الفهرس 
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Abstract
Background: Breast cancer is the most common cause of women morbidity and cancer-related mortality across the world. Breast cancer is multifactorial disease and one of its postulated risk factors is breast density for non–familial breast cancer.
Objective: To detect the relationship between different breasts mammographic densities and risk for breast cancer in Egyptian females.
Patients and Methods: Cross-sectional study and performing a mammographic imaging for female patients that were recruited from Ain Shams university hospital and the national project for women health and private centre.
Results: There is a statistically significant difference between the type of breast density among the females diagnosed with breast cancer, where 42.8% of the females having breast cancer had a type B density, while 6% of the females had type D. Three types of breast densities increased the risk of breast cancer, where patients with type B breast density had a 1.39 times more risk of breast cancer, while type C patients had a 2.92 times more risk, and finally, type D patients had a 3.12 times more risk for breast cancer (p value= 0.010, 0.003, and 0.036 respectively).
Conclusion: Breast cancer density is significantly associated with breast cancer. Female patients with type D breast density had 3 times more risk of developing breast cancer and this risk decreases as the breast density decrease.