Superior vena cava replacement in thymic tumours treated with radio-chemotherapy.

From 1987 to 2000 108 patients were operated on for thymic tumours. Two of these underwent replacement of the superior vena cava with polytetrafluoroethylene prostheses because the tumours invaded the superior vena cava. One of these was affected by myasthenia gravis, and was treated preoperatively with concurrent radio-chemotherapy and lymphocytopheresis. The other received preoperative chemotherapy and post-operative radio-chemotherapy because of minimal residual disease. The clinical courses of the two patients are reported here and we conclude that eradication of thymic malignancies is suitable even when superior vena cava replacement is required, and that neither antimyasthenic therapy nor adjuvant and/or neoadjuvant treatment interfere with aggressive surgical management or vice versa. Moreover, the long-term survival of one of these patients despite relapse of disease shows that extended surgery is indicated in these cases.