title: Thoracic paracoccidioidomycosis: radiographic and CT findings.
abstract: Paracoccidioidomycosis (PCM) is the most common systemic mycosis in Latin America. Although most cases occur in developing countries, recent immigration patterns and an increase in travel have led to a growing number of PCM cases in the United States and Europe. PCM is caused by the dimorphic fungus Paracoccidioides brasiliensis, and the chronic form may progress to severe pulmonary involvement. Several radiologic patterns have been described for pulmonary PCM, including linear and reticular opacities, variable-sized nodules, patchy ill-defined opacities, airspace consolidation, and cavitary lesions. Fibrosis and paracicatricial emphysema are common associated findings. Chest computed tomography (CT) is the method of choice for evaluating pulmonary PCM, with the most common CT findings being ground-glass attenuation, consolidation, small or large nodules, masses, cavitations, interlobular septal thickening, emphysema, and fibrotic lesions. PCM is also an important cause of the "reversed halo" sign at high-resolution CT and should be considered in the differential diagnosis. Awareness of the multiple radiologic manifestations of PCM as well as its epidemiologic and clinical characteristics may permit early diagnosis and initiation of specific treatment, thereby reducing associated morbidity and mortality.
authors.affiliation: Department of Radiology, Federal University of Rio de Janeiro, Rúa Thomaz Cameron 438, Valparaiso CEP 25685.120, Petrópolis, Rio de Janeiro, Brazil.
authors.forename: Miriam M
authors.initials: MM
authors.lastname: Barreto
authors.forename: Edson
authors.initials: E
authors.lastname: Marchiori
authors.forename: Viviane B
authors.initials: VB
authors.lastname: Amorim
authors.forename: Gláucia
authors.initials: G
authors.lastname: Zanetti
authors.forename: Tatiana C
authors.initials: TC
authors.lastname: Takayassu
authors.forename: Dante L
authors.initials: DL
authors.lastname: Escuissato
authors.forename: Arthur S
authors.initials: AS
authors.lastname: Souza
authors.forename: Rosana S
authors.initials: RS
authors.lastname: Rodrigues
mesh_terms: D006801:Humans; D008172:Lung Diseases, Fungal / Q000000981:diagnostic imaging*; D010229:Paracoccidioidomycosis / Q000000981:diagnostic imaging*; D013902:Radiography, Thoracic / Q000379:methods*; D014057:Tomography, X-Ray Computed / Q000379:methods*