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Case Report
Yumei LI
Jilin University First Hospital
Corresponding Author
ORCiD: https://orcid.org/0000-0002-7705-4950
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Background: Pulmonary arteriovenous malformation is rare and is defined as the presence of an abnormal connection between the pulmonary artery and vein. Pulmonary arteriovenous malformation can manifest with no obvious clinical symptoms and is only found incidentally on pulmonary imaging examinations. The clinical signs vary according to the shunt flow in proportion to the malformation area. In severe cases, symptoms such as exertional dyspnea, cyanosis, hemoptysis or even sudden death can occur. Untreated pulmonary arteriovenous malformation may result in cardiac failure or rupture of the aneurysmal fistula.
Case presentation: We report the case of a 1-year-old boy who presented with refractory cyanosis and a transcutaneous oxygen saturation level of 70-76%.Pulmonary arteriovenous malformation was detected on computed tomography angiogram. We chose surgical resection of the diseased lung as the treatment. The boy had a good prognosis and was followed up for 3 months without recurrence. The analysis of this case and a review of the literature improved our understanding of pulmonary arteriovenous malformation.
Conclusion: Pulmonary arteriovenous malformation should be considered when unexplained conditions such as hypoxia and hemoptysis are encountered or when pulmonary arteriovenous malformation-like mass changes are visible on chest imaging. The early identification of the problem, diagnosis, treatment and follow-up are helpful for reducing trauma and for improving the long-term outcome of children with pulmonary arteriovenous malformation.
Keywords
Pulmonary arteriovenous malformation, refractory cyanosis, pharmacotherapy, children, hereditary hemorrhagic telangiectasia, case report
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This is a preprint, a preliminary version of a manuscript that has not completed peer review at a journal. Research Square does not conduct peer review prior to posting preprints. The posting of a preprint on this server should not be interpreted as an endorsement of its validity or suitability for dissemination as established information or for guiding clinical practice.
Case Report
Yumei LI
Jilin University First Hospital
Corresponding Author
ORCiD: https://orcid.org/0000-0002-7705-4950
Badges
Prescreen
This manuscript passed our Prescreen assessment
Complete author information
Appropriate declaration statements
Potential risks to human health
Prescreen
History
CURRENT STATUS: Posted
Version 1
Posted 04 Aug, 2020
No community comments so far
Metrics
Comments: 0
PDF Downloads: ...
HTML Views: ...
Subject Areas
Pulmonology
License:
This work is licensed under a CC BY 4.0 License. Read Full License
Background: Pulmonary arteriovenous malformation is rare and is defined as the presence of an abnormal connection between the pulmonary artery and vein. Pulmonary arteriovenous malformation can manifest with no obvious clinical symptoms and is only found incidentally on pulmonary imaging examinations. The clinical signs vary according to the shunt flow in proportion to the malformation area. In severe cases, symptoms such as exertional dyspnea, cyanosis, hemoptysis or even sudden death can occur. Untreated pulmonary arteriovenous malformation may result in cardiac failure or rupture of the aneurysmal fistula.
Case presentation: We report the case of a 1-year-old boy who presented with refractory cyanosis and a transcutaneous oxygen saturation level of 70-76%.Pulmonary arteriovenous malformation was detected on computed tomography angiogram. We chose surgical resection of the diseased lung as the treatment. The boy had a good prognosis and was followed up for 3 months without recurrence. The analysis of this case and a review of the literature improved our understanding of pulmonary arteriovenous malformation.
Conclusion: Pulmonary arteriovenous malformation should be considered when unexplained conditions such as hypoxia and hemoptysis are encountered or when pulmonary arteriovenous malformation-like mass changes are visible on chest imaging. The early identification of the problem, diagnosis, treatment and follow-up are helpful for reducing trauma and for improving the long-term outcome of children with pulmonary arteriovenous malformation.
Figure 1
Figure 2
Figure 3
This is a list of supplementary files associated with this preprint. Click to download.
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