Complicated chylous pericardial and thoracic effusion as the first clinical manifestation of thoracic lymphatic malformation.

Lymphatic malformations are benign focal proliferations of lymphatic vessels with a congenital origin. We present a case of an 18-year-old patient with post-traumatic chylopericardium and recurrent left-sided chylothorax, who was unresponsive to a variety of therapeutic measures until he was diagnosed with a complicated thoracic lymphatic malformation.