Breast Cancer Diagnosis, Breast Cancer Screening
Conditions
Keywords
Mammography, ultrasound, breast cancer screening, early diagnosis
Brief summary
Improving the early diagnosis of breast cancer can reduce mortality. With mammography as the main tool for screening early breast cancer, the characteristics of dense breast and young onset of disease in Chinese women lowers the efficiency. The aim of this prospective study was to compare which method, x-ray or ultrasound, is more appropriate for screening and early diagnosis of breast cancer in Chinese women.
Detailed description
Breast cancer has become the most common malignancy in women. Improving the early diagnosis of breast cancer can reduce mortality. Mammography is recommended as the main tool for screening and early diagnosis of breast cancer in the guidelines of European and American countries. However, the characteristics of dense breast and young onset of disease in Chinese women make the screening and early diagnosis strategies of Western countries, which are mainly based on mammography, unsuitable for Chinese women. The aim of this prospective study was to compare which method, x-ray or ultrasound, is more appropriate for screening and early diagnosis of breast cancer in Chinese women.
Interventions
Patients screened by both mammography and ultrasound.
Sponsors
Study design
Eligibility
Inclusion criteria
* Informed consent, subjects 35-70 years old, asymptomatic, able to undergo ultrasound and x-ray
Exclusion criteria
* Localized breast erythema and ulceration, pregnancy, lactation, after previous breast implantation, already pathologically definite breast cancer patients
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| screening yield | 3 years | The sensitivity, specificity, positive predictive value, and negative predictive value of the screening methods. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| cost-effectiveness | 3 years | The cost-effectiveness of each screening modality to detect one case of breast cancer |
Countries
China