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Posterior junction line

Case contributed by Derek Smith
Diagnosis not applicable

Presentation

Imaged in investigation for chest pain.

Patient Data

Age: 45 years
Gender: Female
x-ray

The lungs are clear, with no pneumothorax or pleural fluid. Normal cardiomediastinal contours with normal pulmonary vascularity. 

Good example of posterior junction line. 

Annotated image

Yellow arrows point to the posterior junction line.

Case Discussion

Posterior junction line is a normal finding, with opposition of the posteromedial pleural surfaces of each lung. Usually positioned just left of midline over T3-T5. 

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