Fatemeh Homaei Shandiz - Department of Oncology Radiotherapy, Faculty of Medicine , Omid and Qaem Hospital, MashhadUniversity of Medical Sciences, Mashhad, Iran
Mahdi Rivandi - Department of Modern Sciences & Technologies, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
Fahime Afzal Javan - Student Research Committee, Faculty of Medicine, Mashhad University of Medical Sciences,Mashhad, Iran
Sahar Ardalan - Department of Modern Sciences & Technologies, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran

Among cancer types, breast cancer is the second most common cause of death in women globally. Breast cancer involvements are seen more frequently in the left side compared to the right side. We aimed to analyze whether the laterality ratio is associated with the disease outcome.Recorded data of patients who visited an oncologic clinic in Mashhad in a period of 4 years were analyzed and required data including age, gender, involved side, metastasis status, and recurrence were extracted. All collected data were analyzed using SPSS version 21. The data of 855 patients including 842 females and 13 males were evaluated. Average age of the patients was 49.70 ± 0.42 and median was 48 years. In 52.4% and 46.3% of patients, left or right breast was involved respectively. 1.3% of patients had both breasts involvement. No significant correlation between the involved breast side and either the disease recurrence (p=0.675) or metastasis (p=0.791) was identified. In contrast to the results of some studies in other populations, our results indicated some of the disease outcomes such as recurrence or metastasis were not related to the tumor laterality of the breast cancer in our population.

Breast Cancer, Metastasis, Recurrence, laterality