Cardiac incisura
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On the right side of the chest the lung will lie against the anterior chest wall.
On the left however the inferior part of the lung may not reach the anterior chest wall, since the heart or pericardial fat or effusion is situated there.
This causes a density on the anteroinferior side on the lateral view which can have many forms.
It is a normal finding, which can be seen on many chest x-rays and should not be mistaken for pathology in the lingula or middle lobe. #Clinical #Radiology #CXR #Lateral #Cardiac #Incisura #RadiologyAssistant