In a patient with untreated Cushing disease or syndrome, you would expect to find:
b. Increased production of cortisol
Cushing's disease or syndrome is characterized by an excess production of cortisol, a steroid hormone. This can lead to a range of symptoms and complications, including weight gain, high blood sugar levels, high blood pressure, and muscle weakness, among others. So, the answer is not "low blood sugar levels" or "weight loss and muscle atrophy," as these are typically not associated with untreated Cushing's disease or syndrome.