Computed tomography findings in patients with H1N1 influenza A infection

Amorim, Viviane Brandão; Rodrigues, Rosana Souza; Barreto, Míriam Menna; Zanetti, Gláucia; Marchiori, Edson

doi:10.1590/s0100-39842013000500006

Cited by 12 publications

(7 citation statements)

References 30 publications

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“…The imaging evaluation of the chest has been the subject of a series of recent publications in the Brazilian radiological literature ( 8 - 18 ) . With respect to PAM, studies analyzing large samples have not detected any gender predominance ( 2 ) .…”

Section: Discussionmentioning

confidence: 99%

Can chest high-resolution computed tomography findings diagnose pulmonary alveolar microlithiasis?

et al. 2015

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ObjectiveThe present study was aimed at retrospectively reviewing high-resolution computed tomography (HRCT) findings in patients with pulmonary alveolar microlithiasis in order to evaluate the frequency of tomographic findings and their distribution in the lung parenchyma.Materials and MethodsThirteen patients (9 females and 4 males; age, 9 to 59 years; mean age, 34.5 years) were included in the present study. The HRCT images were independently evaluated by two observers whose decisions were made by consensus. The inclusion criterion was the presence of abnormalities typical of pulmonary alveolar microlithiasis at HRCT, which precludes lung biopsy. However, in 6 cases lung biopsy was performed.ResultsGround-glass opacities and small parenchymal nodules were the predominant tomographic findings, present in 100% of cases, followed by small subpleural nodules (92.3%), subpleural cysts (84.6%), subpleural linear calcifications (69.2%), crazy-paving pattern (69.2%), fissure nodularity (53.8%), calcification along interlobular septa (46.2%) and dense consolidation (46.2%).ConclusionAs regards distribution of the lesions, there was preferential involvement of the lower third of the lungs. No predominance of distribution in axial and anteroposterior directions was observed.

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Section: Discussionmentioning

confidence: 99%

Can chest high-resolution computed tomography findings diagnose pulmonary alveolar microlithiasis?

et al. 2015

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“…Tomographic findings were similar to those of seasonal influenza, other viral pneumonias associated with adenovirus, respiratory syncytial virus and parainfluenza, and severe acute respiratory syndrome (SARS) caused by coronavirus (SARS-Cov-1) infection in the year 2003 [4][5][6][7][8][9][10].…”

Section: Discussionmentioning

confidence: 82%

Influenza A virus H1N1 associated pneumonia - acute and late aspects evaluated with tomography high resolution in hospitalized patients

Fontes

Santos

Oliveira³

et al. 2020

Multidis Res Med

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Background: Influenza A (H1N1) virus often compromises the respiratory tract, leading to pneumonia, which is the principal cause of death in these patients. The purpose of this study was to review the acute and late phase pulmonary findings in influenza A(H1N1) associated pneumonia using high resolution computed tomography (HRCT), and to determine the importance of performing end expiration series. Methods: Between July and August 2009, 140 patients presented with influenza A (H1N1) confirmed by real-timepolymerase chain reaction. Out of these, 27 patients underwent HRCT in the acute and late phases of pneumonia, allowing for a comparative study. Late phase exams were performed due to clinical worsening and up to 120 days later in patients with persistent complaints of dyspnea.Results: Ground glass opacities, consolidations, and the combination of both were associated with the acute phase, whereas persistence or worsening of the lesions, lesion improvement, and air trapping in the end expiration series (as seen using HRCT, n=6) were observed in the late phase.Conclusions: In the HRCT end expiration series, air trapping was found in the late phase of H1N1 associated pneumonia. Generally, these exams are not evaluated in research articles, and air trapping has not previously been studied using the end expiration series. Our study brings more scientific knowledge about aspects of pulmonary involvement by influenza A (H1N1), through evaluation with end expiration series, which makes the CT exam dynamic, translating the respiratory movement, and showing bronchial alteration.

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“…The assessment of the chest by imaging methods has been object of a series of recent publications in the Brazilian radiological literature ( 16 - 27 ) . Chest radiography is an excellent imaging method in the evaluation of pulmonary tuberculosis ( 4 ) .…”

Section: Discussionmentioning

confidence: 99%

Radiological findings of pulmonary tuberculosis in indigenous patients in Dourados, MS, Brazil

Lachi

Nakayama

2015

Radiol Bras

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ObjectiveTo describe the radiological findings of pulmonary tuberculosis in indigenous patients from the city of Dourados, MS, Brazil, according to age and sex.Materials and MethodsChest radiographic images of 81 patients with pulmonary tuberculosis, acquired in the period from 2007 to 2010, were retrospectively analyzed by two radiologists in consensus for the presence or absence of changes. The findings in abnormal radiographs were classified according to the changes observed and they were correlated to age and sex. The data were submitted to statistical analysis.ResultsThe individuals’ ages ranged from 1 to 97 years (mean: 36 years). Heterogeneous consolidations, nodules, pleural involvement and cavities were the most frequent imaging findings. Most patients (55/81 or 67.9%) were male, and upper lung and right lung were the most affected regions. Fibrosis, heterogeneous consolidations and involvement of the left lung apex were significantly more frequent in males (p < 0.05). Presence of a single type of finding at radiography was most frequent in children (p < 0.05).ConclusionBased on the hypothesis that indigenous patients represent a population without genetically determined resistance to tuberculosis, the present study may enhance the knowledge about how the pulmonary form of this disease manifests in susceptible individuals.

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Computed tomography findings in patients with H1N1 influenza A infection

Cited by 12 publications

References 30 publications

Can chest high-resolution computed tomography findings diagnose pulmonary alveolar microlithiasis?

Can chest high-resolution computed tomography findings diagnose pulmonary alveolar microlithiasis?

Influenza A virus H1N1 associated pneumonia - acute and late aspects evaluated with tomography high resolution in hospitalized patients

Radiological findings of pulmonary tuberculosis in indigenous patients in Dourados, MS, Brazil

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