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Althobiani MA, Russell AM, Jacob J, Ranjan Y, Folarin AA, Hurst JR, Porter JC. Interstitial lung disease: a review of classification, etiology, epidemiology, clinical diagnosis, pharmacological and non-pharmacological treatment. Front Med (Lausanne) 2024; 11:1296890. [PMID: 38698783 PMCID: PMC11063378 DOI: 10.3389/fmed.2024.1296890] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Accepted: 03/26/2024] [Indexed: 05/05/2024] Open
Abstract
Interstitial lung diseases (ILDs) refer to a heterogeneous and complex group of conditions characterized by inflammation, fibrosis, or both, in the interstitium of the lungs. This results in impaired gas exchange, leading to a worsening of respiratory symptoms and a decline in lung function. While the etiology of some ILDs is unclear, most cases can be traced back to factors such as genetic predispositions, environmental exposures (including allergens, toxins, and air pollution), underlying autoimmune diseases, or the use of certain medications. There has been an increase in research and evidence aimed at identifying etiology, understanding epidemiology, improving clinical diagnosis, and developing both pharmacological and non-pharmacological treatments. This review provides a comprehensive overview of the current state of knowledge in the field of interstitial lung diseases.
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Affiliation(s)
- Malik A. Althobiani
- Royal Free Campus, UCL Respiratory, University College London, London, United Kingdom
- Department of Respiratory Therapy, Faculty of Medical Rehabilitation Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Anne-Marie Russell
- School of Health and Care Professions, University of Exeter, Exeter, United Kingdom
- School of Medicine and Health, University of Birmingham, Birmingham, United Kingdom
| | - Joseph Jacob
- UCL Respiratory, University College London, London, United Kingdom
- Satsuma Lab, Centre for Medical Image Computing, University College London Respiratory, University College London, London, United Kingdom
| | - Yatharth Ranjan
- Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, United Kingdom
| | - Amos A. Folarin
- Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, United Kingdom
- NIHR Biomedical Research Centre at South London and Maudsley NHS Foundation Trust, King's College London, London, United Kingdom
- Institute of Health Informatics, University College London, London, United Kingdom
- NIHR Biomedical Research Centre at University College London Hospitals, NHS Foundation Trust, London, United Kingdom
| | - John R. Hurst
- Royal Free Campus, UCL Respiratory, University College London, London, United Kingdom
| | - Joanna C. Porter
- UCL Respiratory, University College London, London, United Kingdom
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Kırkıl G. Predictors of Mortality in Sarcoidosis. Clin Chest Med 2024; 45:175-183. [PMID: 38245365 DOI: 10.1016/j.ccm.2023.06.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2024]
Abstract
Sarcoidosis is a systemic granulomatous disorder that affects individuals of all racial/ethnic origins and occurs at any time of life. Spontaneous remission is frequent and may occur in 2 of 3 patients, while the remaining cases have chronic, progressive disease, with some patients presenting with organ- and life-threatening involvements. Many reports have investigated which features may be related to poor outcomes in patients with sarcoidosis. Pulmonary hypertension and respiratory failure from pulmonary fibrosis are the most common complications associated with the cause of death in sarcoidosis. Other major causes of death include cardiac, neurologic, hepatic involvement, and hemoptysis from aspergilloma.
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Affiliation(s)
- Gamze Kırkıl
- Medicine Faculty, Department of Chest Disease, Firat University, Elazig 23200, Turkey.
