Chapter

Cushing’s syndrome

John Newell-Price

in Oxford Textbook of Endocrinology and Diabetes

Second edition

Published on behalf of Oxford University Press

ISBN: 9780199235292
Published online July 2011 | e-ISBN: 9780199608232 | DOI: http://dx.doi.org/10.1093/med/9780199235292.003.0583

Series: Oxford Textbooks

Cushing’s syndrome

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Harvey Cushing described the first case of Cushing’s syndrome with a severe phenotype in 1912. Since that time, investigation and management of Cushing’s syndrome has remained a significant clinical challenge (1, 2) and patients suspected of this diagnosis warrant referral to major centres.

Endogenous Cushing’s syndrome is due the chronic, excessive, and inappropriate secretion of cortisol. When presentation is florid diagnosis is usually straightforward, but in modern practice Cushing’s syndrome is frequently and increasingly considered in mild cases in the absence of the classical signs in the context of osteoporosis, diabetes, hypertension, gynaecology, and psychiatric clinics, and achieving a diagnosis can be difficult. Appropriate management of Cushing’s syndrome is dependent on correctly identifying the cause of excess cortisol. Separating non-ACTH-dependent causes (adrenal tumours) from ACTH-dependent causes (pituitary or ectopic secretion of ACTH) is usually simple. However, many ectopic sources are occult and the differentiation of the source of ACTH secretion may require meticulous and repeated investigation to enable the appropriate surgery to be undertaken.

In most circumstances the mainstay of therapy remains surgery to either an ACTH-secreting tumour or directly to the adrenal glands, but additional treatment with cortisol-lowering drugs and tumour-directed radiotherapy is often needed.

Chapter.  9608 words.  Illustrated.

Subjects: Endocrinology and Diabetes

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