The discovery of nodules in the breast is an abnormal situation and requires timely hospital visits to diagnose the nature of the specific nodule and further treatment if necessary. The only effective treatment is surgical removal. 2. Breast cysts are also benign tumors, mostly due to cystic changes in the dilated ducts of the breast, mostly accompanied by breast hyperplasia. 3. Breast cancer is painless with no symptoms, unclear boundary and poor mobility, and can be diagnosed by ultrasound and mammography.