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Patterson KC, Miller WT, Hancock WW, Akimova T. FOXP3+ regulatory T cells are associated with the severity and prognosis of sarcoidosis. Front Immunol 2023; 14:1301991. [PMID: 38173720 PMCID: PMC10761433 DOI: 10.3389/fimmu.2023.1301991] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Accepted: 12/06/2023] [Indexed: 01/05/2024] Open
Abstract
Rationale Sarcoidosis is an inflammatory granulomatous disease of unknown etiology with predominant lung involvement. Organ involvement and disease severity, as well as the nature of immune alterations, vary among patients leading to a range of clinical phenotypes and outcomes. Our objective was to evaluate the association of disease course and immune responses in pulmonary sarcoidosis. Methods In this prospective cohort study of 30 subjects, most of whom were followed for one year, we evaluated 14 inflammatory markers in plasma, 13 Treg/T cell flow cytometry markers and 8 parameters of FOXP3+ Treg biology, including suppressive function, epigenetic features and stability. Results We identified a set of 13 immunological parameters that differ in sarcoidosis subjects in comparison with healthy donors. Five of those were inversely correlated with suppressive function of Tregs in sarcoidosis, and six (TNFα, TNFR I and II, sCD25, Ki-67 and number of Tregs) were particularly upregulated or increased in subjects with thoracic lymphadenopathy. Treg suppressive function was significantly lower in patients with thoracic lymphadenopathy, and in patients with higher burdens of pulmonary and systemic symptoms. A combination of five inflammatory markers, Ki-67 expression, Treg function, and lung diffusion capacity evaluated at study entry predicted need for therapy at one year follow-up in 90% of cases. Conclusion Tregs may suppress ongoing inflammation at local and systemic levels, and TNFα, TNFR I and II, sCD25 and Ki-67 emerge as attractive biomarkers for in vivo sarcoid inflammatory activity.
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Affiliation(s)
- Karen C. Patterson
- Division of Pulmonary, Allergy, and Critical Care Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, United States
| | - Wallace T. Miller
- Department of Radiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, United States
| | - Wayne W. Hancock
- Division of Transplant Immunology, Department of Pathology and Laboratory Medicine, and Biesecker Center for Pediatric Liver Diseases, Children’s Hospital of Philadelphia and Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, United States
| | - Tatiana Akimova
- Division of Transplant Immunology, Department of Pathology and Laboratory Medicine, and Biesecker Center for Pediatric Liver Diseases, Children’s Hospital of Philadelphia and Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, United States
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Moor CC, Obi ON, Kahlmann V, Buschulte K, Wijsenbeek MS. Quality of life in sarcoidosis. J Autoimmun 2023:103123. [PMID: 37813805 DOI: 10.1016/j.jaut.2023.103123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Accepted: 10/04/2023] [Indexed: 10/11/2023]
Abstract
Having sarcoidosis often has a major impact on quality of life of patients and their families. Improving quality of life is prioritized as most important treatment aim by many patients with sarcoidosis, but current evidence and treatment options are limited. In this narrative review, we describe the impact of sarcoidosis on various aspects of daily life, evaluate determinants of health-related quality of life (HRQoL), and provide an overview of the different patient-reported outcome measures to assess HRQoL in sarcoidosis. Moreover, we review the current evidence for pharmacological and non-pharmacological interventions to improve quality of life for people with sarcoidosis.
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Affiliation(s)
- Catharina C Moor
- Department of Respiratory Medicine, Centre of Excellence for Interstitial Lung Diseases and Sarcoidosis, Erasmus Medical Center, Rotterdam, the Netherlands
| | - Ogugua Ndili Obi
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Internal Medicine, Brody School of Medicine, East Carolina University, Greenville, NC, USA
| | - Vivienne Kahlmann
- Department of Respiratory Medicine, Centre of Excellence for Interstitial Lung Diseases and Sarcoidosis, Erasmus Medical Center, Rotterdam, the Netherlands
| | - Katharina Buschulte
- Center for Interstitial and Rare Lung Diseases, Pneumology and Respiratory Critical Care Medicine, Thoraxklinik, University of Heidelberg, German Center for Lung Research (DZL), Heidelberg, Germany
| | - Marlies S Wijsenbeek
- Department of Respiratory Medicine, Centre of Excellence for Interstitial Lung Diseases and Sarcoidosis, Erasmus Medical Center, Rotterdam, the Netherlands.
