Breast and nail surgery refers to thyroid breast surgery, also known as two gland division in some hospitals, which is a sub-discipline of general surgery, focusing on thyroid and breast diseases that require surgical treatment. Diseases that usually require breast and nail surgery include the following categories: a. Thyroid diseases, including thyroid nodules, thyroid adenomas, and thyroid cancer, all of which require surgery to treat. Patients with hyperthyroidism who have failed to respond to oral anti-thyroid medication can also undergo surgery. Second, breast diseases, including breast enlargement, breast nodules, breast cancer, and breast adenoma, require surgical treatment. Acute mastitis, although not necessarily requiring surgical treatment in its early stages, also falls within the scope of surgical treatment of breast and nail.