A 35-year-old woman comes to her primary care physician because of headaches. She says that her peripheral vision seems to be reduced lately. An MRI is obtained and shown below. A biopsy shows a benign, hormone-secreting tumor. Which of the following findings is most likely?
- Increased libido
- Elevated follicle-stimulating hormone concentration
- Elevated gonadotropin-releasing hormone concentration
- Menometrorrhagia
- Galactorrhea