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5
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Judson MA. The Symptoms of Pulmonary Sarcoidosis. J Clin Med 2023; 12:6088. [PMID: 37763028 PMCID: PMC10532418 DOI: 10.3390/jcm12186088] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Revised: 09/12/2023] [Accepted: 09/15/2023] [Indexed: 09/29/2023] Open
Abstract
The aim of this manuscript is to provide a comprehensive review of the etiology, measurement, and treatment of common pulmonary symptoms associated with sarcoidosis. The assessment of symptoms associated with pulmonary sarcoidosis is an important component of disease management. Some symptoms of pulmonary sarcoidosis are sensitive but nonspecific markers of disease activity, and the absence of such symptoms provides evidence that the disease is quiescent. Although quantifiable objective measurements of pulmonary physiology and chest imaging are important in the assessment of pulmonary sarcoidosis, they correlate poorly with the patient's quality of life. Because the symptoms of pulmonary sarcoidosis directly relate to how the patient feels, they are reasonable endpoints in terms of clinical research and individual patient care. Recently, the symptoms of pulmonary sarcoidosis are capable of being quantified via patient-reported outcome measures and electronic devices. We conclude that a thorough assessment of the symptoms associated with pulmonary sarcoidosis improves patient care because it is a useful screen for manifestations of the disease, provides insight into the pathophysiology of manifestations of sarcoidosis, and may assist in optimizing treatment.
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Affiliation(s)
- Marc A Judson
- Division of Pulmonary and Critical Care Medicine, Albany Medical College, Albany, NY 12208, USA
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Janssen MTHF, Landewé RBM, Post MC, Erckens RJ, Mostard RLM. Organ involvement and assessment in sarcoidosis. Curr Opin Pulm Med 2023; 29:485-492. [PMID: 37461850 DOI: 10.1097/mcp.0000000000000997] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/03/2023]
Abstract
PURPOSE OF REVIEW In recent years new recommendations have been published about organ assessment in the diagnosis of sarcoidosis. RECENT FINDINGS Screening for pulmonary, cardiac, ocular, neurologic and renal involvement and hypercalcemia is recommended in the work-up for sarcoidosis, additionally, screening for hypercalciuria at the time of the diagnosis might be beneficial. SUMMARY One of the goals in the work-up of sarcoidosis is to assess the extent and severity of organ involvement. Timely and accurate assessment leads to determination of treatment indication. Screening for pulmonary involvement should include pulmonary imaging and pulmonary function tests. Screening for cardiac involvement should include a clear history including palpitations and collapse and a baseline electrocardiogram or 24-h Holter monitoring. At diagnosis, ophthalmological assessment is recommended. Furthermore, serum calcium level and serum creatinine level should be obtained. Although routine 24-h urinary calcium excretion is not included in the guidelines, performing this test routinely can be considered. On indication, neurologic, rheumatologic or dermatologic assessment can be performed.
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Affiliation(s)
| | - Robert B M Landewé
- Department of Rheumatology, Zuyderland Medical Centre, Heerlen, Limburg
- Department of Clinical Immunology & Rheumatology, Amsterdam Rheumatology Centre, Amsterdam
| | - Marco C Post
- Department of Cardiology, St. Antonius Hospital Nieuwegein and Utrecht
- Department of Cardiology, University Medical Centre Utrecht, Utrecht
| | | | - Rémy L M Mostard
- Department of Pulmonology
- Department of Pulmonology, Maastricht University Medical Centre+, Maastricht, Limburg, The Netherlands
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Quijano-Campos JC, Sekhri N, Thillai M, Sanders J. Health-related quality of life in cardiac sarcoidosis: a systematic review. EUROPEAN HEART JOURNAL OPEN 2023; 3:oead009. [PMID: 36974155 PMCID: PMC10039618 DOI: 10.1093/ehjopen/oead009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Revised: 12/25/2022] [Accepted: 02/14/2023] [Indexed: 02/20/2023]
Abstract
People living with cardiac sarcoidosis (CS) are likely to have worse clinical outcomes and greater impairment on health-related quality of life (HRQoL) than other sarcoidosis manifestations. CS can result in a constellation of intrusive symptoms (such as palpitations, dizziness, syncope/pre-syncope, chest pain, dyspnoea, orthopnoea, or peripheral oedema) and/or life-threatening episodes, requiring consideration of invasive cardiac procedures for diagnosis and for the management of acute events. Additionally, the presence of multisystemic involvement and persistent non-specific sarcoidosis symptoms negatively affect HRQoL. A systematic review was undertaken to explore the impact of CS on HRQoL in adults with CS. Multiple bibliographic databases were searched for studies with HRQoL as primary or secondary outcomes in CS (PROSPERO registration: CRD42019119752). Data extraction and quality assessments were undertaken independently by two authors. From the initial 1609 identified records, only 11 studies included CS patients but none specifically reported HRQoL scores for CS patients. The average representation of CS patients was 14.5% within these cohorts (range 2-22%). The majority (73%) was conducted in single-centre tertiary care settings, and only one study (9%) included longitudinal HRQoL data. CS patients were among those sarcoidosis patients with impaired HRQoL and worse outcomes, requiring higher doses of sarcoidosis-specific therapy which contribute to further deterioration of HRQoL. Sarcoidosis studies do not incorporate stratified HRQoL scores for CS patients. While there is a need for longitudinal and multicentre studies assessing HRQoL outcomes in CS cohorts, the development of CS-specific tools is also needed.
