“…Known specifi c causes include congenital mediastinal lymphangiectasia (cystic hygroma) (5), gastric carcinoma (6, 7), lymphangiomatosis of the chest/ Gorham syndrome (8,9), primary mediastinal neoplasms such as lymphoma and germ cell tumor (6, 10), mediastinal hamartoma (8), infection with tuberculosis (11), deep vein thrombosis with superior vena cava syndrome (12), pancreatitis (13), allergic alveolitis (14), and Behçet's disease (15). A review in 1935 identifi ed only three cases of chylopericardium (12), and a more comprehensive review in 2006 identifi ed 33 reported cases, the most common etiology being idiopathic (3).…”