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Hantavirus pulmonary syndrome: high-resolution CT findings in one patient

Departments of Diagnostic Radiology, ¹University of Paraná and ²University of Rio de Janeiro, Brazil

Correspondence: Emerson L Gasparetto, Av. Silva Jardim 296, Ap. 502, 80230-000 Curitiba, PR, Brazil. E-mail: egasparetto{at}gmail.com

Physical examination demonstrated petechiae, leg oedema and mild dyspnoea. Chest radiograph showed minimal bilateral hazy increased opacification, mainly on the right side, and small bilateral pleural effusions. High-resolution CT demonstrated extensive bilateral ground-glass opacities most severe in the middle and lower lung zones. Also noted were a few slightly thickened interlobular septa, a few poorly defined small nodules, bronchial wall thickening and small bilateral pleural effusions. Blood tests revealed high leukocyte and low platelet counts. Renal function was normal. Serological test (ELISA) for hantavirus using SNV (Sin Nombre virus) antigen was positive. The patient received supportive treatment, gradually improved, and was discharged 10 days after hospital admission. His symptoms completely resolved and follow-up radiographs returned to normal.