Presentation
Chest pain and shortness of breath; Right lung nodule on chest X-ray.
Patient Data
Well defined non-calcified nodule at the anterior segment of right upper lobe with a single feeding arterial branch derived from the right upper lobe pulmonary artery and a single draining vein seen merging with the right superior pulmonary vein (pulmonary AVM - simple type).
Incidentally aberrant right subclavian artery and enlarged thyroid gland.
Case Discussion
Pulmonary AVM is a common cause of solitary pulmonary nodule (coin lesion).
Multiple pulmonary AVMs should raise the possibility of hereditary hemorrhagic telangiectasia.
Contrast-enhanced CT is the diagnostic modality of choice.