SAN ANTONIO - Contrast-enhanced digital mammography is comparable to breast MR in evaluating residual breast cancer after neoadjuvant endocrine therapy or chemotherapy, according to the results of a study presented by Mayo Clinic researchers today at the 2017 San Antonio Breast Cancer Symposium.
"Our study aimed to compare contrast-enhanced mammography with breast MR 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."
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.
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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.
"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.
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About Mayo Clinic Cancer Center
As a leading institution funded by the National Cancer Institute, Mayo Clinic Cancer Center conducts basic, clinical and population science research, translating discoveries into improved methods for prevention, diagnosis, prognosis and therapy.
About Mayo Clinic
Mayo Clinic is a nonprofit organization committed to clinical practice, education and research, providing expert, comprehensive care to everyone who needs healing.
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