Figure 3.

(a) Non-contrast CT chest showing a well-circumscribed serpiginous mass in the right lower lobe of the lung (b) Contrast CT chest showing contrast enhancement of the serpiginous mass (c) CT pulmonary angiogram showing large AV malformation arising from the right descending pulmonary artery, drained by an enlarged tributary of the pulmonary vein (d) CT pulmonary angiogram showing large AV malformation arising from the right descending pulmonary artery, drained by an enlarged tributary of the pulmonary vein