One boob way bigger than the other
A common abnormality seen on mammogram results is breast asymmetry. Breast asymmetry is usually no cause for concern. Breast asymmetry occurs when one breast has a different size, volume, position, or form from the other. Breast asymmetry is very common and affects more than half of all women. Another cause for asymmetrical breasts is a condition called juvenile hypertrophy of the breast. Though rare, this can cause one breast to grow significantly larger than the other.