Biochemical testing to differentiate Cushing's disease from ectopic ACTH syndrome

Pituitary. 2022 Oct;25(5):705-708. doi: 10.1007/s11102-022-01241-z. Epub 2022 Jun 27.

Abstract

The differential diagnosis of ACTH-dependent Cushing's syndrome is often a diagnostic challenge that has been debated in numerous studies. In this short article, we will discuss the performance and main drawbacks of the biochemical tests used for this diagnosis.

Keywords: CRH test; Cushing’s disease; Desmopressin test; Dexamethasone suppression test; Ectopic ACTH syndrome; Inferior petrosal sinus sampling.

Publication types

  • Review

MeSH terms

  • ACTH Syndrome, Ectopic* / diagnosis
  • Adrenocorticotropic Hormone
  • Corticotropin-Releasing Hormone
  • Cushing Syndrome* / diagnosis
  • Diagnosis, Differential
  • Humans
  • Petrosal Sinus Sampling
  • Pituitary ACTH Hypersecretion* / diagnosis

Substances

  • Adrenocorticotropic Hormone
  • Corticotropin-Releasing Hormone