Silicosis chest x ray: Difference between revisions

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{{Silicosis}}
{{Silicosis}}
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==Overview==
==Overview==
*A chest radiograph is obtained in virtually all patients undergoing evaluation for silicosis. It will confirm the presence of nodules in the lungs, especially in the upper lobes.  
*A [[chest radiograph]] is obtained in virtually all patients undergoing evaluation for silicosis. It will confirm the presence of [[nodules]] in the lungs, especially in the upper lobes.  
 
==Chest X Ray==
==Chest X Ray==
*In acute silicosis, the chest radiograph demonstrates characteristic bilateral, diffuse ground glass opacities <ref name="pmid9805764">{{cite journal| author=Duchange L, Brichet A, Lamblin C, Tillie I, Tonnel AB, Wallaert B| title=[Acute silicosis. Clinical, radiologic, functional, and cytologic characteristics of the broncho-alveolar fluids. Observations of 6 cases]. | journal=Rev Mal Respir | year= 1998 | volume= 15 | issue= 4 | pages= 527-34 | pmid=9805764 | doi= | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=9805764  }} </ref><ref name="pmid622482">{{cite journal| author=Dee P, Suratt P, Winn W| title=The radiographic findings in acute silicosis. | journal=Radiology | year= 1978 | volume= 126 | issue= 2 | pages= 359-63 | pmid=622482 | doi=10.1148/126.2.359 | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=622482  }} </ref>which may be perihilar or basilar . These features may progress from a pattern of lower zone opacities to large masses of coalesced parenchymal tissue in the mid and lower zones, which are typically bilateral but not always symmetrical <ref name="pmid9805764">{{cite journal| author=Duchange L, Brichet A, Lamblin C, Tillie I, Tonnel AB, Wallaert B| title=[Acute silicosis. Clinical, radiologic, functional, and cytologic characteristics of the broncho-alveolar fluids. Observations of 6 cases]. | journal=Rev Mal Respir | year= 1998 | volume= 15 | issue= 4 | pages= 527-34 | pmid=9805764 | doi= | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=9805764  }} </ref>.
*In acute silicosis, the [[chest radiograph]] demonstrates characteristic  
*The typical chest radiograph finding in chronic simple silicosis is the presence of many small round opacities of less than 10 mm in diameter, distributed predominantly in the upper lung zones. Progressive massive fibrosis (PMF, also known as conglomerate silicosis) occurs when these small opacities gradually enlarge and coalesce to form larger opacities of more than 10 mm in diameter . As these opacities progressively enlarge, the hila are retracted upward in association with upper lobe fibrosis and lower lobe hyperinflation. The opacities of PMF can be asymmetrical, and may mimic a neoplastic process. Hilar adenopathy with prominent eggshell [[calcification]]<ref name="pmid25260430">{{cite journal| author=Gera K, Pilaniya V, Shah A| title=Silicosis: progressive massive fibrosis with eggshell calcification. | journal=BMJ Case Rep | year= 2014 | volume= 2014 | issue=  | pages=  | pmid=25260430 | doi=10.1136/bcr-2014-206376 | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=25260430  }} </ref> is present in up to 5 percent of workers with silicosis. In rare cases, pulmonary nodules may also be calcified. Cavitation may also be present in advanced disease or in the setting of mycobacterial superinfection.
:*Bilateral consolidation,  
:*Typically symmetrical
:*Diffuse [[ground glass opacities]] which may be perihilar or basilar <ref name="pmid9805764">{{cite journal| author=Duchange L, Brichet A, Lamblin C, Tillie I, Tonnel AB, Wallaert B| title=[Acute silicosis. Clinical, radiologic, functional, and cytologic characteristics of the broncho-alveolar fluids. Observations of 6 cases]. | journal=Rev Mal Respir | year= 1998 | volume= 15 | issue= 4 | pages= 527-34 | pmid=9805764 | doi= | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=9805764  }} </ref><ref name="pmid622482">{{cite journal| author=Dee P, Suratt P, Winn W| title=The radiographic findings in acute silicosis. | journal=Radiology | year= 1978 | volume= 126 | issue= 2 | pages= 359-63 | pmid=622482 | doi=10.1148/126.2.359 | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=622482  }} </ref>.
*These features may progress from a pattern of lower zone opacities to large masses of coalesced parenchymal tissue in the mid and lower zones, which are typically bilateral but not always symmetrical <ref name="pmid9805764">{{cite journal| author=Duchange L, Brichet A, Lamblin C, Tillie I, Tonnel AB, Wallaert B| title=[Acute silicosis. Clinical, radiologic, functional, and cytologic characteristics of the broncho-alveolar fluids. Observations of 6 cases]. | journal=Rev Mal Respir | year= 1998 | volume= 15 | issue= 4 | pages= 527-34 | pmid=9805764 | doi= | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=9805764  }} </ref>.
*The typical [[chest radiograph]] finding in chronic simple silicosis is the presence of many small round opacities of  
:*Less than 10 mm in diameter,  
:*Distributed predominantly in the upper lung zones.  
*[[Progressive massive fibrosis]] also known as conglomerate silicosis occurs when these small opacities gradually enlarge and coalesce to form larger opacities  
:*Of more than 10 mm in diameter .  
:*Asymmetrical, and may mimic a [[cancer|neoplastic process]].
:*And associated with [[lung fibrosis|upper lobe fibrosis]] and lower lobe [[hyperinflation]].  
:*[[lymphadenopathy|Hilar adenopathy]] with prominent eggshell [[calcification]]<ref name="pmid25260430">{{cite journal| author=Gera K, Pilaniya V, Shah A| title=Silicosis: progressive massive fibrosis with eggshell calcification. | journal=BMJ Case Rep | year= 2014 | volume= 2014 | issue=  | pages=  | pmid=25260430 | doi=10.1136/bcr-2014-206376 | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=25260430  }} </ref> is present in up to 5 percent of workers with silicosis.  
:*[[Cavitation]] may also be present in advanced disease or in the setting of mycobacterial [[superinfection]].




