Objetive: this study intends to verify the correlation of mammographic breast density and expression level of enzymes aromatase and 17Î’HSD1 in infiltrating ductal carcinoma. Methods: Forty-eight cases were evaluated by mammographic image grading density by ACR BI-RADS® and by tissue micro array (TMA) to expression immunohistochemically screened with anti-aromatase polyclonal antibodies and anti-17βhsd1 monocl...