Nonsuppressible Oral Dexamethasone Suppression Tests but Not Cushing Syndrome

Table 1

Investigation summary prior to the first surgery.

Date	20 and 21/6/2006	11/8/2006	17/1/2007	16/7/2007	28/11/2007
S. cortisol, 8 am (mcg/dL)	18.12	15.76	Patient underwent; TSS and removal of suspected pituitary adenoma
S. cortisol, 4 pm (mcg/dL)	20.29
Overnight DST (1 mg) (mcg/dL)	12.68			0.54	1.81
Low dose 48 hr DST (2 mg/day) (mcg/dL)		4.67
High dose 48 hr DST (8 mg/day) (mcg/dL)		1.19