Postoperative mediastinal chyloma.

Anterior mediastinal mass developed in a 69-year-old woman who had undergone right upper lobectomy and systematic lymph node dissection. The mass was diagnosed to be a mediastinal chyloma and surgical intervention was necessary to resolve the compression to the superior vena cava. Although posttraumatic mediastinal chyloma is not rare, postoperative mediastinal chyloma has not been reported in the literature. However, it should be noted as a differential diagnosis for a postoperative mediastinal mass.