There are hard lumps in the breast for more than 10 years, which are mainly considered to be related to factors such as breast hyperplasia, breast cysts and breast tumors. 1. Breast hyperplasia: It is a benign breast disease that can lead to hard lumps and lumps in the breast. Some patients may also experience discomfort such as pain. 2. Breast cysts: can be single or multiple, mostly without obvious symptoms, secondary infection can lead to localized swelling and pain. 3. Breast tumor: hard lumps persist for more than ten years, mainly considered as benign tumors, such as breast fibroids, etc., which can cause this disease. At the same time, breast tuberculosis, breast hyperplasia, non-lactating mastitis, and even slow-developing breast cancer can also appear as hard lumps in the breast for more than 10 years. It is recommended that patients who find hard lumps in the breast should seek medical treatment in time, and after a clear diagnosis, standardize the treatment under the guidance of the doctor to avoid delaying the condition.