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Matyga AW, Chelala L, Chung JH. Occupational Lung Diseases: Spectrum of Common Imaging Manifestations. Korean J Radiol 2023; 24:795-806. [PMID: 37500580 PMCID: PMC10400370 DOI: 10.3348/kjr.2023.0274] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 06/07/2023] [Accepted: 06/15/2023] [Indexed: 07/29/2023] Open
Abstract
Occupational lung diseases (OLD) are a group of preventable conditions caused by noxious inhalation exposure in the workplace. Workers in various industries are at a higher risk of developing OLD. Despite regulations contributing to a decreased incidence, OLD remain among the most frequently diagnosed work-related conditions, contributing to significant morbidity and mortality. A multidisciplinary discussion (MDD) is necessary for a timely diagnosis. Imaging, particularly computed tomography, plays a central role in diagnosing OLD and excluding other inhalational lung diseases. OLD can be broadly classified into fibrotic and non-fibrotic forms. Imaging reflects variable degrees of inflammation and fibrosis involving the airways, parenchyma, and pleura. Common manifestations include classical pneumoconioses, chronic granulomatous diseases (CGD), and small and large airway diseases. Imaging is influenced by the type of inciting exposure. The findings of airway disease may be subtle or solely uncovered upon expiration. High-resolution chest CT, including expiratory-phase imaging, should be performed in all patients with suspected OLD. Radiologists should familiarize themselves with these imaging features to improve diagnostic accuracy.
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Affiliation(s)
- Alexander W Matyga
- Department of Radiology, Behavioral Sciences Department, University of Chicago, Chicago, IL, USA
| | - Lydia Chelala
- Department of Radiology, Cardiopulmonary Imaging, University of Chicago, Chicago, IL, USA
| | - Jonathan H Chung
- Department of Radiology, Cardiopulmonary Imaging, University of Chicago, Chicago, IL, USA.
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2
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Valeyre D, Brauner M, Bernaudin JF, Carbonnelle E, Duchemann B, Rotenberg C, Berger I, Martin A, Nunes H, Naccache JM, Jeny F. Differential diagnosis of pulmonary sarcoidosis: a review. Front Med (Lausanne) 2023; 10:1150751. [PMID: 37250639 PMCID: PMC10213276 DOI: 10.3389/fmed.2023.1150751] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Accepted: 04/24/2023] [Indexed: 05/31/2023] Open
Abstract
Diagnosing pulmonary sarcoidosis raises challenges due to both the absence of a specific diagnostic criterion and the varied presentations capable of mimicking many other conditions. The aim of this review is to help non-sarcoidosis experts establish optimal differential-diagnosis strategies tailored to each situation. Alternative granulomatous diseases that must be ruled out include infections (notably tuberculosis, nontuberculous mycobacterial infections, and histoplasmosis), chronic beryllium disease, hypersensitivity pneumonitis, granulomatous talcosis, drug-induced granulomatosis (notably due to TNF-a antagonists, immune checkpoint inhibitors, targeted therapies, and interferons), immune deficiencies, genetic disorders (Blau syndrome), Crohn's disease, granulomatosis with polyangiitis, eosinophilic granulomatosis with polyangiitis, and malignancy-associated granulomatosis. Ruling out lymphoproliferative disorders may also be very challenging before obtaining typical biopsy specimen. The first step is an assessment of epidemiological factors, notably the incidence of sarcoidosis and of alternative diagnoses; exposure to risk factors (e.g., infectious, occupational, and environmental agents); and exposure to drugs taken for therapeutic or recreational purposes. The clinical history, physical examination and, above all, chest computed tomography indicate which differential diagnoses are most likely, thereby guiding the choice of subsequent investigations (e.g., microbiological investigations, lymphocyte proliferation tests with metals, autoantibody assays, and genetic tests). The goal is to rule out all diagnoses other than sarcoidosis that are consistent with the clinical situation. Chest computed tomography findings, from common to rare and from typical to atypical, are described for sarcoidosis and the alternatives. The pathology of granulomas and associated lesions is discussed and diagnostically helpful stains specified. In some patients, the definite diagnosis may require the continuous gathering of information during follow-up. Diseases that often closely mimic sarcoidosis include chronic beryllium disease and drug-induced granulomatosis. Tuberculosis rarely resembles sarcoidosis but is a leading differential diagnosis in regions of high tuberculosis endemicity.
