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.

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