Ectopic Cushing and other paraneoplastic syndromes in thoracic neuroendocrine tumors

Thorac Surg Clin. 2014 Aug;24(3):277-83. doi: 10.1016/j.thorsurg.2014.05.002.

Abstract

Overproduction of corticotropin by the pituitary gland or extrapituitary tumors leads to hypercortisolism or Cushing syndrome. Diagnosis of suspected Cushing syndrome involves 3 major steps: confirmation of hypercortisolism, differentiation between corticotropin-independent and corticotropin-dependent causes of Cushing syndrome, and distinction between pituitary and ectopic corticotropin production. A definitive diagnosis of ectopic corticotropin secretion requires stringent criteria, including reversal of the clinical picture after resection of the tumor and/or demonstration of corticotropin immunohistochemical staining within the tumor tissue.

Keywords: Corticotropin; Cortisol; Cushing; Neuroendocrine tumors; Paraneoplastic syndrome.

Publication types

  • Review

MeSH terms

  • ACTH Syndrome, Ectopic / etiology*
  • Adrenocorticotropic Hormone / metabolism
  • Cushing Syndrome / etiology*
  • Humans
  • Neuroendocrine Tumors / complications*
  • Neuroendocrine Tumors / surgery
  • Paraneoplastic Syndromes
  • Thoracic Neoplasms / complications*
  • Thoracic Neoplasms / surgery

Substances

  • Adrenocorticotropic Hormone