Breast cancer

02 May 2013

Implants may delay breast cancer detection

Breast implants can make it more difficult to diagnose breast cancer early because they block some areas of the breast on mammograms, experts say.


Women with breast implants could run the risk of having breast cancer diagnosed at later stages, when survival might be worse, according to Canadian researchers.

Breast implants can make it more difficult to diagnose breast cancer early because they block some areas of the breast on mammograms, experts say.

"Women who currently have breast implants and those considering breast augmentation should be aware of the possible long-term health effects of cosmetic breast implants," said lead author Eric Lavigne, a PhD graduate in epidemiology with the faculty of medicine at University Laval, in Quebec City.

"They should also be reassured that physicians and other health professionals will continue to offer the best medical practices to these women," he added.

To see whether breast implants had an effect on breast cancer diagnosis and survival, Lavigne's team reviewed studies published after 1993. This process, known as a meta-analysis, attempts to find a consistent pattern from different studies. In many cases, these patterns aren't the focus of or apparent from each individual study, but emerge only after the data are combined.

In this case, by analysing 12 studies, the researchers found that women with breast implants had a 26% increased risk of being diagnosed with late-stage breast cancer compared to women without implants.

When Lavigne's group looked at another five studies, they found that women with breast implants had a 38% increased risk of dying from breast cancer than women without implants.

This finding "may be explained by the advanced breast cancer diagnosis received," Lavigne said.

Family history

These results, however, need to be interpreted with caution since only a small number of studies were included in this summary, and many factors in each study can affect the overall results, he said.

Although the analysis linked breast implants to later-stage breast cancer diagnoses, it did not establish a cause-and-effect relationship.

Dr Stephanie Bernik, chief of surgical oncology at Lenox Hill Hospital in New York City, said she will be more cautious with patients.

"Patients ask if it's OK to do implants," Bernik said. "We don't tell them not to, but they have to understand that it comes with a risk of obscuring some of the breast tissue."

If someone has a family history of breast cancer, they should be cautious, Bernik said. "Everybody should be informed that there is this problem," she said. "It will limit the ability for cancer detection with mammography."

Bernik suggested that women with breast implants also have an ultrasound or MRI to get around the problem of the implant hiding breast tissue during a mammogram. She said, however, that for this purpose MRIs aren't covered by insurance.

More information

To learn more about breast cancer, visit the American Cancer Society.

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Breast cancer expert

Dr Gudgeon qualified in Birmingham, England, in 1968. She has more than 40 years experience in oncology, and in 1994 she founded her practice, Cape Breast Care, where she treats benign and malignant breast cancers. Dr Boeddinghaus obtained her qualification at UCT Medical School in 1994 and her MRCP in London in 1998. She has worked extensively in the field of oncology and has a special interest in the hormonal management of breast cancer. She now works with Dr Gudgeon at Cape Breast Care. Read more.

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