Pneumonia with hilum overlay sign

Case contributed by Dr Ibrahim Alsheikh Deeb


Cough and fever

Patient Data

Age: 19 years
Gender: Male


There is an opacity projecting in the right hilar/perihilar region with preserved hilar contour, indicating that the abnormality is not arising from the hilum. It can be located either anterior or posterior to the hilum.

Few nodular opacities are seen lateral to the forementioned opacity.


CT chest on same day

Contrast-enhanced CT scan of the chest performed on the same day shows consolidation in the anteromedial aspect of the right upper lobe with surrounding patchy air space disease, consistent with pneumonia.


Follow up CT scan

Follow up CT scan after treatment showed resolution of pneumonia.

Case Discussion

Hilum overlay sign is the ability to see the normal hilar outline through opacities projecting over the hilum, excluding pathologies being of hilar origin or involving the hilum.

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Case information

rID: 75608
Published: 5th Apr 2020
Last edited: 5th Apr 2020
System: Chest
Inclusion in quiz mode: Included
Institution: American University of Beirut Medical Center

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