A woman at low risk and with no family history of breast cancer comes to the clinic and asks the nurse about when she should have her first mammogram.
According to the recommendations of the American Cancer Society, at what age should the woman have her first mammogram?

Choice A rationale
Breastfeeding every 2 hours is actually recommended for newborns and is not a contributing factor to mastitis.
Choice B rationale
Substituting breastfeeding sessions with formula feeding can contribute to mastitis. This is because the milk that is not removed from the breast can lead to engorgement and blocked ducts, which can result in infection.
Choice C rationale
Blisters and cracks on the nipples can allow bacteria to enter the breast tissue, leading to infection and mastitis.
Choice D rationale
Alternating breastfeeding positions can help ensure that the breasts are emptied completely during each feeding, which can help prevent mastitis.

Choice A rationale
Theca-lutein cysts are not commonly found in females of reproductive age. They are often associated with conditions that cause high levels of human chorionic gonadotropin, such as molar pregnancies.
Choice B rationale
Corpus luteum cysts can occur in women of reproductive age, but they do not typically regress with the menstrual cycle. Instead, they usually resolve after a few weeks if pregnancy does not occur.
Choice C rationale
Follicular cysts are commonly found in females of reproductive age and often regress with the menstrual cycle. They form when the follicle that normally releases an egg does not open to release the egg.

Choice D rationale
Polycystic ovarian syndrome is a condition characterized by multiple small cysts in the ovaries, but it does not typically cause cysts that regress with the menstrual cycle.