Challenge: Anatomically, where is the abnormality in this PA CXR?
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Wednesday, March 10, 2010
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I put together these medical challenges. The cases are hypothetical and do not necessarily represent actual or typical presentations of medical diseases. Disclaimer is at the bottom of this page.
4 comments:
The right heart border looks obscured. The transverse fissure is kind of difficult to make out (at least for me), but I'll still vote for right middle lobe anyways because of the silhouette sign.
Lower Lobe of the Right Lung.. Look for Cardiac silhouette which is seen if the pathology is in the right middle lobe.. Here, the right cardiac border seems to merge with the homogenous opacity in the right lower lung field, suggesting that the abnormality lies more anteriorly in the right lower lung field i.e. in the right lower lobe..
:)
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Black and White
This is the silhouette sign; the right heart border is obscured by a lung opacity. Anatomically, this corresponds to a right middle lobe abnormality. The opacity also has a straight upper border suggesting margination along the horizontal fissure.
Sources: UpToDate; radpod.org.
damn! i switched middle and lower lobe! ugh!
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