POMC and neoplasm: On the other hand, group nonS was found to have statistically significant correlations between baseline ACTH and morning plasma (baseline) cortisol (r = 0.315, p = 0.028), between ACTH and the largest tumour diameter (r = −0.395, p = 0.005), and between baseline cortisol and total hip BMD (r = −0.391, p = 0.033) (Table 12).