Endocrinology Question 17 Instructor

Mr. MacDonald is a 73 year-old man who reports a 20-pound weight loss and hyperpigmentation, and you find him to have new-onset hypertension and hypokalemia.

What is the likeliest endocrine diagnosis?

Ectopic ACTH production, causing Cushing’s syndrome.

What is the likeliest underlying etiology?

Small cell lung cancer.

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