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J Clin Endocrinol Metab. 2009 Sep;94(9):3322-8. doi: 10.1210/jc.2009-0844. Epub 2009 Jul 7.

Persistent adrenocorticotropin response to desmopressin in the early postoperative period predicts recurrence of Cushing's disease.

Author information

1
Pituitary Unit, Department of Neurosurgery, Istituto Scientifico San Raffaele, Università Vita-Salute, 20132 Milano, Italy. losa.marco@hsr.it

Abstract

CONTEXT:

Patients with Cushing's disease (CD) often show an ACTH and cortisol response to desmopressin (DDAVP).

OBJECTIVE:

We tested whether persistence of a positive response to DDAVP after successful surgery identifies patients at risk of CD recurrence.

DESIGN:

We prospectively included all CD patients who had a positive response to DDAVP before successful surgery from 1995 through 2007.

SETTING:

The study was performed at a university hospital.

PATIENTS:

One hundred seventy-four patients with CD, 148 women and 26 men, mean age 36.1 +/- 0.8 yr, were studied. The median follow-up after surgery was 58 months (interquartile range 22-93 months).

INTERVENTION:

DDAVP test was performed immediately before and after surgery.

MAIN OUTCOME MEASURE:

An ACTH and cortisol increment of at least 30 and 20% above baseline, respectively, were considered as a positive response to DDAVP. The risk of CD recurrence was analyzed according to the postoperative hormonal response to DDAVP.

RESULTS:

Recurrence of CD occurred in 19 patients (10.9%). The recurrence-free survival at 5 yr was 89.8% [95% confidence interval (CI) 84.2-95.4]. Patients with a positive ACTH response had a 5-yr recurrence-free survival of 82.6% (95% CI 70.6-94.6%) as compared with 94.0% (95% CI 88.2-99.8%; P < 0.01) in patients without it. Multivariate analysis showed that persistence of a positive ACTH response to DDAVP was significantly associated with CD recurrence.

CONCLUSION:

Positive ACTH response to DDAVP after surgery is associated with an increased risk of CD recurrence. However, the specificity and predictive value of this finding are low.

PMID:
19584185
DOI:
10.1210/jc.2009-0844
[Indexed for MEDLINE]

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