The treatment for hard nodules inside the body varies depending on the location. If a nodule occurs in the thyroid or breast, it is important to come to the hospital for an examination to determine the benignity or malignancy of the nodule first. For small benign nodules, they can be followed up or removed. For large benign nodules, surgery will be performed to remove them. If the nodule is considered to be malignant in the preoperative examination, radical surgery is required. After radical surgery for thyroid cancer, endocrine therapy is required, and after radical surgery for breast cancer, chemotherapy is required, and endocrine therapy can also be performed. If there is a lump in the abdominal cavity, it means that there is a mass in the abdominal cavity, and CT or gastroscopy or enteroscopy should be performed to understand the source of the mass, and surgery should be performed to remove the mass after it occurs.