A tumor was detected at the tracheal carina to the orifice of the left main bronchus in a 66-year-old man who had undergone a left upper lobectomy for lung cancer five years before and was diagnosed as a squamous cell carcinoma. Carinal resection and reconstruction was performed because of the tumor relapse after the treatment by argon plasma coagulator. Carinal resection was performed under the median sternotomy with reconstruction by the montage method. The patient was discharged on the 8th postoperative day without any postoperative complications.