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[Pituitary function in hemochromatosis]

U Pedersen-Bjergaard1, B Thorsteinsson, B C Kirkegaard

  • 1Medicinsk afdeling F. Hillerød Sygehus.

Ugeskrift for Laeger
|March 25, 1996
PubMed
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Hereditary hemochromatosis frequently causes pituitary iron deposition, leading to gonadotropin deficiency and hypogonadism in 46% of patients. Subclinical deficiencies in other pituitary axes are also noted, necessitating pituitary function screening.

Area of Science:

  • Endocrinology
  • Hematology
  • Reproductive Medicine

Background:

  • Hereditary hemochromatosis is characterized by iron overload.
  • Pituitary gland involvement in hemochromatosis is recognized.
  • Iron deposition in the pituitary can impair endocrine function.

Purpose of the Study:

  • To review literature on pituitary function in patients with hemochromatosis.
  • To assess the prevalence and types of pituitary hormone deficiencies.
  • To provide recommendations for screening and management.

Main Methods:

  • Literature review of morphological and clinical studies.
  • Analysis of case series reporting pituitary function in hemochromatosis patients.
  • Evaluation of hormonal axes including gonadotropic, somatotropic, lactotropic, thyroid, and adrenocortical functions.

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Main Results:

  • Morphological studies confirm pituitary iron deposition, particularly in gonadotropic cells.
  • Clinical hypogonadism due to gonadotropin deficiency affects 46% of patients.
  • Subclinical deficiencies observed: growth hormone (15%), lactotropic (8%), thyroid (4%), and adrenocortical (1.5%).

Conclusions:

  • Pituitary dysfunction, especially hypogonadism, is common in hemochromatosis.
  • Screening of pituitary function, particularly gonadotropic and somatotropic axes, is recommended.
  • Early detection and substitution therapy can manage pituitary deficiencies.