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Related Experiment Videos

Macronodular adrenal hyperplasia in Cushing disease.

J L Doppman1, D L Miller, A J Dwyer

  • 1Diagnostic Radiology Department, National Institutes of Health, Bethesda, MD 20892.

Radiology
|February 1, 1988
PubMed
Summary

Computed tomographic (CT) scans reveal distinct adrenal gland characteristics in Cushing syndrome subtypes. Macronodular hyperplasia shows nodules alongside hyperplasia, unlike autonomous adenomas or ectopic ACTH production.

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Area of Science:

  • Endocrinology
  • Radiology
  • Oncology

Background:

  • Cushing syndrome results from prolonged cortisol exposure.
  • Differentiating causes like pituitary adenoma, adrenal adenoma, and ectopic ACTH production is crucial for treatment.
  • Computed tomographic (CT) imaging is a key diagnostic tool.

Observation:

  • CT scans of adrenal glands were analyzed in patients with Cushing disease due to ACTH-secreting pituitary adenoma and adrenal hyperplasia.
  • Findings were compared with patients having adrenal adenoma or ectopic ACTH production.
  • Adrenal gland morphology varied significantly across the different etiologies.

Findings:

  • Patients with Cushing disease and macronodular adrenal hyperplasia (n=9) typically presented with hyperplastic glands and focal nodules.

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  • In contrast, patients with autonomous adrenal adenoma (n=6) showed atrophic or normal adrenal glands.
  • The majority of patients with ectopic ACTH syndrome (n=16) exhibited adrenal hyperplasia without nodules, with only two showing focal nodules.

    • Implications:

    • CT imaging findings can help differentiate the causes of Cushing syndrome.
    • Distinct adrenal gland appearances on CT may guide further diagnostic workup and treatment strategies.
    • Understanding these imaging patterns is vital for accurate diagnosis and patient management.