i was feeling a lump in my left breast for an year. 2 months ago, i felt that its size became double. so i was worried and two weeks ago i had a doctor's appointment and she recommened ultrasound.

ultrasound report tells that there is a well defined hypoechoic nodular measure 3.8*2.3cm, is seen at upper outer quadrent of left breast at 2 degree clock position. it has smooth contours and not fixed to underlying tissues. it is likely a fibroadenoma.

i have never feel any pain but feeling pain in that breast for two days which makes me more worried.

does it cause cancer or tumor? should i put it out from surgery?