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Affiliation(s)
- Dominique Valeyre
- Pulmonology Department, Groupe Hospitalier Paris Saint Joseph, Paris, France
- INSERM UMR 1272, Sorbonne University Paris-Nord, Paris, France
| | - Michel Brauner
- Radiology Department, Avicenne University Hospital, Bobigny, France
| | - Jean-François Bernaudin
- INSERM UMR 1272, Sorbonne University Paris-Nord, Paris, France
- Faculté de Médecine, Sorbonne University Paris, Paris, France
| | | | - Boris Duchemann
- INSERM UMR 1272, Sorbonne University Paris-Nord, Paris, France
- Thoracic and Oncology Department, Avicenne University Hospital, Bobigny, France
| | - Cécile Rotenberg
- INSERM UMR 1272, Sorbonne University Paris-Nord, Paris, France
- Pulmonology Department, Avicenne University Hospital, Bobigny, France
| | - Ingrid Berger
- Pulmonology Department, Groupe Hospitalier Paris Saint Joseph, Paris, France
| | - Antoine Martin
- Pathology Department, Avicenne University Hospital, Bobigny, France
| | - Hilario Nunes
- INSERM UMR 1272, Sorbonne University Paris-Nord, Paris, France
- Pulmonology Department, Avicenne University Hospital, Bobigny, France
| | - Jean-Marc Naccache
- Pulmonology Department, Groupe Hospitalier Paris Saint Joseph, Paris, France
| | - Florence Jeny
- INSERM UMR 1272, Sorbonne University Paris-Nord, Paris, France
- Pulmonology Department, Avicenne University Hospital, Bobigny, France
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3
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Tandon YK, Walkoff L. Imaging Patterns in Occupational Lung Disease—When Should I Consider? Radiol Clin North Am 2022; 60:979-992. [DOI: 10.1016/j.rcl.2022.06.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Chiang J, Hebroni F, Bedayat A, Pourzand L. Case 286: Sarcoidlike Granulomatosis and Lymphadenopathy-Thoracic Manifestations of Nivolumab Drug Toxicity. Radiology 2021; 298:471-475. [PMID: 33493088 DOI: 10.1148/radiol.2021191247] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
History A 70-year-old man had a posterior left thigh lesion confirmed to be biopsy-proven melanoma. The patient underwent wide excision and sentinel node biopsy, which showed absence of residual melanoma. Two years later, the patient noticed a subcentimeter subcutaneous lump in his thigh. Repeat excisional biopsy showed involvement of the surrounding soft tissue, consistent with a satellite lesion. Follow-up combined PET/CT revealed satellite nodules around the primary lesion, enabling confirmation of subcutaneous metastatic disease. The patient was subsequently started on nivolumab, an anti-programmed cell death 1 (PD-1) immune checkpoint inhibitor that blocks PD-1 and is approved as a first-line treatment in patients with advanced metastatic melanoma. On the baseline scan prior to starting nivolumab, there were no CT findings that suggested metastatic disease, nor were there enlarged mediastinal or hilar lymph nodes. Five months after initiation of nivolumab treatment, the first follow-up chest CT scan was performed and showed new findings in the mediastinum and bilateral lungs. The patient remained asymptomatic during the treatment period. Furthermore, the subcutaneous metastatic disease remained stable during the treatment period, and no other site of metastatic disease was noted on follow-up CT scans obtained during the first 5 months of treatment. The patient had no prior history of infectious or occupational exposures. During the nivolumab treatment cycle, his pertinent laboratory values and physical examination findings were unremarkable.
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Affiliation(s)
- Jason Chiang
- From the Department of Radiology, Ronald Reagan UCLA Medical Center, 757 Westwood Plaza, Suite 1638, Los Angeles, CA 90095
| | - Frank Hebroni
- From the Department of Radiology, Ronald Reagan UCLA Medical Center, 757 Westwood Plaza, Suite 1638, Los Angeles, CA 90095
| | - Arash Bedayat
- From the Department of Radiology, Ronald Reagan UCLA Medical Center, 757 Westwood Plaza, Suite 1638, Los Angeles, CA 90095
| | - Lila Pourzand
- From the Department of Radiology, Ronald Reagan UCLA Medical Center, 757 Westwood Plaza, Suite 1638, Los Angeles, CA 90095
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5
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Walkoff L, Hobbs S. Chest Imaging in the Diagnosis of Occupational Lung Diseases. Clin Chest Med 2021; 41:581-603. [PMID: 33153681 DOI: 10.1016/j.ccm.2020.08.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Imaging plays a crucial role in the diagnosis and monitoring of occupational lung diseases (OLDs); however, the sensitivity and specificity of detection and diagnosis vary greatly depending on the imaging modality used. There is substantial overlap in appearance with non-occupation-related entities. OLDs should be considered in the differential even in the absence of a provided exposure history. Because many findings are not specific, a multidisciplinary approach is important in arriving at the diagnosis and will continue to be important as workplace-related pulmonary diseases evolve with changing industrial practices and workplace regulations.
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Affiliation(s)
- Lara Walkoff
- Divisions of Thoracic and Cardiovascular Radiology, Mayo Clinic College of Medicine, 200 First Street SW, Rochester, MN 55905, USA.
| | - Stephen Hobbs
- Radiology Informatics and Integrated Clinical Operations, Division of Cardiovascular and Thoracic Radiology, UK HealthCare Imaging Informatics, University of Kentucky, 800 Rose Street, HX 302, Lexington, KY 40536, USA
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Hayashi F, Kido T, Sakamoto N, Zaizen Y, Ozasa M, Yokoyama M, Yura H, Hara A, Ishimoto H, Yamaguchi H, Miyazaki T, Obase Y, Ishimatsu Y, Eishi Y, Fukuoka J, Mukae H. Pneumoconiosis with a Sarcoid-Like Reaction Other than Beryllium Exposure: A Case Report and Literature Review. ACTA ACUST UNITED AC 2020; 56:medicina56110630. [PMID: 33266389 PMCID: PMC7700418 DOI: 10.3390/medicina56110630] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 11/16/2020] [Accepted: 11/20/2020] [Indexed: 01/18/2023]
Abstract
Background: Chronic beryllium disease (CBD) is a granulomatous disease that resembles sarcoidosis but is caused by beryllium. Clinical manifestations similar to those observed in CBD have occasionally been reported in exposure to dusts of other metals. However, reports describing the clinical, radiographic, and pathological findings in conditions other than beryllium-induced granulomatous lung diseases, and detailed information on mineralogical analyses of metal dusts, are limited. Case presentation: A 51-year-old Japanese man with rapidly progressing nodular shadows on chest radiography, and a 10-year occupation history of underground construction without beryllium exposure, was referred to our hospital. High-resolution computed tomography showed well-defined multiple centrilobular and perilobular nodules, and thickening of the intralobular septa in the middle and lower zones of both lungs. No extrathoracic manifestations were observed. Pathologically, the lung specimens showed 5–12 mm nodules with dust deposition and several non-necrotizing granulomas along the lymphatic routes. X-ray analytical electron microscopy of the same specimens revealed aluminum, iron, titanium, and silica deposition in the lung tissues. The patient stopped smoking and changed his occupation to avoid further dust exposure; the chest radiography shadows decreased 5 years later. Conclusion: The radiological appearances of CBD and sarcoidosis are similar, although mediastinal or hilar lymphadenopathy is less common in CBD and is usually seen in the presence of parenchymal opacities. Extrathoracic manifestations are also rare. Despite limited evidence, these findings are similar to those observed in pneumoconiosis with a sarcoid-like reaction due to exposure to dust other than of beryllium. Aluminum is frequently detected in patients with pneumoconiosis with a sarcoid-like reaction and is listed as an inorganic agent in the etiology of sarcoidosis. It was also detected in our patient and may have contributed to the etiology. Additionally, our case suggests that cessation of dust exposure may contribute to improvement under the aforementioned conditions.
