乳腺癌发病率呈上升趋势，年轻患者数量增多！早期有哪些症状？

Core Viewpoint - Breast cancer is the most common malignant tumor among women globally, with an increasing incidence rate, approximately 2.3 million new cases reported annually according to the World Health Organization [1] Group 1: Incidence and Demographics - The incidence of breast cancer is rising both globally and in China, with a notable increase in younger patients [3] - Breast cancer typically occurs more frequently in women around the ages of 55 to 60, with a secondary peak in women around 40 years old [3] - Younger breast cancer patients tend to experience faster disease progression and a higher likelihood of lymph node metastasis [3] Group 2: Symptoms and Self-Examination - The primary symptom of breast cancer is a breast lump, with about 80% of patients presenting with this symptom at diagnosis [5] - Most early-stage breast cancer patients do not exhibit obvious symptoms, making regular self-examination crucial [5] - Recommended self-examination frequency is once every one to two months, including visual checks for skin changes and nipple discharge [7] Group 3: Screening and Diagnosis - Due to the uncertainty of self-examinations, regular hospital screenings are essential, including ultrasound, mammography, MRI, and ductoscopy [9] - Early-stage breast cancer often presents with calcifications that are difficult to detect via ultrasound, necessitating mammography for accurate diagnosis [9] - It is advised that women over 40 undergo mammography screenings every one to two years, especially if abnormalities are detected on X-rays [11]