Swine-Origin Influenza A (H1N1) Viral Infection: Thoracic Findings on CT

Marchiori, Edson; Zanetti, Gláucia; D'Ippólito, Giuseppe; Verrastro, Carlos Gustavo Yuji; Meirelles, Gustavo de Souza Portes; Capobianco, Júlia; Rodrigues, Rosana Souza

doi:10.2214/ajr.10.5109

Cited by 37 publications

(31 citation statements)

References 15 publications

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“…One patient in our study showed the crazy-paving pattern. This finding was previously described in immunocompetent patients (21,22). Another patient showed signs of chronic disease with irregular linear opacities and bronchiectasis.…”

Section: Discussionsupporting

confidence: 89%

Chest computed tomography findings in severe influenza pneumonia occurring in neutropenic cancer patients

Rodrigues¹,

Marchiori²,

Bozza³

et al. 2012

Clinics

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OBJECTIVE:To describe the chest computed tomography findings for severe influenza H1N1 infection in a series of hospitalized neutropenic cancer patients.METHODS:We performed a retrospective systematic analysis of chest computed tomography scans for eight hospitalized patients with fever, neutropenia, and confirmed diagnoses of influenza H1N1. The clinical data had been prospectively collected.RESULTS:Six of eight patients (75%) developed respiratory failure and required intensive care. Prolonged H1N1 shedding was observed in the three mechanically ventilated patients, and overall hospital mortality in our series was 25%. The most frequent computed tomography findings were ground-glass opacity (all patients), consolidation (7/8 cases), and airspace nodules (6/8 cases) that were frequently moderate or severe. Other parenchymal findings were not common. Five patients had features of pneumonia, two had computed tomography findings compatible with bronchitis and/or bronchiolitis, and one had tomographic signs of chronicity.CONCLUSION:In this series of neutropenic patients with severe influenza H1N1 infection, chest computed tomography demonstrated mainly moderate or severe parenchymatous disease, but bronchiolitis was not a common feature. These findings associated with febrile neutropenia should elicit a diagnosis of severe viral infection.

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Section: Discussionsupporting

confidence: 89%

Chest computed tomography findings in severe influenza pneumonia occurring in neutropenic cancer patients

Rodrigues¹,

Marchiori²,

Bozza³

et al. 2012

Clinics

Self Cite

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show abstract

“…However, there is a report that clinical fi ndings and imaging appearances are suggestive of small airway disease in H1N1 infection. 17 The characteristic peribronchial cuffi ng, air-trapping, and nodules in the present series may support this suggestion, and these CT fi ndings related to small airway disease might be a causative factor of severe dyspnea and, accordingly, be associated with a higher incidence of air-leak complication than with other types of infection in allergic or asthmatic patients.…”

Section: Discussionsupporting

confidence: 78%

Swine-origin influenza A viral (H1N1) infection in children: chest computed tomography findings

Kim

Yoon

et al. 2011

Jpn J Radiol

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“…Pulmonary emboli lobar, segmental and subsegmental pulmonary arteries, and unilateral or bilateral pleural effusion are defined in these patients. Alveolar hemorrhage is also observed, related to the viral infection [5, 6]. …”

Section: Discussionmentioning

confidence: 99%

Infrarenal Aorta Thrombosis Associated with H1N1 Influenza A Virus Infection

Hüzmelí

Sağlam

Arıkan

et al. 2016

Case Reports in Infectious Diseases

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Influenza viruses are members of the Orthomyxoviridae family, of which influenza A, B, and C viruses constitute three separate genera. Arterial thrombosis associated with H1N1 influenza A virus infection has rarely been reported. A Turkish man aged 28 years was admitted to our emergency department with dyspnea, bilateral lower extremity insensitivity, and cold. He reported symptoms of fever, myalgia, and cough, which he had had for fifteen days before being admitted to our hospital. The patient was tested for pandemic influenza A (H1N1) virus using polymerase chain reaction (PCR) tests, which were positive. Abdominal computerized tomography with contrast revealed a large occlusive thrombus within the infrarenal aorta.

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Swine-Origin Influenza A (H1N1) Viral Infection: Thoracic Findings on CT

Cited by 37 publications

References 15 publications

Chest computed tomography findings in severe influenza pneumonia occurring in neutropenic cancer patients

Chest computed tomography findings in severe influenza pneumonia occurring in neutropenic cancer patients

Swine-origin influenza A viral (H1N1) infection in children: chest computed tomography findings

Infrarenal Aorta Thrombosis Associated with H1N1 Influenza A Virus Infection

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