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Affiliation(s)
- Fumiko Hayashi
- Department of Respiratory Medicine, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki 852-8501, Japan; (F.H.); (N.S.); (M.O.); (H.Y.); (A.H.); (H.I.); (H.Y.); (Y.O.); (H.M.)
| | - Takashi Kido
- Department of Respiratory Medicine, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki 852-8501, Japan; (F.H.); (N.S.); (M.O.); (H.Y.); (A.H.); (H.I.); (H.Y.); (Y.O.); (H.M.)
- Correspondence: ; Tel.: +81-95-819-7273; Fax: +81-95-849-7285
| | - Noriho Sakamoto
- Department of Respiratory Medicine, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki 852-8501, Japan; (F.H.); (N.S.); (M.O.); (H.Y.); (A.H.); (H.I.); (H.Y.); (Y.O.); (H.M.)
| | - Yoshiaki Zaizen
- Department of Pathology, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki 852-8520, Japan; (Y.Z.); (J.F.)
| | - Mutsumi Ozasa
- Department of Respiratory Medicine, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki 852-8501, Japan; (F.H.); (N.S.); (M.O.); (H.Y.); (A.H.); (H.I.); (H.Y.); (Y.O.); (H.M.)
- Department of Pathology, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki 852-8520, Japan; (Y.Z.); (J.F.)
| | - Mitsuru Yokoyama
- Department of Anatomy, University of Occupational and Environmental Health, 1-1, Iseigaoka, Yahatanishiku, Kitakyushu City, Fukuoka 807-8555, Japan;
| | - Hirokazu Yura
- Department of Respiratory Medicine, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki 852-8501, Japan; (F.H.); (N.S.); (M.O.); (H.Y.); (A.H.); (H.I.); (H.Y.); (Y.O.); (H.M.)
| | - Atsuko Hara
- Department of Respiratory Medicine, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki 852-8501, Japan; (F.H.); (N.S.); (M.O.); (H.Y.); (A.H.); (H.I.); (H.Y.); (Y.O.); (H.M.)
| | - Hiroshi Ishimoto
- Department of Respiratory Medicine, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki 852-8501, Japan; (F.H.); (N.S.); (M.O.); (H.Y.); (A.H.); (H.I.); (H.Y.); (Y.O.); (H.M.)
| | - Hiroyuki Yamaguchi
- Department of Respiratory Medicine, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki 852-8501, Japan; (F.H.); (N.S.); (M.O.); (H.Y.); (A.H.); (H.I.); (H.Y.); (Y.O.); (H.M.)
| | - Taiga Miyazaki
- Department of Infectious Diseases, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki 852-8501, Japan;
| | - Yasushi Obase
- Department of Respiratory Medicine, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki 852-8501, Japan; (F.H.); (N.S.); (M.O.); (H.Y.); (A.H.); (H.I.); (H.Y.); (Y.O.); (H.M.)
| | - Yuji Ishimatsu
- Department of Nursing, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki 852-8520, Japan;
| | - Yoshinobu Eishi
- Department of Human Pathology, Tokyo Medical and Dental University, Yushima, Bunkyo-ku, Tokyo 113-8519, Japan;
| | - Junya Fukuoka
- Department of Pathology, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki 852-8520, Japan; (Y.Z.); (J.F.)
| | - Hiroshi Mukae
- Department of Respiratory Medicine, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki 852-8501, Japan; (F.H.); (N.S.); (M.O.); (H.Y.); (A.H.); (H.I.); (H.Y.); (Y.O.); (H.M.)
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7
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Imaging in Occupational and Environmental Lung Disease. CURRENT PULMONOLOGY REPORTS 2020. [DOI: 10.1007/s13665-020-00250-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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8
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Prostate-Specific Membrane Antigen-Positive Manifestations of Chronic Beryllium Lung Disease. Clin Nucl Med 2019; 44:64-65. [PMID: 30358624 DOI: 10.1097/rlu.0000000000002323] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Three years after prostatectomy, a 78-year-old man with initial high-risk prostate cancer and new increasing prostate-specific antigen levels underwent Ga-prostate-specific membrane antigen (PSMA) PET/CT. Imaging revealed PSMA-positive pelvic, ascending retroperitoneal and left supraclavicular lymph nodes consistent with metastases. Additionally, there was PSMA-positive lymphadenopathy (hilar and mediastinal) and pulmonary changes (fibrotic and nodular) in which histopathology excluded metastases. A lymphocyte proliferation test was indicative of beryllium sensitization. Chronic beryllium lung disease-a multisystem granulomatous inflammatory disease mainly affecting the lungs-could be established in this patient with occupational exposure to beryllium. This case shows that manifestations of berylliosis can also be PSMA positive.
