The Reversed Halo Sign on High-Resolution CT in Infectious and Noninfectious Pulmonary Diseases

The Reversed Halo Sign on High-Resolution CT in Infectious and Noninfectious Pulmonary Diseases

Author Marchiori, Edson Google Scholar
Zanetti, Glaucia Google Scholar
Meirelles, Gustavo Souza Portes Autor UNIFESP Google Scholar
Escuissato, Dante Luiz Google Scholar
Souza, Arthur Soares Google Scholar
Hochhegger, Bruno Google Scholar
Institution Universidade Federal Fluminense (UFF)
Universidade Federal do Rio de Janeiro (UFRJ)
Universidade Federal de São Paulo (UNIFESP)
Univ Fed Parana
Universidade de São Paulo (USP)
Abstract OBJECTIVE. the purpose of this article is to describe diseases that may present with the reversed halo sign on high-resolution CT. We emphasize the tomographic features most frequently associated with this sign and correlate them with histologic findings.CONCLUSION. A wide spectrum of infectious and noninfectious diseases may present with the reversed halo sign on chest CT. the nonspecific nature of this sign should not cloud an otherwise fairly straightforward diagnosis, especially when associated background findings are typical. Although a rigorous analysis of associated CT findings may help with the differential diagnosis, histologic assessment is often needed for a definitive determination of the cause.
Keywords high-resolution CT
infectious pulmonary diseases
noninfectious pulmonary diseases
reversed halo sign
Language English
Date 2011-07-01
Published in American Journal of Roentgenology. Reston: Amer Roentgen Ray Soc, v. 197, n. 1, p. W69-W75, 2011.
ISSN 0361-803X (Sherpa/Romeo, impact factor)
Publisher Amer Roentgen Ray Soc
Extent W69-W75
Origin http://dx.doi.org/10.2214/AJR.10.5762
Access rights Open access Open Access
Type Article
Web of Science ID WOS:000291991200030
URI http://repositorio.unifesp.br/handle/11600/33832

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