Cysts of the right breast are a common benign disease and a form of mastopexy. It is a cystic lesion that eventually forms due to the dilatation of the milk ducts. Patients may present with a dense mass of the mammary gland with a tender texture or with tenderness, and ultrasonography may show a hypodense lesion with an intact envelope. Some patients may be prone to secondary intracapsular infection, which can be painful. If necessary, for example, the lesion gradually increases in size, affecting the aesthetics or pain, and there is no significant improvement after medication, surgical treatment can be chosen, usually under anesthesia to remove the lesion. The occurrence of breast cysts is related to lifestyle habits and irregular enlargement of the mammary glands.