Cardiovascular images. Chylotamponade: an unusual manifestation of Gorham-Stout syndrome.

Gorham-Stout syndrome is a rare disorder that leads to extensive lymphangiomatosis in bones with resorption of adjacent bone matrix. As a result, the disease is also known as massive osteolysis or “vanishing bone disease.” Although the disease primarily occurs in bone, it may also involve adjacent soft tissues. We report a case of Gorham-Stout syndrome presented with chylotamponade as a result of extensive intrathoracic lymphatic hyperproliferation.