At an annual physical, a woman’s doctor feels a mass in the woman’s abdominal area. He orders an ultrasound and a CA 125. The woman’s CA 125 is elevated.
What should the doctor see on the woman’s ultrasound?
a. An ovarian mass
b. Uterine cancer
c. A fetus in her uterus
d. A bad infection
2. Can serum levels of this marker be used for screening?