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      Usual Interstitial Pneumonia is the Most Common Finding in Surgical Lung Biopsies from Patients with Persistent Interstitial Lung Disease Following Infection with SARS-CoV-2

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          Abstract

          Background

          There is increasing interest in persistent interstitial lung disease (ILD) following resolution of acute COVID-19. No studies have yet reported findings in surgical lung biopsies (SLB) from this patient population.

          Methods

          Our Michigan Medicine pathology database was queried for SLB reviewed between January 2020 and April 2021 from patients with persistent ILD following recovery from acute COVID-19. Slides for our retrospective observational study were independently reviewed by two thoracic pathologists, who were blinded to patient clinical data, radiographic findings, and previous pathologic diagnosis.

          Findings

          Eighteen cases met inclusion criteria. Of these, nine had usual interstitial pneumonia (UIP). These included two patients with superimposed acute lung injury (ALI). Five cases showed a spectrum of ALI that ranged from persistent diffuse alveolar damage to organizing pneumonia. Four patients had desquamative interstitial pneumonia (1), acute and organizing bronchopneumonia (1), or no diagnostic abnormality (2). Compared to patients without UIP, those with UIP tended to be older and have pre-existing lung disease prior to COVID-19. In patients with UIP, pre-SLB chest computed tomography changes included groundglass with interstitial thickening or peripheral reticulations with bronchiectasis; no UIP patients had groundglass only. The most common radiographic finding in patients without UIP was groundglass opacities only.

          Interpretation

          UIP was the most common pathologic finding in patients undergoing evaluation for post-COVID-19 ILD. Our preliminary data suggests that CT changes described as interstitial thickening, peripheral reticulations, and/or bronchiectasis may be helpful in identifying patients with underlying fibrotic chronic interstitial pneumonia for which UIP is the chief concern.

          Funding

          No intramural or extramural funding sources supported this work.

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          Most cited references20

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          6-month consequences of COVID-19 in patients discharged from hospital: a cohort study

          Chaolin Huang, Lixue Huang, Yeming Wang … (2021)
          Background The long-term health consequences of COVID-19 remain largely unclear. The aim of this study was to describe the long-term health consequences of patients with COVID-19 who have been discharged from hospital and investigate the associated risk factors, in particular disease severity. Methods We did an ambidirectional cohort study of patients with confirmed COVID-19 who had been discharged from Jin Yin-tan Hospital (Wuhan, China) between Jan 7, 2020, and May 29, 2020. Patients who died before follow-up, patients for whom follow-up would be difficult because of psychotic disorders, dementia, or re-admission to hospital, those who were unable to move freely due to concomitant osteoarthropathy or immobile before or after discharge due to diseases such as stroke or pulmonary embolism, those who declined to participate, those who could not be contacted, and those living outside of Wuhan or in nursing or welfare homes were all excluded. All patients were interviewed with a series of questionnaires for evaluation of symptoms and health-related quality of life, underwent physical examinations and a 6-min walking test, and received blood tests. A stratified sampling procedure was used to sample patients according to their highest seven-category scale during their hospital stay as 3, 4, and 5–6, to receive pulmonary function test, high resolution CT of the chest, and ultrasonography. Enrolled patients who had participated in the Lopinavir Trial for Suppression of SARS-CoV-2 in China received severe acute respiratory syndrome coronavirus 2 antibody tests. Multivariable adjusted linear or logistic regression models were used to evaluate the association between disease severity and long-term health consequences. Findings In total, 1733 of 2469 discharged patients with COVID-19 were enrolled after 736 were excluded. Patients had a median age of 57·0 (IQR 47·0–65·0) years and 897 (52%) were men. The follow-up study was done from June 16, to Sept 3, 2020, and the median follow-up time after symptom onset was 186·0 (175·0–199·0) days. Fatigue or muscle weakness (63%, 1038 of 1655) and sleep difficulties (26%, 437 of 1655) were the most common symptoms. Anxiety or depression was reported among 23% (367 of 1617) of patients. The proportions of median 6-min walking distance less than the lower limit of the normal range were 24% for those at severity scale 3, 22% for severity scale 4, and 29% for severity scale 5–6. The corresponding proportions of patients with diffusion impairment were 22% for severity scale 3, 29% for scale 4, and 56% for scale 5–6, and median CT scores were 3·0 (IQR 2·0–5·0) for severity scale 3, 4·0 (3·0–5·0) for scale 4, and 5·0 (4·0–6·0) for scale 5–6. After multivariable adjustment, patients showed an odds ratio (OR) 1·61 (95% CI 0·80–3·25) for scale 4 versus scale 3 and 4·60 (1·85–11·48) for scale 5–6 versus scale 3 for diffusion impairment; OR 0·88 (0·66–1·17) for scale 4 versus scale 3 and OR 1·77 (1·05–2·97) for scale 5–6 versus scale 3 for anxiety or depression, and OR 0·74 (0·58–0·96) for scale 4 versus scale 3 and 2·69 (1·46–4·96) for scale 5–6 versus scale 3 for fatigue or muscle weakness. Of 94 patients with blood antibodies tested at follow-up, the seropositivity (96·2% vs 58·5%) and median titres (19·0 vs 10·0) of the neutralising antibodies were significantly lower compared with at the acute phase. 107 of 822 participants without acute kidney injury and with estimated glomerular filtration rate (eGFR) 90 mL/min per 1·73 m2 or more at acute phase had eGFR less than 90 mL/min per 1·73 m2 at follow-up. Interpretation At 6 months after acute infection, COVID-19 survivors were mainly troubled with fatigue or muscle weakness, sleep difficulties, and anxiety or depression. Patients who were more severely ill during their hospital stay had more severe impaired pulmonary diffusion capacities and abnormal chest imaging manifestations, and are the main target population for intervention of long-term recovery. Funding National Natural Science Foundation of China, Chinese Academy of Medical Sciences Innovation Fund for Medical Sciences, National Key Research and Development Program of China, Major Projects of National Science and Technology on New Drug Creation and Development of Pulmonary Tuberculosis, and Peking Union Medical College Foundation.
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            Diagnosis of Idiopathic Pulmonary Fibrosis. An Official ATS/ERS/JRS/ALAT Clinical Practice Guideline

