4. Breast Cancer:
Breast cancer, also known as the "pink killer," has the highest incidence among malignant tumors in females. It is characterized by uncontrolled proliferation of epithelial cells in the mammary glands under the action of various carcinogenic factors. Early symptoms include breast lumps, nipple discharge, and enlarged lymph nodes. As the condition worsens, it gradually spreads to other organs and tissues, threatening the patient's life. Both men and women can develop breast cancer, but the incidence rate is higher in females.
