Once you know how the normal hilar structures look like on a lateral view, it is easier to detect abnormalities.
In this case on the PA-view there is hilar enlargement.
On the PA-view it is not clear whether this is due to dilated vessels or enlarged lymph nodes.
On the lateral view there are round structures in areas where you don't expect any vessels. So we can conclude that we are dealing with enlarged lymph nodes.
This patient has sarcoidosis.
Notice also the widening of the paratracheal line (or stripe) as a result of enlarged lymph nodes. #Clinical #Radiology #CXR #Sarcoidosis #Lymphadenopathy #RadiologyAssistant