CT
CTPA confirmed a nidus of pulmonary arteriovenous malformation (PAVM) in the lingular segment of the left upper lobe, measuring approximately 1.5 x 1.3 x 1.0cm (AP x W x CC). It is fed by a single enlarged branch from the pulmonary artery and drains via the left pulmonary vein into the left atrium. No evidence of pulmonary hypertension or embolism. Heart is not enlarged.
Unchanged hypodense lesion at the segment VII of the liver may represent liver cyst.
The previously seen intraluminal tracheal lesion has disappeared, indicating that this may be due to mucous plugging.