15. A 47 year old female presents to her primary care provider due to new onset irregular menstruation, weight gain, galactorrhea and low libido. Past medical history is significant for diabetes mellitus type II, HTN, morbid obesity and Tobacco use disorder. Laboratory studies are shown below. A brain MRI shows a sellar mass.
- TSH: 4.3
- Cr: 0.98
- WBC: 8.3
- Prolactin: 97 ng/mL
Which visual abnormality is this patient most likely to have?