In the study that will be held at Bezmialem Vakif University Medical Faculty, General Surgery Department, 20 unifocal and 20 multifocal breast cancer patients will be included. Tissues will be taken from both tumoral and normal breast tissues and they will be saved in microRNA later solution under -80°C. Then, 84 microRNA's will be studied in these tissues to see if they express any of these microRNA's.
