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Revista argentina de radiología

versión On-line ISSN 1852-9992


MARTINEZ MARTINEZ, Javier Mauricio et al. Sarcoidosis Uncovered: What we should Report in Thoracic Image. Rev. argent. radiol. [online]. 2019, vol.83, n.2, pp.77-86. ISSN 1852-9992.

Sarcoidosis is a non-caseating granulomatous, multisystemic disease of unknown cause that involves the lung and mediastinal lymph nodes in 90-95% of cases. It can also affect other organs such as the salivary glands, skin, eyes, liver, spleen, heart, bones and the central nervous system. Sarcoidosis has a low prevalence in Latin America and it is underdiagnosed due to the high frequency of other similar disorders such as tuberculosis, leprosy and deep mycosis. The presumptive diagnosis is established based on characteristic imaging findings within an appropriate clinical setting and is confirmed by histological evidence of non-caseating epithelioid cell granulomas, in the absence of other etiologies. Thoracic imaging findings include pulmonary, nodal and bronchial involvement, which are detected on chest radiography (CXR) and computed tomography (CT), this last one having a higher sensitivity and specificity. In this article, we highlight the importance of recognizing the typical and atypical presentation patterns of sarcoidosis on CXR and CT, as well as the relevance of thoracic images as key elements in the diagnostic algorithm of this pathology. We also describe the usefulness of magnetic resonance (MR) imaging as an additional method for diagnosis in cases of cardiac involvement and the role of positron emission tomography (PET-CT) in therapeutic follow-up.

Palabras clave : sarcoidosis; radiography; computed tomography; positron emission tomography; magnetic resonance.

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