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Pulmonary fibrosis secondary to COVID-19: a narrative review
Suzana Erico Tanni1, Alexandre Todorovic Fabro2, André de Albuquerque3
1Division of Internal Medicine of Botucatu Medical School, São Paulo State University-UNESP, Botucatu, Brazil.
Insights
Pulmonary fibrosis can occur after COVID-19 infection. Early screening and further research are crucial for understanding and managing this serious lung condition.
Area of Science:
- Pulmonology
- Infectious Diseases
- Pathology
Background:
- The global increase in COVID-19 cases leads to a rising number of patients developing secondary pulmonary fibrosis.
- Key aspects of post-COVID-19 pulmonary fibrosis, including risk factors, pathophysiology, and management, remain poorly understood.
- Pulmonary sequelae post-COVID-19 necessitate its inclusion in the differential diagnosis of pulmonary fibrosis.
Purpose of the Study:
- To review current evidence on post-COVID-19 pulmonary fibrosis.
- To emphasize potential risk factors, histopathology, pathophysiology, and clinical features.
- To discuss potential therapeutic strategies and the need for further research.
Main Methods:
- A comprehensive literature search was conducted in MEDLINE, Embase, SciELO, and the Cochrane library.
- The search covered studies published between December 1, 2019, and January 25, 2021.
- Relevant studies were reviewed and synthesized for this narrative review.
Main Results:
- Post-COVID-19 pulmonary fibrosis is an emerging clinical concern with incompletely understood characteristics.
- The review highlights the need to consider COVID-19 as a cause of pulmonary fibrosis.
- Clinical, tomographic, and functional screening is recommended for patients with prior pulmonary involvement during acute COVID-19.
Conclusions:
- Pulmonary fibrosis is a potential long-term consequence of COVID-19 infection.
- Serial screening for pulmonary fibrosis is advised for at-risk individuals post-COVID-19.
- Further research is essential to elucidate risk factors, biomarkers, pathophysiology, and optimal management strategies.
Abstract:
Introduction: Coronavirus disease 2019 (COVID-19) is still increasing worldwide, and as a result, the number of patients with pulmonary fibrosis secondary to COVID-19 will expand over time. Risk factors, histopathological characterization, pathophysiology, prevalence, and management of post-COVID-19 pulmonary fibrosis are poorly understood, and few studies have addressed these issues.Areas covered:This article reviews the current evidence regarding post-COVID-19 pulmonary fibrosis, with an emphasis on the potential risk factors, histopathology, pathophysiology, functional and tomographic features, and potential therapeutic modalities. A search on the issue was performed in the MEDLINE, Embase, and SciELO databases and the Cochrane library between 1 December 2019, and 25 January 2021. Studies were reviewed and relevant topics were incorporated into this narrative review. Expert opinion: Pulmonary sequelae may occur secondary to COVID-19, which needs to be included as a potential etiology in the current differential diagnosis of pulmonary fibrosis. Therefore, serial clinical, tomographic, and functional screening for pulmonary fibrosis is recommended after COVID-19, mainly in patients with pulmonary involvement in the acute phase of the disease. Further studies are necessary to determine the risk factors, markers, pathophysiology, and appropriate management of post-COVID-19 pulmonary fibrosis.
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