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Related Experiment Videos

Imaging in sarcoidosis.

Hilario Nunes1, Pierre-Yves Brillet, Dominique Valeyre

  • 1Services de Pneumologie, Hôpital Universitaire Avicenne, Bobigny, France. hilario.nunes@avc.aphp.fr

Seminars in Respiratory and Critical Care Medicine
|March 3, 2007
PubMed
Summary

Sarcoidosis is a multisystemic granulomatous disease. Chest radiography is key for diagnosis, with high-resolution computed tomography (HRCT) and radionuclide imaging aiding in specific cases.

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Area of Science:

  • Pulmonology
  • Radiology
  • Immunology

Background:

  • Sarcoidosis is a multisystemic granulomatous disease of unknown cause.
  • Pulmonary involvement is common, but it can affect multiple organs.
  • Over 90% of patients show chest radiograph abnormalities.

Purpose of the Study:

  • To discuss characteristic chest radiographic features of sarcoidosis.
  • To evaluate the prognostic value of radiographic staging.
  • To review advanced imaging techniques for sarcoidosis diagnosis and management.

Main Methods:

  • Review of characteristic chest radiographic patterns in sarcoidosis.
  • Evaluation of Scadding's radiographic staging classification.
  • Analysis of thin-section high-resolution computed tomography (HRCT) for intrathoracic lesions.

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  • Review of radionuclide and magnetic resonance imaging for extrapulmonary sarcoidosis.

    • Main Results:

    • Bilateral hilar lymphadenopathy is typical, but varied patterns exist.
    • HRCT can differentiate active inflammation from fibrosis in selected cases.
    • Radionuclide and MRI techniques are valuable for extrapulmonary sarcoidosis, especially CNS or cardiac involvement.

    Conclusions:

    • Chest radiography is crucial for sarcoidosis diagnosis and staging.
    • HRCT aids in managing specific cases by distinguishing treatable alveolitis from fibrosis.
    • Advanced imaging modalities are essential for diagnosing and monitoring extrapulmonary sarcoidosis.