Which density descriptors are presented together in the material?

• A. Fatty replaced and Dense
• B. Lymph nodes and Edge shadow
• C. Pectoralis muscle and Cooper's ligaments
• D. Rib and chest wall muscle and Lymph nodes

Answer: (A)

Density descriptors describe how much fat versus fibroglandular tissue is present in the breast. The material you’re studying uses terms that span the spectrum from mostly fat to dense fibroglandular tissue. “Fatty replaced” signals that fat has largely replaced glandular tissue, indicating lower density, while “dense” indicates substantial fibroglandular tissue and higher density. These two terms are paired because they are both descriptors of tissue composition, representing opposite ends of the density spectrum.

The other options refer to anatomy or imaging signs rather than density descriptors—structures like lymph nodes, pectoralis muscle, Cooper’s ligaments, ribs, chest wall muscles, or edge shadow are anatomical features or imaging artifacts, not terms describing breast density.