Mammographic density changes in surgical weight loss-an indication for personalized screening

Area of Science:

• Radiology
• Oncology
• Bariatric Surgery

Background:

• Obesity and high mammographic density (MD) are independent risk factors for breast cancer.
• The impact of surgical weight loss on MD requires further investigation.

Purpose of the Study:

• To evaluate the effect of bariatric surgery on mammographic density.
• To assess changes in breast cancer risk factors following surgical weight loss.

Main Methods:

• Retrospective study of patients undergoing bariatric surgery and screening mammography.
• Collection of demographic data, comorbidities, and breast cancer risk assessments.
• Mammographic density categorized by fellowship-trained breast radiologists before and after surgery.

Main Results:

• Mean weight loss was 28.7 kg, significantly reducing BMI (p < 0.01).
• Mammographic density remained unchanged in 53 patients, decreased in 1, and increased in 9 (14%).
• Patients with increased MD had significantly greater weight loss (37.7 kg vs. 28.7 kg, p < 0.01).

Conclusions:

• Surgical weight loss led to increased mammographic density in 14% of patients.
• Increased MD can obscure malignancies, necessitating consideration of supplemental screening.
• Risk assessments incorporating MD may aid in personalized breast cancer screening strategies.