Breast cancer and type-B ultrasonic
Breast screening can find a large number of asymptomatic early stage breast cancer, but women of all ages for breast-screening method is not the same, suggesting that young women under the age of 35, can be treated as the preferred breast B-census methods; conducted once a year over 40 years old breast molybdenum target X-ray examination.
At present, the internationally recognized Mammography X ray camera is the most effective means of breast screening. European and American countries have adopted molybdenum target X ray screening for several decades, found a high diagnostic accuracy can be observed in the clinical touch less than a mass of early breast cancer, early diagnosis rate of 85%.
Therefore, the U.S. experts recommended that women from the age of 40 once a year Mammography X-ray examination after the age of 60 for every 1 ~ 2 years inspections. At high risk of breast cancer, if family history of breast cancer, precancerous lesion, as well as adolescent women who have received radiation to begin Mammography X ray may be appropriate to advance the age of the census, census interval should consult the specialist.
But the molybdenum target X ray camera accuracy of diagnosis of breast disease will be affected by the degree of breast density effects. Young women because the glands dense, fibrous tissue rich, usually manifested the shadow of the entire breast was dense, the lack of contrast levels. Therefore, the age of 35 women to the value of molybdenum target X-far less meaning, women over 35 years of age.
Coupled with more than young women with fibroadenoma, lobulated tumors, cysts, and lobular hyperplasia. For these diseases, breast ultrasound B can not only shows more clearly than mammography, but also identify some tumor benign or malignant. Therefore, young women under the age of 35, can be B-breast screening as the preferred method.
In addition, breast magnetic resonance (MRI) is also very accurate breast diagnosis, but more expensive to check a long time, generally recommended only significant family history of young women (there are two or more relatives with breast cancer) to do the check.