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 33-year-old man comes to the emergency department because of a pounding headache for the past 3 hours. The pain is 8 out of 10 in intensity, does not radiate, and is not relieved by ibuprofen. He also has associated dizziness, blurring of vision, and palpitations. He has had similar episodes over the last 6 months but none this severe. He has not had fever, weight change, or loss of appetite. He underwent an appendectomy at the age of 18. His father died of renal cancer. He is diaphoretic. His temperature is 36.8°C (98.4°F), pulse is 112/min, and blood pressure is 220/130 mm Hg. Physical examination shows no abnormalities. Laboratory studies show:
Hemoglobin 14.8 g/dL
Leukocyte count 9600/mm3
Platelet count 345,000/mm3
Serum
Glucose 112 mg/dL
Na+ 137 mEq/L
K+ 4.2 mEq/L
Cl- 105 mEq/L
Creatinine 1.0 mg/dL
Urine dipstick shows no abnormalities. Which of the following findings on imaging is the most likely explanation for this patient's symptoms?"
assistant
Adrenal medullary mass