Pre-clinical Cushing's syndrome with body weight loss and normal circadian rhythm of blood pressure.
A 68-year-old woman was referred for evaluation of an incidentally discovered left adrenal mass. Her chief complaint was body weight loss. She showed no symptoms or signs suggestive of Cushing's syndrome. The circadian rhythm of blood pressure was also normal. Hormonal assessment revealed an abnormal diurnal variation in serum cortisol levels, suppressed baseline plasma adrenocorticotrophic hormone, and nonsuppression of serum and urinary cortisol with the dexamethasone suppression test. Adrenal scintigraphy with (131)I-6-beta-iodomethyl-norcholesterol showed uptake on the left adrenal and inhibition of the contralateral adrenal gland. She was diagnosed as pre-clinical Cushing's syndrome. Due to the lack of clinical symptoms and the risks of surgery, we emphasize the importance of careful assessment of the cortisol metabolism and scintigraphic scanning under dexamethasone suppression to avoid post-surgical Addisonian crisis.
Second Department of Internal Medicine, Gunma University School of Medicine, Maebashi.
T
T
Iwami
T
T
Nakamura
N
N
Niwamae
T
T
Yamagishi
T
T
Utsugi
R
R
Nagai
D000310:Adrenal Gland Neoplasms / Q000175:diagnosis / Q000503:physiopathology / Q000601:surgery; D000315:Adrenalectomy; D000324:Adrenocorticotropic Hormone / Q000097:blood; D000368:Aged; D001794:Blood Pressure / Q000502:physiology*; D002940:Circadian Rhythm / Q000502:physiology*; D003480:Cushing Syndrome / Q000175:diagnosis / Q000473:pathology* / Q000503:physiopathology*; D003907:Dexamethasone; D005260:Female; D006801:Humans; D006854:Hydrocortisone / Q000097:blood / Q000652:urine; D008279:Magnetic Resonance Imaging; D014057:Tomography, X-Ray Computed; D015431:Weight Loss
D003907:Dexamethasone; D000324:Adrenocorticotropic Hormone; D006854:Hydrocortisone