            Ganesh Raghu, Martine Remy-Jardin, Jeffrey L Myers … (2018)
            This document provides clinical recommendations for the diagnosis of idiopathic pulmonary fibrosis (IPF). It represents a collaborative effort between the American Thoracic Society, European Respiratory Society, Japanese Respiratory Society, and Latin American Thoracic Society.
            Article 0 comments Cited 1085 times – based on 0 reviews     Review now
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              An official American Thoracic Society/European Respiratory Society statement: Update of the international multidisciplinary classification of the idiopathic interstitial pneumonias.

              William Travis, Ulrich Costabel, David Hansell … (2013)
              In 2002 the American Thoracic Society/European Respiratory Society (ATS/ERS) classification of idiopathic interstitial pneumonias (IIPs) defined seven specific entities, and provided standardized terminology and diagnostic criteria. In addition, the historical "gold standard" of histologic diagnosis was replaced by a multidisciplinary approach. Since 2002 many publications have provided new information about IIPs. The objective of this statement is to update the 2002 ATS/ERS classification of IIPs. An international multidisciplinary panel was formed and developed key questions that were addressed through a review of the literature published between 2000 and 2011. Substantial progress has been made in IIPs since the previous classification. Nonspecific interstitial pneumonia is now better defined. Respiratory bronchiolitis-interstitial lung disease is now commonly diagnosed without surgical biopsy. The clinical course of idiopathic pulmonary fibrosis and nonspecific interstitial pneumonia is recognized to be heterogeneous. Acute exacerbation of IIPs is now well defined. A substantial percentage of patients with IIP are difficult to classify, often due to mixed patterns of lung injury. A classification based on observed disease behavior is proposed for patients who are difficult to classify or for entities with heterogeneity in clinical course. A group of rare entities, including pleuroparenchymal fibroelastosis and rare histologic patterns, is introduced. The rapidly evolving field of molecular markers is reviewed with the intent of promoting additional investigations that may help in determining diagnosis, and potentially prognosis and treatment. This update is a supplement to the previous 2002 IIP classification document. It outlines advances in the past decade and potential areas for future investigation.
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                Author and article information

                Journal
                Journal ID (nlm-ta): EClinicalMedicine
                Journal ID (iso-abbrev): EClinicalMedicine
                Title: EClinicalMedicine
                Publisher: The Author(s). Published by Elsevier Ltd.
                ISSN (Electronic): 2589-5370
                Publication date PMC-release: 23 November 2021
                Publication date (Electronic): 23 November 2021
                Electronic Location Identifier: 101209
                Affiliations
                [0001]Department of Pathology, University of Michigan, Ann Arbor, MI, USA
                Author notes
                [* ] Corresponding author: Jeffrey L. Myers, MD, 2800 Plymouth Rd, Building 35, Ann Arbor, MI 48109, USA
                Article
                Publisher Item ID: S2589-5370(21)00490-9 Publisher ID: 101209
                DOI: 10.1016/j.eclinm.2021.101209
                PMC ID: 8609167
                PubMed ID: 34841234
                SO-VID: 397c2de9-8b55-4816-b6eb-548499738e83
                Copyright © © 2021 The Author(s)
                License:

                Since January 2020 Elsevier has created a COVID-19 resource centre with free information in English and Mandarin on the novel coronavirus COVID-19. The COVID-19 resource centre is hosted on Elsevier Connect, the company's public news and information website. Elsevier hereby grants permission to make all its COVID-19-related research that is available on the COVID-19 resource centre - including this research content - immediately available in PubMed Central and other publicly funded repositories, such as the WHO COVID database with rights for unrestricted research re-use and analyses in any form or by any means with acknowledgement of the original source. These permissions are granted for free by Elsevier for as long as the COVID-19 resource centre remains active.

                History
                Date received : 5 August 2021
                Date revision received : 2 November 2021
                Date accepted : 3 November 2021
                Categories
                Subject: Article

                Keywords: coronavirus,interstitial lung disease,lung pathology
                Data availability:
                Keywords: coronavirus, interstitial lung disease, lung pathology

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