Precautions l.Age（年龄)：After 18 years of age 2.The time of examination(检查时间)： postmenopausal women a fixed day of each month premenopausal women:5-7 days after menstruation 3.Dynamism(力度) 4.Lymph nodes(淋巴结) 5.physical examination(体格检查)：molybdenum target or ultrasonography 南方医科大学护理学院 南方医科大学护理学院 Precautions 1.Age（年龄）: After 18 years of age 2 .The time of examination（检查时间）： postmenopausal women : a fixed day of each month premenopausal women: 5-7 days after menstruation 3. Dynamism（力度） 4 .Lymph nodes（淋巴结） 5. physical examination（体格检查）：molybdenum target or ultrasonography