Asbestosis chest x ray: Difference between revisions
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{{Asbestosis}} | |||
{{CMG}}; | {{CMG}}; {{AE}} Kim-Son H. Nguyen, M.D., M.P.A., Beth Israel Deaconess Medical Center, Harvard Medical School, Boston MA, {{CZ}} | ||
==Overview== | ==Overview== | ||
==Chest X ray== | |||
* Patients may be asymptomatic, with diagnosis made during chest x-ray (CXR) examination performed for other reasons | * Patients may be asymptomatic, with diagnosis made during chest x-ray (CXR) examination performed for other reasons | ||
* Exam often shows persistent bibasilar fine ‘’crackles’’, often at end-expiration, in one to two-thirds of patients. | * Exam often shows persistent bibasilar fine ‘’crackles’’, often at end-expiration, in one to two-thirds of patients. | ||
| Line 17: | Line 19: | ||
*:*:* Coarse parenchymal bands, often contiguous with the pleura | *:*:* Coarse parenchymal bands, often contiguous with the pleura | ||
*:*:* Honeycombing in advanced disease | *:*:* Honeycombing in advanced disease | ||
*:*:* Pleural plaques may be | *:*:* Pleural plaques may be present | ||
==References== | ==References== | ||
{{reflist|2}} | {{reflist|2}} | ||
[[Category:Pulmonology]] | [[Category:Pulmonology]] | ||
{{WikiDoc Help Menu}} | {{WikiDoc Help Menu}} | ||
{{WikiDoc Sources}} | {{WikiDoc Sources}} | ||
Latest revision as of 14:21, 8 June 2016
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Asbestosis Microchapters |
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Diagnosis |
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Treatment |
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Case Studies |
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Asbestosis chest x ray On the Web |
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American Roentgen Ray Society Images of Asbestosis chest x ray |
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Risk calculators and risk factors for Asbestosis chest x ray |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Kim-Son H. Nguyen, M.D., M.P.A., Beth Israel Deaconess Medical Center, Harvard Medical School, Boston MA, Cafer Zorkun, M.D., Ph.D. [2]
Overview
Chest X ray
- Patients may be asymptomatic, with diagnosis made during chest x-ray (CXR) examination performed for other reasons
- Exam often shows persistent bibasilar fine ‘’crackles’’, often at end-expiration, in one to two-thirds of patients.
- In advanced disease, markers of severe pulmonary dysfunction may be present, such as clubbing (32-42%), cyanosis, and cor pulmonale. Patients with cor pulmonale may show peripheral edema, jugular venous distension, hepatojugular reflux, and/or a right ventricular heave or gallop.
- Chest radiograph shows irregular linear or nodular opacities
- These are most commonly seen initially at the bases and the periphery, and they often gradually become visible in the mid and occasionally upper zones of the lung.
- If seen in conjunction with pleural plaques, the diaphragm and heart border may lose definition, giving rise to the “shaggy heart” sign.
- Hilar and mediastinal adenopathy is not typical, and suggests another process.
- Chest radiograph is about 80% sensitive for asbestosis, but chest CT is more sensitive, showing abnormalities in 30% of asbestos-exposed individuals with normal CXRs.
- HRCT typically shows:
- Basilar and dorsal lung parenchymal fibrosis, with peribronchiolar, intralobular, and interlobular septal fibrosis.
- Subpleural linear densities parallel to the pleura
- Coarse parenchymal bands, often contiguous with the pleura
- Honeycombing in advanced disease
- Pleural plaques may be present
- HRCT typically shows: