Few years ago i was surgery tumor in my right breast that size is 2.3 cm. now new tumor in my left breast that size is 2.16 cm. what is the treatment?

What kind: Of breast tumor did you have before? Was it a benign fibroadenoma? How was the first one found? Have you had breast ultrasound testing? Likely you have another benign breast fibroadenoma. But without knowing much more detailed clinical information i cannot give you instructions on what to do. See a doctor for an exam ; get their recommendations.