Gorham disease, also known as massive osteolysis, is characterized by unregulated proliferation of lymphatic or vascular capillaries within bone, resulting in destruction and replacement with angiomatous tissue. This disease can lead to chylothorax that can be lethal. Viscum album extract from European mistletoe is a complementary anti-cancer drug which is commonly prescribed in many European countries and is considered as a new generation of chemical agent for pleurodesis. A 14-year-old girl presented with dyspnea and chest pain. She was diagnosed as Gorham disease who was definitively treated with V. album extract for chylothorax that was refractory to standard conservative management.