Global asymmetry in breast tissue is a form of breast asymmetry where at least one quadrant of a breast has a larger amount of fibroglandular density than the corresponding area in the contralateral breast. There is no mass, suspicious calcification, or architectural distortion.
This can occur from a number of causes:
- normal variation (most common) 2
- surgery +/- breast reduction to the opposite breast
- pseudoangiomatous stromal hyperplasia (PASH)