Retrograde Thoracic Duct Access for Embolization of Lymphatic Malformations in a Child with Congenital Heart Disease and a Plexiform Thoracic Duct Variant.

The physiologic sequelae of the atypical vasculature in patients with congenital heart disease can result in potentially fatal lymphatic complications, especially after corrective cardiac surgery. Transcatheter embolization of the thoracic duct or lymphatic collaterals can reduce morbidity and mortality in these patients. While typically performed transabdominally via an antegrade approach, retrograde embolization may be preferable in cases where this is not feasible, including in rare variants of thoracic duct anatomy. We present a case of a child with severe chylothorax after congenital cardiac surgery who was found to have thoracic lymphatic malformations and a plexiform thoracic duct variant who underwent successful embolization of the malformations.