system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
A 25-year-old man presents to his physician for new-onset palpitations and tremors in his right hand. He also feels more active than usual, but with that, he is increasingly feeling fatigued. He lost about 3 kg (6.6 lb) in the last 2 months and feels very anxious about his symptoms. He survived neuroblastoma 15 years ago and is aware of the potential complications. On examination, a nodule around the size of 2 cm is palpated in the right thyroid lobule; the gland is firm and nontender. There is no lymphadenopathy. His blood pressure is 118/75 mm Hg, respirations are 17/min, pulse is 87/min, and temperature is 37.5°C (99.5°F). Which of the following is the best next step in the management of this patient?
assistant
Fine needle aspiration with cytology