A new study showed that ultrasound combined with breast x ray photography can improve the diagnosis rate of breast cancer in women at high risk, but at the same time, the false positive rate than x ray photography alone is much higher. Ultrasound combined with x ray photography make the diagnosis rate of breast cancer 28%, but the false positive rate than x ray photography alone three times higher! These women had to accept this unnecessary biopsies.
Researchers say for sure that ultrasound and x ray photography of women in high-risk breast cancer diagnosis rate has improved greatly, especially those x ray photography showed increased breast density of women, but the apparent false-positive rate and the lack of valid evidence (ultra – Sound like x ray and CT and other imaging methods, to examine the experience of the very dependent, and different examiners may be drawn significantly different diagnosis, and it can be no effective long-term preservation, retention of evidence for human identification ) limits the use of ultrasound.
The American Cancer Society now recommends that women with breast cancer risk factors besides x-ray photography screening, but also should be added to do magnetic resonance imaging (MRI). The study results do not change the Cancer Society, the above recommendation, but ultrasound can be used as those who have risk factors, but there are magnetic resonance imaging (or MRI-guided biopsy) to check contraindications of women second choice. The American Cancer Society breast and cervical cancer Division Director Debbie. Sharon said.
This study a total of 2637 women participated in these women were 21 cancer centers across the United States to do x ray photography examination, the result is increased breast density shadow .2637 participants, half of them were in the past had received breast cancer treatment, the vast Some people have more than one immediate family member had had breast cancer. In the 12 months of monitoring, there are 40 women were diagnosed with breast cancer patients, only half of these cancers are alone detected x ray photography, while the x ray photography combined ultrasound diagnosed a total of 31 patients. 40 cancer patients, there is neither a 9 by x ray photography, nor is it diagnosed by ultrasound, but after two years follow-up found.
Joint use of ultrasound and x ray photography of women, 1 / 10 after the women after breast biopsy proved to be false positives, and those who only accept x ray photography of women, only 40 individuals have been identified as a false positive.
x ray photography still needs to
Large-scale study confirmed the x ray photography in the diagnosis of breast cancer in women at high risk of poor performance, in particular those of women the breast is especially true of high-density shadow. However, in the foreseeable future, x ray photography of breast cancer screening will continue to be the basic means and tools. But it did more and more evidence suggests that the majority of women,, x ray photography can not make the most accurate diagnosis, x ray photography is the best tool for early diagnosis of breast cancer such as ductal carcinoma in situ. Therefore, it is still necessary, even if the ultrasound and MRI are widely used. Each breast was high-density shadow of the woman should receive ultrasound examination, it may not be used as screening tools, but the study tells us that it really useful.
