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Reversed Halo Sign in Pulmonary Paracoccidioidomycosis

Emerson L. Gasparetto1, Dante L. Escuissato1, Taísa Davaus1, Elza Maria F. P. de Cerqueira2, Arthur Soares Souza, Jr.3, Edson Marchiori4 and Nestor L. Müller5

1 Department of Diagnostic Radiology, University of Paraná, Curitiba, Brazil.
2 University of Campinas, Campinas, Brazil.
3 Faculdade de Medicina de São José do Rio Preto, São José Rio Preto, Brazil.
4 University of Rio de Janeiro, Rio de Janeiro, Brazil.
5 Department of Radiology, Vancouver General Hospital, 899 W 12th Ave., Vancouver, BC V5Z 1M9, Canada.



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  		Fig. 1. —45-year-old man with pulmonary paracoccidioidomycosis. High-resolution CT scan shows bilateral focal ground-glass opacities surrounded by crescent or ring of consolidation (reversed halo sign) (curved arrows). Also noted are patchy ground-glass opacities without surrounding consolidation and right lower lobe nodule (straight arrow).

 


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  		Fig. 2. —48-year-old man with pulmonary paracoccidioidomycosis. High-resolution CT scan shows extensive bilateral ground-glass opacities and small areas of consolidation. Areas of consolidation are located predominately adjacent to ground-glass opacities. Reversed halo sign is best seen in left lower lobe (arrows).

 


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  		Fig. 3. —37-year-old man with pulmonary paracoccidioidomycosis. High-resolution CT scan shows bilateral localized round and oval areas containing central ground-glass opacities and ring of consolidation (reversed halo sign) (arrows). Also noted are small focal areas of consolidation and ground-glass attenuation.

 

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