Modern breast enlargement surgery is low risk. There is, however, no such thing as risk-free surgery. The important thing is to understand all of the potential risks and take the appropriate steps in order to avoid them. Any surgical procedure carries some risk of infection, severe bruising, or reaction to anaesthesia.
In the case of breast augmentation surgery, there is also the possibility of complications related to the breast implant, such as rupture, rippling, or capsular contracture. Risks include:
Capsular contracture (a tightening of the scar tissue which can make the breast feel hard and can distort the shape of the breast implant).
Changes in nipple and breast sensation (usually temporary).
Breast pain
Rare implant leakage or rupture