Shi Chen 1 , Kang Chen 2 , Shirui Wang 2 , Huijuan Zhu 1 , Lin Lu 1 , Xiaobo Zhang 3 , Anli Tong 1 , Hui Pan 1 , Renzhi Wang 4 , Zhaolin Lu 1 Show Affiliations »
Abstract
CONTEXTS: Bilateral inferior petrosal sinus sampling (BIPSS) can differentiate Cushing's disease (CD) and ectopic adrenocorticotropin (ACTH) syndrome (EAS). The traditional cutoff of inferior petrosal sinus to peripheral (IPS:P) ACTH gradient was 2 before stimulation and 3 after stimulation, which yielded unsatisfactory sensitivity in some studies. OBJECTIVES: To determine the optimal cutoff in BIPSS before or after desmopressin stimulation and to evaluate the necessity of stimulation. DESIGN AND SETTING: Single-center retrospective study (2011-2018) along with meta-analysis. PATIENTS: 226 CD and 24 EAS patients with confirmed diagnosis who underwent BIPSS with desmopressin stimulation. RESULTS: In the meta-analysis of 25 studies with 1249 CD and 152 EAS patients, the traditional cutoff yielded sensitivity of 86% and 97% and specificity of 98% and 100% before and after stimulation, respectively. We then analyzed the data from our center. With the traditional cutoff, the sensitivity was 87.2% (197/226) and 96.5% (218/226) before and after stimulation, and specificity was both 100% (25/25), which were close to the results of meta-analysis. Receiver operating characteristic analysis revealed that the optimal cutoff was 1.4 before stimulation and 2.8 after stimulation. With the new cutoff, the sensitivity was 94.7% (214/226) and 97.8% (221/226) while the specificity remained 100% (25/25) before and after stimulation. Among the 7 CD patients (7/226; 3.1%) for whom stimulation was necessary to get correct diagnosis, none has a pituitary lesion >6 mm by magnetic resonance imaging, and their sampling lateralization rate (P = .007) and peak ACTH level at dominant inferior petrosal sinus (P = .011) were lower than those among CD patients with IPS:P >1.4 before stimulation. CONCLUSIONS: The optimal cutoff for IPS:P in BIPSS is different from the commonly-used one. The optimal cutoff value can yield satisfactory accuracy even without stimulation, and stimulation may be unnecessary for those with pituitary adenoma >6 mm. © Endocrine Society 2019. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.
CONTEXTS: Bilateral inferior petrosal sinus sampling (BIPSS) can differentiate Cushing's disease (CD ) and ectopic adrenocorticotropin (ACTH ) syndrome (EAS). The traditional cutoff of inferior petrosal sinus to peripheral (IPS:P) ACTH gradient was 2 before stimulation and 3 after stimulation, which yielded unsatisfactory sensitivity in some studies. OBJECTIVES: To determine the optimal cutoff in BIPSS before or after desmopressin stimulation and to evaluate the necessity of stimulation. DESIGN AND SETTING: Single-center retrospective study (2011-2018) along with meta-analysis. PATIENTS : 226 CD and 24 EAS patients with confirmed diagnosis who underwent BIPSS with desmopressin stimulation. RESULTS: In the meta-analysis of 25 studies with 1249 CD and 152 EAS patients , the traditional cutoff yielded sensitivity of 86% and 97% and specificity of 98% and 100% before and after stimulation, respectively. We then analyzed the data from our center. With the traditional cutoff, the sensitivity was 87.2% (197/226) and 96.5% (218/226) before and after stimulation, and specificity was both 100% (25/25), which were close to the results of meta-analysis. Receiver operating characteristic analysis revealed that the optimal cutoff was 1.4 before stimulation and 2.8 after stimulation. With the new cutoff, the sensitivity was 94.7% (214/226) and 97.8% (221/226) while the specificity remained 100% (25/25) before and after stimulation. Among the 7 CD patients (7/226; 3.1%) for whom stimulation was necessary to get correct diagnosis, none has a pituitary lesion >6 mm by magnetic resonance imaging, and their sampling lateralization rate (P = .007) and peak ACTH level at dominant inferior petrosal sinus (P = .011) were lower than those among CD patients with IPS:P >1.4 before stimulation. CONCLUSIONS: The optimal cutoff for IPS:P in BIPSS is different from the commonly-used one. The optimal cutoff value can yield satisfactory accuracy even without stimulation, and stimulation may be unnecessary for those with pituitary adenoma >6 mm. © Endocrine Society 2019. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.
Entities: Disease
Gene
Species
Keywords:
Cushing’s disease; ROC curve; desmopressin; ectopic ACTH syndrome; petrosal sinus sampling
Year: 2020
PMID： 31758170 DOI： 10.1210/clinem/dgz194
Source DB: PubMed Journal: J Clin Endocrinol Metab ISSN： 0021-972X Impact factor: 5.958