Review Question - QID 215117

A 45-year-old woman presents to the primary care clinic with a lump on her neck. She first noticed a small lump on the side of her neck approximately 2 months ago. Since that time, the mass has increased in size. She denies palpitations, tremors, dysphagia, dysarthria, or vocal changes. Her past medical history is significant for type 1 diabetes. Her only medication is insulin. The patient’s temperature is 98.8°F (37.1°C), blood pressure is 124/72 mmHg, pulse is 74/min and regular, and respirations are 16/min. Palpation of her neck reveals a nodule to the left of midline and inferior to the thyroid cartilage that is 1.5 cm in diameter. An ultrasound identifies a solid, hypoechoic mass with microcalcifications. Her thyroid-stimulating hormone (TSH) level is 0.2 µU/mL. A subsequent radioiodine scan shows that there is reduced radioiodine uptake by the mass compared to the surrounding tissue. Which of the following is the most appropriate next step in management?