A 36-year-old female presents to her primary care physician…
A 36-year-old female presents to her primary care physician for evaluation of bilateral nipple discharge. She has observed a milky discharge coming from her nipples for the past month. She has felt fatigued lately and has experienced decreased libido. She also reports headaches that typically resolve by the middle of the day and a 5-pound weight gain this past month. Vital signs include: T: 99.5°F (37.5°C), BP 132/76 mmHg, pulse is 60/min, respirations are 15/min, and oxygen saturation is 98% on room air. On physical exam, auscultation of the heart and lungs is within normal limits. A neurological exam reveals cranial nerves II-XII as grossly intact. Which of the following conditions is the most likely diagnosis?