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9
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Abstract
Occupational lung diseases span a variety of pulmonary disorders caused by inhalation of dusts or chemical antigens in a vocational setting. Included in these are the classic mineral pneumoconioses of silicosis, coal worker's pneumoconiosis, and asbestos-related diseases as well as many immune-mediated and airway-centric diseases, and new and emerging disorders. Although some of these have characteristic imaging appearances, a multidisciplinary approach with focus on occupational exposure history is essential to proper diagnosis.
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Affiliation(s)
- Jay Champlin
- Department of Radiology, 1959 Northeast Pacific Street, RR 215, Box 357115, Seattle, WA 98195, USA.
| | - Rachael Edwards
- Department of Radiology, 1959 Northeast Pacific Street, RR 215, Box 357115, Seattle, WA 98195, USA
| | - Sudhakar Pipavath
- Department of Radiology, 1959 Northeast Pacific Street, RR 215, Box 357115, Seattle, WA 98195, USA
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10
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Abstract
PURPOSE OF REVIEW Metals can cause disease of the upper and lower respiratory tract that mirror disease due to other causes, such as asthma, rhinosinusitis, acute bronchitis, chronic bronchitis, acute pneumonitis, bronchogenic carcinoma, and interstitial lung disease. This article will describe some uncommon and unique lung diseases that can be induced by metals. RECENT FINDINGS Our understanding of old occupational lung diseases, such as chronic beryllium disease, continues to increase. New exposures in the workplace, such as indium, have been identified as novel occupational hazards. New forms of exposure, such as titanium dioxide nanoparticles, create risk of lung disease that is not seen with larger particles. SUMMARY Knowledge of several unusual and/or unique occupational lung diseases should prompt questioning about a patient's occupational history, which may uncover an occupational, rather than an idiopathic, lung disease.
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11
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Seaman DM, Meyer CA, Kanne JP. Occupational and environmental lung disease. Clin Chest Med 2015; 36:249-68, viii-ix. [PMID: 26024603 DOI: 10.1016/j.ccm.2015.02.008] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Occupational and environmental lung disease remains a major cause of respiratory impairment worldwide. Despite regulations, increasing rates of coal worker's pneumoconiosis and progressive massive fibrosis are being reported in the United States. Dust exposures are occurring in new industries, for instance, silica in hydraulic fracking. Nonoccupational environmental lung disease contributes to major respiratory disease, asthma, and COPD. Knowledge of the imaging patterns of occupational and environmental lung disease is critical in diagnosing patients with occult exposures and managing patients with suspected or known exposures.
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Affiliation(s)
- Danielle M Seaman
- Duke University Medical Center, 1612 Bivins Street, Durham, NC 27707, USA.
| | - Cristopher A Meyer
- University of Wisconsin School of Medicine and Public Health, 600 Highland Avenue, MC 3252, Madison, WI 53792, USA
| | - Jeffrey P Kanne
- University of Wisconsin School of Medicine and Public Health, 600 Highland Avenue, MC 3252, Madison, WI 53792, USA
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Balmes JR, Abraham JL, Dweik RA, Fireman E, Fontenot AP, Maier LA, Muller-Quernheim J, Ostiguy G, Pepper LD, Saltini C, Schuler CR, Takaro TK, Wambach PF. An official American Thoracic Society statement: diagnosis and management of beryllium sensitivity and chronic beryllium disease. Am J Respir Crit Care Med 2015; 190:e34-59. [PMID: 25398119 DOI: 10.1164/rccm.201409-1722st] [Citation(s) in RCA: 95] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
RATIONALE Beryllium continues to have a wide range of industrial applications. Exposure to beryllium can lead to sensitization (BeS) and chronic beryllium disease (CBD). OBJECTIVES The purpose of this statement is to increase awareness and knowledge about beryllium exposure, BeS, and CBD. METHODS Evidence was identified by a search of MEDLINE. The committee then summarized the evidence, drew conclusions, and described their approach to diagnosis and management. MAIN RESULTS The beryllium lymphocyte proliferation test is the cornerstone of both medical surveillance and the diagnosis of BeS and CBD. A confirmed abnormal beryllium lymphocyte proliferation test without evidence of lung disease is diagnostic of BeS. BeS with evidence of a granulomatous inflammatory response in the lung is diagnostic of CBD. The determinants of progression from BeS to CBD are uncertain, but higher exposures and the presence of a genetic variant in the HLA-DP β chain appear to increase the risk. Periodic evaluation of affected individuals can detect disease progression (from BeS to CBD, or from mild CBD to more severe CBD). Corticosteroid therapy is typically administered when a patient with CBD exhibits evidence of significant lung function abnormality or decline. CONCLUSIONS Medical surveillance in workplaces that use beryllium-containing materials can identify individuals with BeS and at-risk groups of workers, which can help prioritize efforts to reduce inhalational and dermal exposures.
