Flat waist sign
Last revised by Craig Hacking on 13 Feb 2019
Citation, DOI, disclosures and article data
Citation:
Maller V, Hacking C, Knipe H, Flat waist sign. Reference article, Radiopaedia.org (Accessed on 06 Oct 2024) https://doi.org/10.53347/rID-4898
Permalink:
rID:
4898
Article created:
31 Oct 2008,
Vinod G Maller
Disclosures:
At the time the article was created Vinod G Maller had no recorded disclosures.
View Vinod G Maller's current disclosures
Last revised:
13 Feb 2019,
Craig Hacking ◉
Disclosures:
At the time the article was last revised Craig Hacking had no recorded disclosures.
View Craig Hacking's current disclosures
Revisions:
3 times, by
2 contributors -
see full revision history and disclosures
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The flat waist sign refers to flattening of the left heart border, specifically the contours of the aortic arch and adjacent pulmonary trunk. It is seen in severe left lower lobe collapse and is caused by leftward displacement and rotation of the heart.
It is different to the straight left heart border sign on CXR seen in hemopericardium secondary to penetrating chest trauma.
References
- 1. W. Richard Webb, Charles B. Higgins. Thoracic Imaging. (2010) ISBN: 9781605479767
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