POMC and neoplasm: A statistically significant positive correlation was observed between the size of the tumor and morning cortisol level following 1 mg dexamethasone test (r = 0.2628, Figure 3) as well as the 24 h cortisol excretion and size (r = 0.1542, Figure 4), while there was a negative correlation between ACTH level and size (r = −0.0411).