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Adrenal incidentalomas.

Jérôme Bertherat1, Helen Mosnier-Pudar, Xavier Bertagna

  • 1Endocrinology Department, Cochin Hospital and Groupe d'Etudes en Physiopathologie Endocrinienne, Institut Cochin de Génétique Moléculaire, Université Paris V - René Descartes, Faculté Cochin, Paris, France. jerome.bertherat@cch.ap-hop-paris.fr

Current Opinion in Oncology
|January 16, 2002
PubMed
Summary
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Adrenal incidentalomas are unexpected adrenal masses found during imaging. Differentiating benign from malignant tumors is key, with size and imaging characteristics aiding diagnosis.

Area of Science:

  • Endocrinology
  • Radiology
  • Oncology

Background:

  • Adrenal incidentalomas are adrenal masses discovered incidentally during imaging for unrelated reasons.
  • Prevalence ranges from 1-4%, with most being benign adrenocortical adenomas.
  • Distinguishing benign from malignant adrenal tumors presents a diagnostic challenge.

Purpose of the Study:

  • To review the diagnostic approaches for adrenal incidentalomas.
  • To highlight imaging and scintigraphic features differentiating benign from malignant lesions.
  • To discuss current understanding of adrenal tumor pathogenesis.

Main Methods:

  • Review of computed tomographic (CT) scan findings, including size and Hounsfield Units (HU).
  • Discussion of NP-59 scintigraphy as a diagnostic tool.

Related Experiment Videos

  • Exploration of molecular alterations in adrenal tumor pathogenesis.

    • Main Results:

    • Lesion size < 4 cm and unenhanced CT attenuation < 10 HU suggest benign adrenocortical adenoma.
    • Positive NP-59 scintigraphy supports a benign diagnosis.
    • Molecular defects like IGF-II overexpression are linked to malignant tumors.

    Conclusions:

    • Imaging characteristics and scintigraphy are crucial for diagnosing adrenal incidentalomas.
    • Understanding molecular pathways may offer future diagnostic and therapeutic insights.
    • Further research into adrenal tumor pathogenesis is warranted.