Breast cancer is often called "pink killer", and its incidence ranks first among female malignant tumors, while male breast cancer is relatively rare. With the improvement of medical level, breast cancer has become one of the most effective solid tumors. Medical records in Song Dynasty indicate that breast cancer (Ru Yan) can last for 14 years without any treatment.
Breast cancer:
Breast cancer is a phenomenon that mammary epithelial cells proliferate out of control under the action of various carcinogens. The early stage of the disease is often manifested as breast lump, nipple discharge, axillary lymph node enlargement and other symptoms. Advanced cancer cells may metastasize far away, leading to multiple organ diseases, which directly threaten the life of patients.