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Affiliation(s)
- Juan Carlos Quijano-Campos
- William Harvey Research Institute, Queen Mary University of London, Charterhouse Square, London EC1M 6BQ, UK
- St Bartholomew’s Hospital, Barts Health NHS Trust, West Smithfield, London EC1A 7DN, UK
- Research & Development, Royal Papworth Hospital NHS Foundation Trust, Papworth Road, Cambridge CB2 0AY, UK
| | - Neha Sekhri
- Barts Heart Centre, St Bartholomew’s Hospital, Barts Health NHS Trust, West Smithfield, London EC1A 7BE, UK
| | - Muhunthan Thillai
- Interstitial Lung Disease Unit, Royal Papworth Hospital NHS Foundation Trust, Papworth Road, Cambridge CB2 0AY, UK
- Department of Medicine, School of Clinical Medicine, University of Cambridge, Cambridge CB2 0SP, UK
| | - Julie Sanders
- William Harvey Research Institute, Queen Mary University of London, Charterhouse Square, London EC1M 6BQ, UK
- St Bartholomew’s Hospital, Barts Health NHS Trust, West Smithfield, London EC1A 7DN, UK
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A. Judson1 M. The ability to predict the clinical course of pulmonary sarcoidosis from data that is right in front of us. J Bras Pneumol 2022; 48:e20220012. [PMID: 35137877 PMCID: PMC8836621 DOI: 10.36416/1806-3756/e20220012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Affiliation(s)
- Marc A. Judson1
- 1. Division of Pulmonary and Critical Care Medicine, Albany Medical College, Albany (NY) USA
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9
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Kirkil G, Lower E, Baughman R. Advances in predicting patient survival in pulmonary sarcoidosis. Expert Opin Orphan Drugs 2021. [DOI: 10.1080/21678707.2021.1925107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Gamze Kirkil
- Medicine Faculty, Department of Chest Disease, Firat University, Elazig, Turkey
| | - Elyse Lower
- Department of Medicine, University of Cincinnati Medical Center, Cincinnati, OH, USA
| | - Robert Baughman
- Department of Medicine, Division of Pulmonary and Critical Care Medicine, Cincinnati, USA
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10
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Castro MDC, Pereira CADC. Nonlife-Threatening Sarcoidosis. Semin Respir Crit Care Med 2020; 41:733-740. [PMID: 32777854 DOI: 10.1055/s-0040-1710371] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Sarcoidosis is a systemic granulomatous disease of unknown etiology. The outcome is quite variable and is mainly related to persistent inflammatory processes and the development of fibrosis. Many prognostic factors have been described, but the disease evolution is not yet entirely known. The nonthreatening course is characterized by spontaneous involution or stability after treatment withdrawal. Löfgren's syndrome is a subset within the spectrum of sarcoidosis phenotypes, composed of acute onset of fever, bilateral hilar lymphadenopathy, erythema nodosum and/or bilateral ankle periarticular inflammation/arthritis, specifically characterized by a self-limiting disease course. In contrast, advanced fibrotic sarcoidosis with pulmonary hypertension phenotype is correlated with a poor prognosis. Further studies are necessary to detail phenotypes to better understand the mechanisms of the disease and plan future clinical therapeutic studies.
