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Pulmonary arteriovenous malformation

Case contributed by Mahmoud Ibrahim Mekhaimar
Diagnosis certain

Presentation

Hemoptysis.

Patient Data

Age: 50 years
Gender: Female

A well defined enhancing mass lesion measuring 1.3x2.5x3 cm along its maximum axial and CC dimensions respectively in the right posterior pleural recess.  This is supplied by a dilated subsegmental artery from the posterior basal segmental of the right lower lobe pulmonary artery and drained by a dilated subsegmental vein of the right inferior pulmonary vein.

Case Discussion

Pulmonary arteriovenous malformation (AVM) is an abnormal communication between the artery and vein without intervening capillary beds. They can be classified as simple, complex or diffuse. These are often unilateral. Although they can potentially affect any part of the lung, there is a recognized predilection towards the lower lobes (50-70%).

Special thanks to Prof. Youssria Yahia Sabri
Head of Thoracic Imaging Unit, Cairo University Hospitals. 

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