Technique comparison

Contrast-enhanced digital mammography vs. breast MRI

Contrast-enhanced digital mammography is comparable to breast MRI in evaluating residual breast cancer after neoadjuvant endocrine therapy or chemotherapy, according to the results of a study presented by Mayo Clinic researchers at the 2017 San Antonio Breast Cancer Symposium.

“Our study aimed to compare contrast-enhanced mammography with breast MRI in evaluating residual breast cancer in patients undergoing presurgical systemic treatment to shrink their tumor size,” says Bhavika Patel, M.D., a radiologist at Mayo Clinic's Arizona campus. “We identified patients who had both contrast-enhanced digital mammography and MRI after treatment to shrink their tumors and before additional therapy or a mastectomy.”

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Dr. Patel and her colleagues conducted a retrospective review of contrast-enhanced digital mammography cases at Mayo Clinic's Arizona campus between September 2014 and June 2016. Forty female patients met inclusion criteria. The mean age of study participants was 52.3 years. Thirty-four patients received chemotherapy, and six patients received endocrine therapy. Researchers interpreted radiographic images in a blinded fashion and compared residual size on imaging to pathology from surgical samples. Their results indicated that both imaging modalities demonstrate comparable accuracy in assessing residual cancer.

Patients find contrast-enhanced digital mammography less anxiety-provoking than MRI

Bhavika Patel

“These findings, if validated in larger studies, could potentially support the use of contrast-enhanced mammography as an alternative approach for evaluating residual cancer in the preoperative setting.” Dr. Patel says contrast-enhanced mammography is a potentially easier, faster, more accessible and more cost-effective option than breast MRI. She says Mayo Clinic's Arizona campus is one of the first sites in the U.S. to implement contrast-enhanced digital mammography. “Patients find contrast-enhanced digital mammography less anxiety-provoking than MRI, which can cause some patients to feel claustrophobic,” Dr. Patel says.


Source: Mayo Clinic

08.12.2017

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