[A case of thyroid cancer invading into mediastinum that was in need of resection of both innominate veins for complete cure].

This case report describes a 59-year-old female patient with superior vena cava syndrome due to large thyroid cancer involving both innominate veins and left common carotid artery. The tumor was resected together with the both innominate veins and left common carotid artery. Right innominate veins and left common carotid artery were reconstructed with FEP-Ringed grafts. Microscopical finding was papillary carcinoma and its lymph node metastasis. Postoperative course was uneventful relatively. Three years after operation the patient is good health without any sign of recurrence.