There are many arguments that can be made for either having or not having the other breast removed. Many women choose to have the opposite breast removed. This may reduce their risk of breast cancer recurrence and may allow you to achieve better symmetry in reconstruction. Some women choose a bilateral mastectomy if they feel that the healthy breast will require extensive adjustment to achieve a symmetrical look in reconstruction. Others choose to undergo prophylactic or preventative mastectomy of the opposite breast to avoid the ongoing testing required when the other breast is not removed. After a mastectomy you will no longer need to undergo sonograms, MRIs, or ultrasound testing.