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Affiliation(s)
- Marina Dornfeld Cunha Castro
- Department of Medicine, Division of Respiratory Diseases, Interstitial Lung Diseases Center, Federal University of São Paulo (UNIFESP), São Paulo, Brazil
| | - Carlos Alberto de Castro Pereira
- Department of Medicine, Division of Respiratory Diseases, Interstitial Lung Diseases Center, Federal University of São Paulo (UNIFESP), São Paulo, Brazil
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Te HS, Perlman DM, Shenoy C, Steinberger DJ, Cogswell RJ, Roukoz H, Peterson EJ, Zhang L, Allen TL, Bhargava M. Clinical characteristics and organ system involvement in sarcoidosis: comparison of the University of Minnesota Cohort with other cohorts. BMC Pulm Med 2020; 20:155. [PMID: 32487134 PMCID: PMC7268634 DOI: 10.1186/s12890-020-01191-x] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Accepted: 05/19/2020] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Sarcoidosis is a systemic granulomatous disease of unknown etiology. Clinical cohort studies of different populations are important to understand the high variability in clinical presentation and disease course of sarcoidosis. The aim of the study is to evaluate clinical characteristics, including organ involvement, pulmonary function tests, and laboratory parameters, in a sarcoidosis cohort at the University of Minnesota. We compare the organ system involvement of this cohort with other available cohorts. METHODS We conducted a retrospective data collection and analysis of 187 subjects with biopsy-proven sarcoidosis seen at a tertiary center. Organ system involvement was determined using the WASOG sarcoidosis organ assessment instrument. Clinical phenotype groups were classified using the Genomic Research in Alpha-1 Antitrypsin Deficiency and Sarcoidosis criteria. RESULTS Mean subject age at diagnosis was 45.8 ± 12.4, with a higher proportion of males (55.1%), and a higher proportion of blacks (17.1%) compared to the racial distribution of Minnesota residents (5.95%). The majority (71.1%) of subjects required anti-inflammatory therapy for at least 1 month. Compared to the A Case Control Etiologic Study of Sarcoidosis cohort, there was a higher frequency of extra-thoracic lymph node (34.2% vs. 15.2%), eye (20.9% vs. 11.8%), liver (17.6% vs. 11.5%), spleen (20.9% vs. 6.7%), musculoskeletal (9.6% vs. 0.5%), and cardiac (10.7% vs. 2.3%) involvement in our cohort. A multisystem disease with at least five different organs involved was identified in 13.4% of subjects. A restrictive physiological pattern was observed in 21.6% of subjects, followed by an obstructive pattern in 17.3% and mixed obstructive and restrictive pattern in 2.2%. Almost half (49.2%) were Scadding stages II/III. Commonly employed disease activity markers, including soluble interleukin-2 receptor and angiotensin-converting enzyme, did not differ between treated and untreated groups. CONCLUSIONS This cohort features a relatively high frequency of high-risk sarcoidosis phenotypes including cardiac and multiorgan disease. Commonly-utilized serum biomarkers do not identify subpopulations that require or do better with treatment. Findings from this study further highlight the high-variability nature of sarcoidosis and the need for a more reliable biomarker to predict and measure disease severity and outcomes for better clinical management of sarcoidosis patients.
