupying lesions such as hyperplastic nodules, breast fibroids, and intraductal papillomas.1. Hyperplastic nodules: When the nature of a hyperplastic nodule is mixed, that is, a cystic nodule, it can usually show uneven internal echogenicity and usually has clear breast nodule borders when malignancy has not occurred. Asymptomatic nodules usually do not need to be treated, if there are obvious symptoms can be alleviated by taking breast health pills, breast fetish elimination capsules, etc.; 2, breast fibroids: fibroids usually consist of fibrous hyperplastic tissue and glandular ducts, so the internal echogenicity is not uniform, and the disease is benign lesions, usually breast nodules with clear borders and internal echogenicity can be treated clinically by surgery; 3, intraductal Papilloma: Intraductal papilloma, mainly composed of dilated ductal wall, ductal epithelium and vascular connective tissue, is a lesion formed by dendritic and papillary hyperplasia, and treatment is also usually surgical.