A 38-year-old man from Delhi presents with recurrent kidney stones and hypertension. Serum calcium is 11.2 mg/dL (normal 8.5–10.5), PTH is elevated at 95 pg/mL (normal 15–65). On further workup, he is found to have a prolactin-secreting pituitary adenoma. Genetic testing reveals a RET proto-oncogene mutation. What is the next step in management?