ABSTRACT
Breast cancer includes 32% of women's cancer is the most common malignancies in women and is the reason for 19% of cancer-dependent mortality. The aim of this study was comparison between some breast cancer risk factors in patients with breast cancer and leukemia in Ahvaz Shafa Hospital. In this retrospective and analytic study,167 patients with breast cancer were compared with 317 patients with leukemia in a two- year period. The risk factors included age, OCP usage, smoking, positive familial history of breast cancer and positive history of benign breast disease. Odds ratio index was used for statistical data analysis. Breast cancer was seen more in 41 to 50 years old women. Familial history of breast cancer and history of benign breast disease were effective risk factors and smoking and, OCP usage increased the risk of developing breast cancer in our study. The results showed that some of the breast cancer risk factors are preventable, such as changes in lifestyle, regular examinations, especially about persons with a familial history of breast cancer or benign breast diseases which in turn can influence early diagnosis. Screening tests such as mammography are also useful in early diagnosis and improved prognosis of breast cancer