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13
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Affiliation(s)
- Jitesh Ahuja
- Department of Radiology, University of Washington, Seattle, WA
| | - Jeffrey P Kanne
- Department of Radiology, School of Medicine and Public Health, University of Wisconsin, Madison, WI.
| | - Cristopher A Meyer
- Department of Radiology, School of Medicine and Public Health, University of Wisconsin, Madison, WI
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14
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Cox CW, Rose CS, Lynch DA. State of the Art: Imaging of Occupational Lung Disease. Radiology 2014; 270:681-96. [DOI: 10.1148/radiol.13121415] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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15
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Spagnolo P, Sverzellati N, Wells AU, Hansell DM. Imaging aspects of the diagnosis of sarcoidosis. Eur Radiol 2014; 24:807-16. [DOI: 10.1007/s00330-013-3088-3] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2013] [Revised: 11/27/2013] [Accepted: 12/12/2013] [Indexed: 01/15/2023]
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16
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Bhawna S, Ojha UC, Kumar S, Gupta R, Gothi D, Pal RS. Spectrum of high resolution computed tomography findings in occupational lung disease: experience in a tertiary care institute. J Clin Imaging Sci 2013; 3:64. [PMID: 24605259 PMCID: PMC3935267 DOI: 10.4103/2156-7514.124097] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2013] [Accepted: 08/20/2013] [Indexed: 11/12/2022] Open
Abstract
Objective: To study the spectrum of high resolution computed tomography (HRCT) findings in occupational lung disease in industrial workers and to assess the utility of International classification of HRCT for occupational and environmental respiratory diseases (ICHOERD). Materials and Methods: Retrospective analysis of radiological data (radiographs and computed tomography chest scans) gathered over a period of 3 years (January 2010- December 2012) of industrial workers in an organised sector who presented with respiratory complaints. The HRCT findings were evaluated using ICHOERD. Results: There were 5 females and 114 males in the study, with a mean age of 49 years. These workers were exposed to different harmful agents including silica, asbestos, cotton dust, metal dust, iron oxide, organic dust, rubber fumes, plastic fumes, acid fumes, and oil fumes. There were 10 smokers in the study. The radiograph of chest was normal in 53 patients. 46% of these normal patients (21.8% of total) demonstrated positive findings on HRCT. When the radiograph was abnormal, HRCT provided more accurate information and excluded the other diagnosis. The HRCT findings were appropriately described using the ICHOERD. Bronchiectasis was the most common finding (44.5%) with mild central cylindrical bronchiectasis as the most common pattern. Pleural thickening was seen in 41 patients (34.5%). Enlarged hilar or mediastinal lymphnodes were seen in 10 patients (8.4%) with egg-shell calcification in 1 patient exposed to silica. Bronchogenic carcinoma was seen in 1 patient exposed to asbestos. Conclusions: Occupational lung disease is a common work related condition in industrial workers even in the organized sector. Though chest radiograph is the primary diagnostic tool, HRCT is the undisputed Gold Standard for evaluation of these patients. Despite the disadvantage of radiation exposure, low dose CT may serve as an important tool for screening and surveillance. The ICHOERD is a powerful and reliable tool not only for diagnosis, but also for quantitative and analytical measurement of disease, thereby contributing to assessing the medical epidemiology of lung disease. It should always be used while evaluating HRCT of a patient with occupational lung disease.
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Affiliation(s)
- Satija Bhawna
- Department of Radiodiagnosis, Delhi State Cancer Institute, Employee's State Insurance Hospital and Post Graduate Institute of Medical Science and Research, Basaidarapur, New Delhi, India
| | - U C Ojha
- Institute of Occupational Health, Education and Research, Employee's State Insurance Hospital and Post Graduate Institute of Medical Science and Research, Basaidarapur, New Delhi, India
| | - Sanyal Kumar
- Department of Radiodiagnosis, Employee's State Insurance Hospital and Post Graduate Institute of Medical Science and Research, Basaidarapur, New Delhi, India
| | - Rajiv Gupta
- Department of Pulmonary Medicine, Employee's State Insurance Hospital and Post Graduate Institute of Medical Science and Research, Basaidarapur, New Delhi, India
| | - Dipti Gothi
- Department of Pulmonary Medicine, Employee's State Insurance Hospital and Post Graduate Institute of Medical Science and Research, Basaidarapur, New Delhi, India
| | - R S Pal
- Department of Pulmonary Medicine, Employee's State Insurance Hospital and Post Graduate Institute of Medical Science and Research, Basaidarapur, New Delhi, India
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17
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Satija B, Kumar S, Ojha UC, Gothi D. Spectrum of high-resolution computed tomography imaging in occupational lung disease. Indian J Radiol Imaging 2013; 23:287-96. [PMID: 24604929 PMCID: PMC3932567 DOI: 10.4103/0971-3026.125564] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Damage to the lungs caused by dusts or fumes or noxious substances inhaled by workers in certain specific occupation is known as occupational lung disease. Recognition of occupational lung disease is especially important not only for the primary worker, but also because of the implications with regard to primary and secondary disease prevention in the exposed co-workers. Although many of the disorders can be detected on chest radiography, high-resolution computed tomography (HRCT) is superior in delineating the lung architecture and depicting pathology. The characteristic radiological features suggest the correct diagnosis in some, whereas a combination of clinical features, occupational history, and radiological findings is essential in establishing the diagnosis in others. In the presence of a history of exposure and consistent clinical features, the diagnosis of even an uncommon occupational lung disease can be suggested by the characteristic described HRCT findings. In this article, we briefly review the HRCT appearance of a wide spectrum of occupational lung diseases.
