Review Question - QID 212316

A 47-year-old woman presents with abnormal vaginal bleeding. She reports that she has had heavy, irregular periods for the past 6 months. Her periods, which normally occur every 28 days, are sometimes now only 2-3 weeks apart, last 7-10 days, and she has spotting in between menses. Additionally, her breasts feel enlarged and tender. She denies abdominal pain, dysuria, dyspareunia, constipation, or abnormal vaginal discharge. The patient has a history of depression and hyperlipidemia. She takes fluoxetine and atorvastatin. She is a widow and has 2 healthy children. She works as an accountant. The patient says she drinks a half bottle of wine every night to help her calm down after work and to help her sleep. She denies tobacco or illicit drug use. She is not currently sexually active. Her temperature is 98.7°F (37°C), blood pressure is 118/81 mmHg, pulse is 88/min, respirations are 12/min, and oxygen saturation is 98% on room air. Physical examination reveals spider angiomata and mild ascites. The left ovary is palpable but non-tender. A thickened endometrial stripe and a left ovarian mass are noted on ultrasound. A mammogram, chest radiograph, and CT abdomen/pelvis are pending. Which of the following tumor markers is associated with the patient’s most likely diagnosis?