Journal of JCIC

N-butyl-2-cyanoacrylate (NBCA) has been used successfully in the treatment of vascular embolization in adult individuals. However, few studies have reported the use of NBCA for treating aortopulmonary collateral arteries in children with congenital heart disease. We report our experience of a case in which NBCA was injected into collateral vessels to treat hemoptysis and successfully achieve hemostasis. The patient was a 2-year-old boy with pulmonary artery atresia, ventricular septal defect, and major aortopulmonary collateral arteries. At 8 months of age, he received a left Blalock–Taussig shunt; however, a thrombus postoperatively caused obstruction. At the age of 1 year and 4 months, the right-sided unifocalization and Rastelli procedures were performed. During the outpatient follow-up, the patient had massive hemoptysis at home. Given that the recanalization of collateral vessels, which were previously embolized with metal coils, caused the massive hemoptysis, additional coil embolization was difficult. Hence, we decided to embolize these vessels with NBCA. Finally, NBCA was injected into two intercostal arteries, and complete hemostasis was achieved. Furthermore, no complications were observed peri- and postoperatively. Caution is required while using NBCA for complications such as leakage in the nontarget site and catheter adhesion. However, NBCA becomes a useful embolic material to treat patients who experience recanalization of collateral vessels when it is injected during balloon occlusion and when its concentration is adjusted.