Increased density of breast tissue, most often due to hormonal changes, which cause the breast to feel lumpy in texture. This finding is called normal nodularity, and it usually occurs in both breasts.

Increased density of breast tissue, most often due to hormonal changes, which cause the breast to feel lumpy in texture. It usually occurs in both breasts and is not a risk factor for breast cancer.

The volumetric proportion of spheroid or nodular graphite to total graphite in a ductile iron or a compacted graphite iron matrix.