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The left main pulmonary artery (in purple) passes over the left main bronchus and is higher
main pulmonary artery ... right pulmonary artery ... Clinical #Anatomy #Radiology ... CXR #Pulmonary #Artery ... #RadiologyAssistant
Low Attenuation pattern (2) 
1. Centrilobular emphysema: low attenuation areas without walls. Notice the centrilobular artery
centrilobular artery ... #Clinical #Radiology ... Comparison #Table #RadiologyAssistant
Centrilobular emphysema due to smoking. The periphery of the lung is spared (blue arrows). Centrilobular artery
Centrilobular artery ... #Clinical #Radiology ... CentrilobularEmphysema #RadiologyAssistant
Calcifications
Detection of calcifications within the heart is quite common.
The most common are coronary artery calcifications and
common are coronary artery ... #Clinical #Radiology ... #Pericarditis #RadiologyAssistant
Bronchiectasis is defined as localized bronchial dilatation.
The diagnosis of bronchiectasis is usually based on a combination
accompanying small artery ... #Diagnosis #Radiology ... #Differential #RadiologyAssistant
Here we have a patient with atelectasis of the right upper lobe as a result of
left pulmonary artery ... arrow) #Clinical #Radiology ... Tracheal #Deviation #RadiologyAssistant
Differential diagnosis of Lymphangiomyomatosis:
Langerhans cell histiocytosis: > 90% are smokers, cysts have irregular shapes and the
centrilobular artery ... #Clinical #Radiology ... #LAM #Cystic #RadiologyAssistant
Pulmonary sequestration
This is an uncommon cause of lobar consolidation.
It is a congenital abnormality.
A nonfunctioning part of
Notice the feeding artery ... #Clinical #Radiology ... PulmonarySequestration #RadiologyAssistant
Artery-to-bronchus ratio 
Normally the vessels in the upper lobes are smaller than the accompanying bronchus with
Artery-to-bronchus ... be an increased artery-to-bronchus ... the increased artery-to-bronchus ... #Clinical #Radiology ... #Engorgement #RadiologyAssistant
There is a right lower lobe atelectasis.
Notice the abnormal right border of the heart.
The right interlobar
right interlobar artery ... right interlobar artery ... #Clinical #Radiology ... MucousPlugging #Resolution #RadiologyAssistant