Images in Radiology - Endovascular glue embolisation of Intercostal Arteriovenous fistula: A non surgical treatment option

14-year-old boy presented with a progressively growing swelling in the right infrascapular region. The patient had undergone a pleural tapping six months back. Plain and contrast enhanced CT Scan showed enhancing serpiginous channels in the intercostal space suggestive of an intercostal vascular malformation. Digital substraction angiogram (DSA) performed through the right transfemoral route showed hypertrophied right 8^th intercostal artery with a large muscular branch opening into a large venous pouch of fistula (Figure 1A). This ultimately drained via multiple veins into the dilated intercostal veins, azygous and paraspinal veins (Figure 1B). T7,T9, T10 intercostal arteries on the right side were normal.