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 Cushing’s Disease and Idiopathic Intracranial Hypertension: Case Report and Review of Underlying Pathophysiological Mechanisms

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PostSubject: Cushing’s Disease and Idiopathic Intracranial Hypertension: Case Report and Review of Underlying Pathophysiological Mechanisms   Cushing’s Disease and Idiopathic Intracranial Hypertension: Case Report and Review of Underlying Pathophysiological Mechanisms I_icon_minitimeThu Aug 02, 2012 9:08 pm

Cushing’s Disease and Idiopathic Intracranial Hypertension: Case Report and Review of Underlying Pathophysiological Mechanisms

Authors Gabriel Zada, Amir Tirosh, Ursula B. Kaiser,Whitney W. Woodmansee

Author Affiliations

Department of Neurosurgery (G.Z., E.R.L.) and Division of Endocrinology, Diabetes, and Hypertension (A.T., U.B.K., W.W.W.), Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts 02115

Address all correspondence and requests for reprints to: Gabriel Zada, M.D., 15 Francis Street, PBB3, Boston, Massachusetts 02115. E-mail: gzada@usc.edu.

Context: Several studies have reported an association between idiopathic intracranial hypertension (IIH) and deficits of the hypothalamic-pituitary-adrenal (HPA) axis.

Case Illustration: A 33-yr-old woman with Cushing’s disease underwent successful surgical resection of a pituitary adenoma and developed IIH 11 months later after inadvertent withdrawal of oral glucocorticoids.

Methods: A review of the literature was conducted to identify previous studies pertaining to IIH in association with neuroendocrine disease, focusing on reports related to HPA axis dysfunction.

Results: A number of patients developing IIH due to a relative deficiency in glucocorticoids, after surgical or medical management for Cushing’s disease, withdrawal from glucocorticoid replacement, or as an initial presentation of Addison’s disease, have been reported. Hypotheses regarding the underlying pathophysiology of IIH in this context and, in particular, the role of cortisol and its relationship to other neuroendocrine and inflammatory mediators that may regulate the homeostasis of cerebrospinal fluid production and absorption are reviewed.

Conclusion: In a subset of patients, dysfunction of the HPA axis appears to play a role in the development of IIH. Hormonal control of cerebrospinal fluid production and absorption may be regulated by inflammatory mediators and the enzyme 11ß-hydroxysteroid dehydrogenase type 1. Further study of neuroendocrine markers in the serum and cerebrospinal fluid may be an avenue for further research in IIH.

Read more at http://jcem.endojournals.org/content/95/11/4850.full
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