Patrón de alteraciones en la radiografía de tórax de ni？os hospitalizados por infección causada por virus influenza A (H1N1)

the first cases of h1n1- type influenza virus infection in humans were reported in 2009, and since then, it rapidly expanded and became pandemic. at that time, an 88.5% increase in emergency consultations was observed in our institution, including adults and children and h1n1- type influenza virus infection was clinically diagnosed in 10,048patients, 45.6% of them with laboratory confirmation. a total of 59 child, 33 girls and 26 boys, aged between 1 month and 15.5 years old, needed hospitalization. the average of hospitalization time was 3.9 days, 9 patients required intensive unit care and 4 of them mechanical ventilation. no fatal cases were registered in this series. associated infection was confirmed in 15 patients: vrs (5), bacterial (9) and mycoplasma (1). the most frequent radiological pattern was bilateral interstitial lung involvement (72%). a mixed interstitial/alveolar pattern was observed in 78% of patients with proven bacterial super infection. the purpose of this review is to describe the radiological pattern observed in children who needed hospitalization due to of h1nl- type influenza virus infection, during epidemic last year.