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Affiliation(s)
- Hok Sreng Te
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Department of Medicine, Univesity of Minnesota Medical School, Minneapolis, USA
| | - David M Perlman
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Department of Medicine, Univesity of Minnesota Medical School, Minneapolis, USA
| | - Chetan Shenoy
- Cardivascular Division, Department of Medicine, Univesity of Minnesota Medical School, Minneapolis, USA
| | - Daniel J Steinberger
- Department of Radiology, University of Minnesota Medical School, Minneapolis, USA
| | - Rebecca J Cogswell
- Cardivascular Division, Department of Medicine, Univesity of Minnesota Medical School, Minneapolis, USA
| | - Henri Roukoz
- Cardivascular Division, Department of Medicine, Univesity of Minnesota Medical School, Minneapolis, USA
| | - Erik J Peterson
- Division of Rheumatic and Autoimmune Diseases, Department of Medicine, University of Minnesota Medical School, Minneapolis, MN, USA
| | - Lin Zhang
- Division of Biostatistics, School of Public Health, University of Minnesota, Minneapolis, MN, USA
| | - Tadashi L Allen
- Department of Radiology, University of Minnesota Medical School, Minneapolis, USA
| | - Maneesh Bhargava
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Department of Medicine, Univesity of Minnesota Medical School, Minneapolis, USA.
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Iriarte A, Rubio-Rivas M, Villalba N, Corbella X, Mañá J. Clinical features and outcomes of asymptomatic pulmonary sarcoidosis. A comparative cohort study. Respir Med 2020; 169:105998. [PMID: 32442109 DOI: 10.1016/j.rmed.2020.105998] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Revised: 04/27/2020] [Accepted: 04/28/2020] [Indexed: 11/18/2022]
Abstract
OBJECTIVE To evaluate the clinical characteristics and outcomes of patients with asymptomatic pulmonary sarcoidosis (APS) detected incidentally and compare them with symptomatic non-Löfgren sarcoidosis (SnLS) patients. METHODS Patients diagnosed as having APS at a University hospital in Barcelona, Spain, followed prospectively from 1976 to 2018. APS was defined as the presence of bilateral hilar lymphadenopathy (BHL) with or without lung parenchymal involvement discovered incidentally on chest radiograph or CT scan. APS was compared with SnLS. RESULTS APS was diagnosed in 50 (13.6%) and SnLS in 317 (86.4%) patients. At diagnosis, stage I chest radiograph was significantly more frequent in APS than in SnLS (p < 0.001) and there were no asymptomatic patients with stages III and IV. SnLS showed more severe impairment in FVC (p = 0.009) and forced expiratory volume in 1st second (FEV1) (p = 0.003) than APS, while DLco was similar in both groups. Extrathoracic involvement at diagnosis and during the follow up was less frequent in APS than in SnLS patients (p < 0.005). Endobronchial ultrasonography-guided transbronchial needle aspiration (EBUS) was the most used diagnostic tool. Treatment was more frequently required in the SnLS than in APS (p < 0.001). At five years, APS patients showed less presence of active disease than SnLS (p = 0.054). CONCLUSIONS APS showed earlier radiological stages, lesser impairment in lung function, extrapulmonary organ involvement and need for treatment than SnLS. EBUS was the most useful diagnostic tool. In spite of its benign presentation, around one third of patients evolved to persistent disease but usually with mild clinical and functional impairment.
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Affiliation(s)
- Adriana Iriarte
- Autoimmune Diseases Unit, Department of Internal Medicine, Bellvitge University Hospital-IDIBELL. L'Hospitalet de Llobregat, Barcelona, Spain.
| | - Manuel Rubio-Rivas
- Autoimmune Diseases Unit, Department of Internal Medicine, Bellvitge University Hospital-IDIBELL. L'Hospitalet de Llobregat, Barcelona, Spain
| | - Nadia Villalba
- Autoimmune Diseases Unit, Department of Internal Medicine, Bellvitge University Hospital-IDIBELL. L'Hospitalet de Llobregat, Barcelona, Spain
| | - Xavier Corbella
- Autoimmune Diseases Unit, Department of Internal Medicine, Bellvitge University Hospital-IDIBELL. L'Hospitalet de Llobregat, Barcelona, Spain; Faculty of Medicine and Health Sciences, Universitat Internacional de Catalunya, Barcelona, Spain
| | - Juan Mañá
- Autoimmune Diseases Unit, Department of Internal Medicine, Bellvitge University Hospital-IDIBELL. L'Hospitalet de Llobregat, Barcelona, Spain
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