Cavo-atrial junction (chest x-ray)

Case contributed by Henry Knipe
Diagnosis not applicable

Patient Data

Gender: Female
Annotated image

Normal chest x-ray demonstrating different methods of estimating the position of the cavo-atrial junction:

  • yellow arrow: two vertebral body levels below the level of the carina
  • blue arrow: intersection of bronchus intermedius with superior right heart border
  • red arrow: intersection of the superior right heart border with SVC contour

Case Discussion

There are a few methods of estimating the location of the cavo-atrial junction on chest x-ray and they are mostly congruent to a discrete region. 

Original image courtesy of Dr Usman Bashir, (original file here). Creative Commons BY-SA-NC. Annotations: arrows added. 

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