Behnam Kadkhodaei - Dept. of Radiation Oncology, Shiraz University of Medical Sciences, Shiraz, Iran
Ahmad Mosalaei - Dept. of Radiation Oncology, Shiraz University of Medical Sciences, Shiraz, Iran
Shapour Omidvari - Dept. of Radiation Oncology, Shiraz University of Medical Sciences, Shiraz, Iran
Mansour Ansari - Dept. of Radiation Oncology, Shiraz University of Medical Sciences, Shiraz, Iran
Mohammad Mohammadianpanah - Dept. of Radiation Oncology, Shiraz University of Medical Sciences, Shiraz, Iran
Niloofar Ahmadloo - Dept. of Radiation Oncology, Shiraz University of Medical Sciences, Shiraz, Iran
Hamid Nasrollahi - Dept. of Radiation Oncology, Shiraz University of Medical Sciences, Shiraz, Iran
Seyed Hassan Hamedi - Dept. of Radiation Oncology, Shiraz University of Medical Sciences, Shiraz, Iran
Mehdi Shariat - Breast Diseases Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
Mozhdeh Zamani - Autophagy Research Center, Shiraz University of Medical Sciences, Shiraz, Iran

Background and Objective: The lack of breast cancer screening in young women leads to late disease diagnosis and worse outcomes in this age group. This study was designed to evaluate clinicopathological features and long-term outcomes of young breast cancer women in south of Iran. Materials and Methods: This is a retrospective study of breast cancer patients who were pathologically diagnosed during ۲۰۰۵ to ۲۰۱۷. Data from ۲۸۴ breast cancer patients aged ۴۰ years or younger were included in this study. Demographic, clinicopathological properties as well as treatment modalities including type of surgery, adjuvant radiotherapy, and adjuvant or neoadjuvant chemotherapy were recorded and analyzed. Results: Median age of the patients was ۳۶ (range ۲۳-۴۰) years. After a median follow-up of ۶۸ months, ۲۱ patients had died due to the disease, ۵۹ patients were alive with the disease, and ۲۰۴ patients were alive without the disease. The univariate COX regression demonstrated that the disease -free survival (DFS) was significantly low in patients who had undergone breast conservation surgery (BCS) and also patients with higher stages, estrogen/progesterone-negative and human epidermal growth factor receptor ۲-positive (ER-/PR-/HER۲+) status. Low overall survival (OS) was also significantly associated with stage. According to multivariate COX regression, BCS, stages II, III and also young age were independent predictive factors for low DFS. Conclusion: Given the aggressive features and worse outcome of young breast cancer patients, treatment remains tough and screening seems to be required at young age. Further studies are required to find best management and therapeutic protocols for these patients.

Breast cancer, Young age, Overall survival, Disease- free survival