Approach to unequal hilum on chest X-ray

Hilum is a tricky part in chest X-ray (CXR) for understanding. Anatomically, pulmonary arteries and veins, major bronchi, and lymph nodes with pulmonary arteries contributed most of the radiographic density of the hila with superior pulmonary veins making a smaller contribution. Though both hila sho...

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Main Authors: Supriya Sarkar, Debraj Jash, Arnab Maji, Anupam Patra
Format: Article
Language:English
Published: Wolters Kluwer Medknow Publications 2013-01-01
Series:The Journal of Association of Chest Physicians
Subjects:
Online Access:http://www.jacpjournal.org/article.asp?issn=2320-8775;year=2013;volume=1;issue=2;spage=32;epage=37;aulast=Sarkar
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author Supriya Sarkar
Debraj Jash
Arnab Maji
Anupam Patra
author_facet Supriya Sarkar
Debraj Jash
Arnab Maji
Anupam Patra
author_sort Supriya Sarkar
collection DOAJ
description Hilum is a tricky part in chest X-ray (CXR) for understanding. Anatomically, pulmonary arteries and veins, major bronchi, and lymph nodes with pulmonary arteries contributed most of the radiographic density of the hila with superior pulmonary veins making a smaller contribution. Though both hila should be indistinguishable in size and density, we do not get equal hila in majority of CXRs. Rotational malpositioning must be kept in mind, while interpreting CXRs of unequal hilum. For interpreting hilum, we should search for four factors shape, radiopacity, proportionate size, absolute size, hilar angle, contour of pulmonary artery. There are numerous causes of hilar enlargement. It is the clinical presentation which will help in tapering the differential diagnosis. Asymmetric hilum is a challenging subject for pulmonologists. Interpretation of unequal hilum depends on findings of detail history, meticulous clinical examination, and appropriate investigation.
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spelling doaj.art-cd83989b85914813a96d7b6ceb2dc26a2022-12-21T18:47:35ZengWolters Kluwer Medknow PublicationsThe Journal of Association of Chest Physicians2320-87752320-90892013-01-0112323710.4103/2320-8775.123204Approach to unequal hilum on chest X-raySupriya SarkarDebraj JashArnab MajiAnupam PatraHilum is a tricky part in chest X-ray (CXR) for understanding. Anatomically, pulmonary arteries and veins, major bronchi, and lymph nodes with pulmonary arteries contributed most of the radiographic density of the hila with superior pulmonary veins making a smaller contribution. Though both hila should be indistinguishable in size and density, we do not get equal hila in majority of CXRs. Rotational malpositioning must be kept in mind, while interpreting CXRs of unequal hilum. For interpreting hilum, we should search for four factors shape, radiopacity, proportionate size, absolute size, hilar angle, contour of pulmonary artery. There are numerous causes of hilar enlargement. It is the clinical presentation which will help in tapering the differential diagnosis. Asymmetric hilum is a challenging subject for pulmonologists. Interpretation of unequal hilum depends on findings of detail history, meticulous clinical examination, and appropriate investigation.http://www.jacpjournal.org/article.asp?issn=2320-8775;year=2013;volume=1;issue=2;spage=32;epage=37;aulast=SarkarApproachchest X-rayhiluminterpretationunequal
spellingShingle Supriya Sarkar
Debraj Jash
Arnab Maji
Anupam Patra
Approach to unequal hilum on chest X-ray
The Journal of Association of Chest Physicians
Approach
chest X-ray
hilum
interpretation
unequal
title Approach to unequal hilum on chest X-ray
title_full Approach to unequal hilum on chest X-ray
title_fullStr Approach to unequal hilum on chest X-ray
title_full_unstemmed Approach to unequal hilum on chest X-ray
title_short Approach to unequal hilum on chest X-ray
title_sort approach to unequal hilum on chest x ray
topic Approach
chest X-ray
hilum
interpretation
unequal
url http://www.jacpjournal.org/article.asp?issn=2320-8775;year=2013;volume=1;issue=2;spage=32;epage=37;aulast=Sarkar
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