Giant right pulmonary artery aneurysm in a systemic-to-pulmonary artery shunt.

Aneurysms of the pulmonary arteries and trunk are rare entities. The Waterston shunt is a palliative procedure for children with cyanotic CHD due to obstruction of the pulmonary outflow. Described complications are distortion of the pulmonary artery and pulmonary arterial hypertension. We report a patient with a giant right pulmonary artery aneurysm in relation to a Waterston shunt.