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Affiliation(s)
- Bhawna Satija
- Department of Radiodiagnosis, Environment and Research, Employee's State Insurance Hospital and Post Graduate Institute of Medical Science and Research, Basaidarapur, New Delhi, India
| | - Sanyal Kumar
- Department of Radiodiagnosis, Environment and Research, Employee's State Insurance Hospital and Post Graduate Institute of Medical Science and Research, Basaidarapur, New Delhi, India
| | - Umesh Chandra Ojha
- Institute of Occupational Health, Environment and Research, Employee's State Insurance Hospital and Post Graduate Institute of Medical Science and Research, Basaidarapur, New Delhi, India
| | - Dipti Gothi
- Pulmonary Medicine, Environment and Research, Employee's State Insurance Hospital and Post Graduate Institute of Medical Science and Research, Basaidarapur, New Delhi, India
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18
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Mimics in chest disease: interstitial opacities. Insights Imaging 2012; 4:9-27. [PMID: 23247773 PMCID: PMC3579994 DOI: 10.1007/s13244-012-0207-7] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2012] [Revised: 10/01/2012] [Accepted: 11/16/2012] [Indexed: 12/19/2022] Open
Abstract
Septal, reticular, nodular, reticulonodular, ground-glass, crazy paving, cystic, ground-glass with reticular, cystic with ground-glass, decreased and mosaic attenuation pattern characterise interstitial lung diseases on high-resolution computed tomography (HRCT). Occasionally different entities mimic each other, either because they share identical HRCT findings or because of superimposition of patterns. Idiopathic pulmonary fibrosis (IPF), fibrosis associated with connective tissue disease, asbestosis, end-stage sarcoidosis or chronic hypersensitivity pneumonitis (HP) may present with lower zone, subpleural reticular pattern associated with honeycombing. Lymphangiomyomatosis may be indistinguishable from histiocytosis or extensive emphysema. Both pulmonary oedema and lymphangitic carcinomatosis may be characterised by septal pattern resulting from thickened interlobular septa. Ill-defined centrilobular nodular pattern may be identically present in HP and respiratory bronchiolitis–associated with interstitial lung disease (RBILD). Sarcoidosis may mimic miliary tuberculosis or haematogenous metastases presenting with miliary pattern, while endobronchial spread of tuberculosis may be indistinguishable from panbronchiolitis, both presenting with tree-in-bud pattern. Atypical infection presenting with ground-glass mimics haemorrhage. Ground-glass pattern with minimal reticulation is seen in desquamative interstitial pneumonia (DIP), RBILD and non-specific interstitial pneumonia (NSIP). Obliterative bronchiolitis and panlobular emphysema may present with decreased attenuation pattern, while obliterative bronchiolitis, chronic pulmonary embolism and HP may manifest with mosaic attenuation pattern. Various mimics in interstitial lung diseases exist. Differential diagnosis is narrowed based on integration of predominant HRCT pattern and clinical history. Teaching Points • To learn about the different HRCT patterns, which are related to interstitial lung diseases. • To be familiar with the more “classical” entities presenting with each HRCT pattern. • To discuss possible overlap of different HRCT patterns and the more common mimics in each case. • To learn about some clues that help differentiate the various diagnostic mimics on HRCT.
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Jawad H, Chung JH, Lynch DA, Newell JD. Radiological approach to interstitial lung disease: a guide for the nonradiologist. Clin Chest Med 2012; 33:11-26. [PMID: 22365242 DOI: 10.1016/j.ccm.2012.01.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Articles in the past have described the radiological appearances of different interstitial lung diseases (ILDs) in varying levels of detail. However, these articles have generally been written for radiologists with a background in basic chest computed tomography (CT) interpretation. This article summarizes a basic approach for diagnosing ILDs on high-resolution CT (HRCT) for the nonradiologist clinician and discusses the most common HRCT features of common ILDs.
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Affiliation(s)
- Hamza Jawad
- Division of Radiology, National Jewish Health, Denver, CO 80206, USA
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Mikulski MA, Sanderson WT, Leonard SA, Lourens S, Field RW, Sprince NL, Fuortes LJ. Prevalence of Beryllium Sensitization Among Department of Defense Conventional Munitions Workers at Low Risk for Exposure. J Occup Environ Med 2011; 53:258-65. [DOI: 10.1097/jom.0b013e31820a408a] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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21
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Abstract
Chronic beryllium disease is a rare multisystem granulomatous disease predominantly involving the lungs and resulting from an immunologic response to long-term occupational exposure. Computed tomography of the chest reveals important lung parenchymal and mediastinal findings and plays an important role in the diagnosis and follow-up assessment of patients with chronic beryllium disease. Its significance lies in the exact localization and evaluation of the extent of lesions. We present an overview of the subject and a pictorial review of the spectrum of computed tomographic features of beryllium disease.
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Abstract
Despite federally mandated safety standards, occupational lung disease remains one of the most common work-related injuries. Inhaled dust can result in a range of tissue injury in the lung and can lead to significant respiratory insufficiency causing death. Although silicosis and coal worker's pneumoconiosis are becoming less common, hypersensitivity pneumonitis is increasingly recognized as an occupational lung disease with new antigens being introduced annually. Imaging, particularly high-resolution computed tomography, is central to the management of occupational lung disease and is useful in diagnosis, assessment of disease activity, and evaluating response to therapy.
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Pipavath SN, Godwin JD, Kanne JP. Occupational Lung Disease: A Radiologic Review. Semin Roentgenol 2010; 45:43-52. [DOI: 10.1053/j.ro.2009.07.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Abstract
PURPOSE OF REVIEW This review discusses the immunology of chronic beryllium disease. It addresses the importance of the interaction between class II molecules and the T cells that recognize beryllium, along with the subsequent immune response that results in sensitization and disease, and genetic factors leading to variation in this response. RECENT FINDINGS HLA-DPB1 with a glutamic acid at amino acid position 69 (Glu69) confers increased risk of beryllium sensitization and is not specific for chronic beryllium disease. The degree of negative surface charge of the molecule may increase risk of chronic beryllium disease but not sensitization. In the absence of Glu69, HLA-DRB1 alleles may function in beryllium presentation, increasing the risk of chronic beryllium disease. The T-cell response as assessed by the beryllium lymphocyte proliferation test is dependent on central memory T-cells, while Th1 cytokine secretion leading to granulomatous inflammation and chronic beryllium disease is dependent on the activity of effector memory T cells. Polymorphisms in cytokine genes, such as the TGF-beta1 gene, also affect the risk of chronic beryllium disease and more severe disease. SUMMARY The current diagnostic criteria for sensitization and chronic beryllium disease rely on the beryllium lymphocyte proliferation test. By understanding the novel immunologic mechanisms and genetic factors associated with sensitization and chronic beryllium disease, we may improve our ability to detect beryllium health effects with new diagnostics, and hopefully refine therapies for disease.
