Correct!
4. Pulmonary AVM
Within the posterior left lung adjacent to the spine there is a vascular lesion that has a feeding artery and a draining vein, compatible with an AVM. None of the other answers explain these findings. Contrast enhanced CT demonstrates that this abnormality is a vascular lesion, and not a nodule/mass. Biopsy of such a lesion could result in catastrophic bleeding. Administration of intravenous contrast can be very helpful when evaluating a pulmonary lesion which could be vascular in nature.
The patient was referred to interventional radiology for embolization of the pulmonary AVM.
What is the embolization agent of choice used for AVM embolotherapy? (Click on the correct answer to proceed to the fourth of five panels)