Enlarged lymph nodes in the paratesticular breasts may be caused by breast hyperplasia, breast cancer and other reasons. 1. Breast hyperplasia: generally refers to the formation of substantial benign proliferative diseases of the breast during the development of female breasts, manifested by symptoms such as breast pain, breast lumps, nipple discharge, etc. Compliance with the doctor’s advice can be treated with drugs such as progesterone, tamoxifen, toremifene, etc., or with methods such as local excision of breast lumps, regional excision and mastectomy. 2. Breast cancer: generally refers to malignant tumors occurring on the epithelial tissues of the breast, manifested by symptoms such as breast lump, nipple inversion, distant metastasis of breast cancer, etc. It can be treated with drugs such as cyclophosphamide, methotrexate, fluorouracil, adriamycin and so on according to doctor’s prescription, or it can be treated by preserving the breast surgery or radical mastectomy for breast cancer. When the paratesticular lymph node swelling needs to go to the hospital in time to confirm the diagnosis, under the guidance of the doctor’s instructions for standardized treatment.