Recurrent superior vena caval obstruction due to invasion by malignant thymoma: treatment using a stent-graft.

A stent-graft was used to palliate superior vena caval obstruction in a 50-year-old patient with histologically proven ingrowth of malignant thymoma through three previously inserted non-covered stents. The stent-graft is still patent 12 months later. This is the first report of such a procedure where histological evidence of tumour ingrowth is available and long-term patency is verified.