Semin Respir Crit Care Med 2007; 28(1): 102-120
DOI: 10.1055/s-2007-970336
Copyright © 2007 by Thieme Medical Publishers, Inc., 333 Seventh Avenue, New York, NY 10001, USA.

Imaging in Sarcoidosis

Hilario Nunes1 , Pierre-Yves Brillet2 , Dominique Valeyre1 , Michel W. Brauner2 , Athol U. Wells3
  • 1Services de Pneumologie, Hôpital Universitaire Avicenne, Bobigny, France
  • 2Radiologie, Hôpital Avicenne, Assistance Publique-Hôpitaux de Paris, Université Paris, Bobigny, France
  • 3Interstitial Lung Disease Unit, Royal Brompton Hospital, London, United Kingdom
Further Information

Publication History

Publication Date:
28 February 2007 (online)

ABSTRACT

Sarcoidosis is a multisystemic granulomatous disease of unknown etiology that may involve virtually any organ. Pulmonary involvement predominates, but sarcoidosis can involve multiple organs, with or without concomitant lung involvement. Aberrations on chest radiographs are present in more than 90% of patients with sarcoidosis. Bilateral hilar lymphadenopathy, with or without lung parenchymal infiltrates, is typical but a wide range of chest radiographic patterns may be observed. This article discusses the characteristic chest radiographic features of sarcoidosis and the prognostic value of the radiographic staging classification as espoused by Scadding more than 4 decades ago. Thin-section high-resolution computed tomographic (HRCT) scans more clearly elucidate the intrathoracic lesions observed in sarcoidosis and may discriminate active inflammation from end-stage fibrosis. Although HRCT is not necessary to manage all cases of sarcoidosis, HRCT may be invaluable in selected patients with stage II or III sarcoidosis to discriminate alveolitis (which may be amenable to therapy) from fibrosis. Additionally, radionuclide techniques may have a role in extrapulmonary sarcoidosis (particularly when central nervous system or cardiac involvement is suspected). We review the salient features and role of magnetic resonance imaging and diverse radionuclide techniques to diagnose or follow selected cases of extrapulmonary sarcoidosis.

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Hilario NunesM.D. 

Service de Pneumologie, Hôpital Universitaire Avicenne

125 rue de Stalingrad, 93009 Bobigny, France

Email: hilario.nunes@avc.aphp.fr

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