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Maier LA, Martyny JW, Liang J, Rossman MD. Recent Chronic Beryllium Disease in Residents Surrounding a Beryllium Facility. Am J Respir Crit Care Med 2008; 177:1012-7. [DOI: 10.1164/rccm.200607-1042oc] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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26
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Computed tomography for diagnosis and grading of dust-induced occupational lung disease. Curr Opin Pulm Med 2008; 14:135-40. [DOI: 10.1097/mcp.0b013e3282f5248e] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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27
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Fireman E. The role of Bronchoalveolar Lavage (BAL) in the diagnosis of Chronic Beryllium Disease (CBD). REVISTA PORTUGUESA DE PNEUMOLOGIA 2007. [DOI: 10.1016/s0873-2159(15)30398-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Chong S, Lee KS, Chung MJ, Han J, Kwon OJ, Kim TS. Pneumoconiosis: comparison of imaging and pathologic findings. Radiographics 2006; 26:59-77. [PMID: 16418244 DOI: 10.1148/rg.261055070] [Citation(s) in RCA: 176] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Pneumoconiosis may be classified as either fibrotic or nonfibrotic, according to the presence or absence of fibrosis. Silicosis, coal worker pneumoconiosis, asbestosis, berylliosis, and talcosis are examples of fibrotic pneumoconiosis. Siderosis, stannosis, and baritosis are nonfibrotic forms of pneumoconiosis that result from inhalation of iron oxide, tin oxide, and barium sulfate particles, respectively. In an individual who has a history of exposure to silica or coal dust, a finding of nodular or reticulonodular lesions at chest radiography or small nodules with a perilymphatic distribution at thin-section computed tomography (CT), with or without eggshell calcifications, is suggestive of silicosis or coal worker pneumoconiosis. Magnetic resonance imaging is helpful for distinguishing between progressive massive fibrosis and lung cancer. CT and histopathologic findings in asbestosis are similar to those in idiopathic pulmonary fibrosis, but the presence of asbestos bodies in histopathologic specimens is specific for the diagnosis of asbestosis. Giant cell interstitial pneumonia due to exposure to hard metals is classified as a fibrotic form of pneumoconiosis and appears on CT images as mixed ground-glass opacities and reticulation. Berylliosis simulates pulmonary sarcoidosis on CT images. CT findings in talcosis include small centrilobular and subpleural nodules or heterogeneous conglomerate masses that contain foci of high attenuation indicating talc deposition. Siderosis is nonfibrotic and is indicated by a CT finding of poorly defined centrilobular nodules or ground-glass opacities.
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Affiliation(s)
- Semin Chong
- Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, 50 Ilwon-dong, Kangnam-ku, Seoul 135-710, Korea
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Abstract
INTRODUCTION Chronic beryllium disease (CBD) is an occupational lung disease caused by the inhalation of beryllium dust, fumes or metallic salts. CURRENT DATA Beryllium affects the lungs via particles deposited in the pulmonary alveoli. These are ingested by alveolar macrophages which act as antigen presenting cells to CD4+ T lymphocytes. T lymphocytes proliferate in response to beryllium antigens and combined with macrophages produce numerous epithelioid granulomas with the release of inflammatory cytokines (IFNgamma, IL-2, TNFalpha and IL6) and growth factors. Beryllium induces macrophage apoptosis which reduces its clearance from the lung which in turn contributes to the host's continual re-exposure and thus a chronic granulomatous disorder. Pulmonary granulomatous inflammation is the primary manifestation of CBD, but the disease occasionally involves other organs such as the liver, spleen, lymph nodes and bone marrow. The clinical, radiological, and histopathological features of CBD can be difficult to distinguish from sarcoidosis. The Beryllium lymphocyte proliferation test (BeLPT) demonstrates a beryllium specific immune response, confirms the diagnosis of CBD, and excludes sarcoidosis. CONCLUSIONS AND PERSPECTIVES CBD provides a human model of pulmonary granulomatous disease produced by an occupational exposure, occurring more frequently in those with a genetic pre-disposition. It can be differentiated from sarcoidosis by specific immunological testing.
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Affiliation(s)
- S Marchand-Adam
- Service de Pneumologie, Hôpital Avicenne et EA 2363, UFR SMBH, Bobigny, France
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32
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Abstract
A large and diverse group of pathologic conditions manifests clinically and radiologically as diffuse parenchymal lung disease. Diffuse interstitial lung diseases (ILDs) encompass mainly inflammatory processes that involve the structural elements of this organ. Some ILDs are caused by infections, but most are the result of immunologic, environmental, or toxic mechanisms. Currently, less morbid sampling techniques have increased dramatically the probability that pulmonologists will be faced with establishing a specific and clinically relevant diagnosis using surgical lung biopsy material. Most of the concepts presented in this article have been established using this type of specimen. In the early years of surgical lung biopsy, a small number of diffuse inflammatory conditions came to light that exclusively involved the lungs and did not seem to be caused by infection, toxin, sarcoidosis, pneumoconiosis, or neoplasm. In this article, these idiopathic disorders are discussed in the context of their dominant pathologic findings rather than presented as a separate group of entities.
