Development of systemic-to-pulmonary collateral arteries in a patient with hypoplastic left cardiac syndrome after bilateral pulmonary artery banding.

We describe systemic-to-pulmonary collateral arteries that developed after bilateral pulmonary artery banding in a patient with hypoplastic left cardiac syndrome. The growth of collateral arteries should be evaluated carefully because bilateral pulmonary artery banding under prostaglandin E1 administration is considered an initial palliative option.