5th April 2024

A 46-year-old man attends a BP check-up with his GP. He is currently taking ramipril

A 46-year-old man attends a BP check-up with his GP. He is currently taking ramipril, amlodipine and indapamide, all at full dose. His BP in the clinic today is 162/91 mmHg. Due to his resistant hypertension, his GP referred him for further testing.

Blood tests

Na+ 144 mmols/L (135-145)

K+ 2.8 mmols/L (3.5-5.3)

Urea 4.5 mmols/L (2.5-7.0)

Creatinine 100 umols/L (59-104)

A CT of his abdomen and pelvis reveals a solitary mass measuring 2cm in diameter in his left adrenal gland. All other findings are unremarkable. What is the most likely diagnosis?

Select the SINGLE most appropriate option from the list below. Select ONE option only.