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[[Category:Pulmonology]]
[[Category:Pulmonology]]
[[Category:Occupational diseases]]


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Latest revision as of 15:35, 8 June 2016

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor(s)-in-Chief: Aparna Vuppala, M.B.B.S. [2]

Overview

  • A chest radiograph is obtained in virtually all patients undergoing evaluation for silicosis. It will confirm the presence of nodules in the lungs, especially in the upper lobes.

Chest X Ray

  • These features may progress from a pattern of lower zone opacities to large masses of coalesced parenchymal tissue in the mid and lower zones, which are typically bilateral but not always symmetrical [1].
  • The typical chest radiograph finding in chronic simple silicosis is the presence of many small round opacities of
  • Less than 10 mm in diameter,
  • Distributed predominantly in the upper lung zones.
  • Progressive massive fibrosis also known as conglomerate silicosis occurs when these small opacities gradually enlarge and coalesce to form larger opacities


X Ray of the lung of a patient with silicosis

References

  1. 1.0 1.1 Duchange L, Brichet A, Lamblin C, Tillie I, Tonnel AB, Wallaert B (1998). "[Acute silicosis. Clinical, radiologic, functional, and cytologic characteristics of the broncho-alveolar fluids. Observations of 6 cases]". Rev Mal Respir. 15 (4): 527–34. PMID 9805764.
  2. Dee P, Suratt P, Winn W (1978). "The radiographic findings in acute silicosis". Radiology. 126 (2): 359–63. doi:10.1148/126.2.359. PMID 622482.
  3. Gera K, Pilaniya V, Shah A (2014). "Silicosis: progressive massive fibrosis with eggshell calcification". BMJ Case Rep. 2014. doi:10.1136/bcr-2014-206376. PMID 25260430.

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