BREAST CANCER BASE

Normal male adolescent stage, there will be a one-time increase breast. The incidence is about 39%, as high as 50% to 70% of reports. There adolescent Gynecomastia over the age of 13 to 14 years. The majority of the boys on both sides of the degree of proliferation of breast asymmetry, the general side than the other side big. Both sides of the mammary hyperplasia can be inconsistent time, the number to one to two years, the overwhelming majority of the 20-year-old former hyperplasia of the breast naturally dissipated, only a few boys side, or bilateral breast permanent residue not completely dissipated the breast tissue. Adolescent mammary hyperplasia of the exact reasons not yet clear, might have the following two reasons : First, with mammary hyperplasia boys average higher plasma estradiol levels. The boys plasma testosterone levels before reaching the plasma estradiol concentration has reached adult levels, thus estrogen / androgen ratio increased. Two adolescent stage breast partial aromatase role in enhancing local estrogen formation of the increase, leading to adolescent male breast hyperplasia. This is a physiological Gynecomastia, and pathological Gynecomastia different