Round pneumonia

Case contributed by Sepehr Haghighi
Diagnosis almost certain

Presentation

Fever and cough for 3 days.

Patient Data

Age: 3 years
Gender: Male
x-ray
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A round opacity in the left lower lobe posterior to the heart.

Lungs otherwise clear.

ct
This study is a stack
Axial
non-contrast
This study is a stack
Axial lung
window
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Air space consolidation containing air bronchograms in the posterior segment of the left lower lobe with surrounding ground glass opacification indicating round pneumonia.

Case Discussion

Round pneumonia is usually only seen in paediatric patients in whom the spread of infection is limited by incomplete development of interalveolar connections.

The retrocardiac lung is one of the areas where lesions can be overlooked due to superimposition of structures. Other important review areas are the lung apices, hilar zones and the zone below the dome of the diaphragm.

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