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Affiliation(s)
- Kevin O Leslie
- Department of Pathology, Mayo Clinic College of Medicine, Rochester, MN, USA.
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Abstract
Occupational interstitial lung diseases are a diverse group of disorders of varied cause. Occupational causes account for a significant portion of all interstitial lung diseases, and new causes continue to be described. Although some are diseases of antiquity, they continue to occur in the workplace and often are misdiagnosed as "idiopathic" when physicians miss the connection to past-inhaled exposures. All of these diseases are preventable with reduction or elimination of workplace exposure. This article reviews the spectrum of diseases caused by exposure to metal dust and fumes, inorganic fibers, and nonfibrous inorganic dust. It also details an approach to the diagnosis, evaluation, and management of this group of illnesses.
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Affiliation(s)
- Craig S Glazer
- Division of Pulmonary and Critical Care Medicine, University of Texas Southwestern, 5323 Harry Hines Boulevard, Dallas, TX 75390-9034, USA.
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34
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Naccache JM, Marchand-Adam S, Kambouchner M, Guillon F, Monnet I, Girard F, Brauner M, Valeyre D. Ground-glass computed tomography pattern in chronic beryllium disease: pathologic substratum and evolution. J Comput Assist Tomogr 2003; 27:496-500. [PMID: 12886131 DOI: 10.1097/00004728-200307000-00007] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Five cases of chronic beryllium disease with predominant or isolated diffuse ground-glass lung opacities on computed tomography are reported with correlation to lung pathology. The ground-glass attenuation was either homogeneous and isolated (n = 1) or patchy and clearly predominant (n = 4) over linear and nodular opacities. In 4 cases, histologic samples showed a prominent diffuse involvement of the alveolar-capillary walls by florid granulomas. Evolution under corticosteroid was remarkable by the appearance of small-sized cysts in 3 cases.
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Affiliation(s)
- Jean-Marc Naccache
- Services de Pneumologie, Assistance Publique-Hôpitaux de Paris, Hôpital Avicenne, 125 rue de Stalingrad, 93009 Bobigny, France.
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36
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Abstract
The radiologist plays an important partnership role in detecting presymptomatic disease in those at risk for occupational lung disease, contributing to the specificity of the diagnosis and recognizing sentinel events. Medicolegal roles for imaging include confirming the presence of a morphologic abnormality compatible with occupational lung disease, identifying other potential causes for disability, and determining the morphologic extent of disease. This article describes and illustrates the imaging appearance of a wide range of occupational lung diseases.
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Affiliation(s)
- Jeung Sook Kim
- The Department of Radiology, University of Colorado Health Sciences Center, Denver, CO 80220, USA
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37
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Abstract
The most common of the pneumoconioses are silicosis, CWP, and asbestosis. The former two are characterized by the presence of small nodular opacities predominantly distributed in the upper zones of the lung. The small nodular opacities are classified into two patterns on HRCT: (1) ill-defined fine branching lines and (2) well-defined discrete nodules. Asbestosis demonstrates thickened interlobular and intralobular lines, subpleural dot-like or curvilinear opacities, and honeycombing on HRCT, predominantly distributed in the bases of the lungs. Although HRCT findings of other pneumoconioses are variable and nonspecific, there are predominant and characteristic findings for each type of pneumoconiosis. HRCT is useful in achieving more accurate categorization of the parenchymal changes in each type of pneumoconiosis.
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Affiliation(s)
- Masanori Akira
- Department of Radiology, National Kinki Chuo Hospital for Chest Disease, Sakai City, Osaka, Japan.
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Zinck SE, Schwartz E, Berry GJ, Leung AN. CT of noninfectious granulomatous lung disease. Radiol Clin North Am 2001; 39:1189-209, vi. [PMID: 11699668 DOI: 10.1016/s0033-8389(05)70338-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Noninfectious granulomatous diseases of the lung consist of a diverse group of disorders that logically can be subdivided into those with and without associated vasculitis. This article reviews the epidemiologic, clinical, pathologic, and radiologic features of sarcoidosis, hypersensitivity pneumonitis, berylliosis, and the five entities traditionally classified as pulmonary angiitis and granulomatosis.
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Affiliation(s)
- S E Zinck
- Department of Radiology, Stanford University Medical Center, California 94305-5105, USA.
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Abstract
We describe two newly confirmed cases of chronic beryllium disease who presented to our clinic from a facility that only used 2% beryllium copper alloy. These cases illustrate that the 2% beryllium copper alloy continues to cause chronic beryllium disease and that appropriate preventive measures must be taken to control exposures and educate industries and their workers about the hazards of beryllium alloys.
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Affiliation(s)
- R C Balkissoon
- Department of Medicine, National Jewish Medical and Research Center, Denver, Colo. 80206, USA
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40
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Gruden JF, Webb WR. Identification and evaluation of centrilobular opacities on high-resolution CT. Semin Ultrasound CT MR 1995; 16:435-49. [PMID: 8527174 DOI: 10.1016/0887-2171(95)90030-6] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Abnormal findings on high-resolution CT that are localized to the centrilobular region imply primary disease of the small airways or primary peribronchiolar or perivascular pathology. We review methods of localizing abnormal opacity to the centrilobular region and discuss differential diagnostic considerations for centrilobular disease. Straightforward ways to differentiate between primary small-airways disease and peribronchiolar or perivascular conditions are also emphasized. Although perilymphatic disorders can also be associated with centrilobular opacities, these conditions have a distinctive appearance that warrants separate categorization; distinguishing characteristics of perilymphatic disorders with respect to the centrilobular conditions are discussed.
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Affiliation(s)
- J F Gruden
- Department of Radiology, San Francisco General Hospital, CA 94110, USA
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