Maryland Law Mandates Mammogram Disclosure of Heart Disease Risk

A new law enacted in Maryland mandates that radiologists must inform patients if their mammogram results indicate the presence of calcium deposits within blood vessels. This legislative change, which took effect on July 1, 2024, aims to enhance patient awareness of potential cardiovascular risks that can be incidentally detected during routine breast screenings. The requirement stems from growing recognition within the medical community that mammograms can offer insights into a patient's overall vascular health, beyond their primary purpose of detecting breast cancer.

Dr. Lisa Mullen, a radiologist who has been advocating for such measures, explained the significance of these findings in an interview with NPR. She highlighted that the identification of coronary artery calcification (CAC) on mammograms, while not a diagnostic tool for heart disease itself, serves as a crucial warning sign. CAC indicates the buildup of plaque in the arteries supplying blood to the heart, a known risk factor for heart attacks and other cardiovascular events. Historically, these findings were often not explicitly communicated to patients unless they were directly related to breast pathology, leading to missed opportunities for early intervention.

The Maryland law requires radiologists to include specific language in their reports to patients, alerting them to the presence of calcifications and advising them to discuss these findings with their primary care physician or a cardiologist. This proactive approach is intended to encourage further cardiac evaluation and risk assessment. The law is expected to impact a significant number of women, as mammograms are a standard screening tool for breast cancer, particularly for those over the age of 40. The incidental detection of vascular calcification is not uncommon; studies have shown that a substantial percentage of mammograms reveal these signs.

Proponents of the law argue that it aligns with a more holistic approach to patient care, where all potentially significant health information gleaned from diagnostic imaging should be shared. By flagging these cardiovascular indicators, healthcare providers can potentially intervene earlier, implement lifestyle modifications, or prescribe preventative medications, thereby reducing the incidence of heart disease, which remains a leading cause of mortality for women. The implementation of this law is anticipated to foster greater collaboration between radiologists, primary care physicians, and cardiologists, ensuring a more comprehensive management of patient health.