[A case of lung cancer with mediastinal tumor].

A 72-year-old female underwent surgical resection of lung cancer and mediastinal tumor. Abnormal shadows on the chest roentgenogram were incidentally detected by the regular health screening. The lung cancer existed in the left upper lobe, and the mediastinal tumor existed in the posterior mediastinum along left side of the spines. Serum CEA level was 299 ng/ml by enzyme immunoassay method. We judged the lung cancer as being in Stage I (T2 N0 M0), and the mediastinal tumor as benign neurogenic tumor unrelated to the lung cancer through detailed examination. Surgical resection of both tumors was performed through left thoracotomy, and the surgical procedure was curative operation. Pathological examination revealed the lung cancer was moderately differentiated adenocarcinoma and the mediastinal tumor was Schwannoma. Eight months after surgery, serum CEA level is 1.1 ng/ml without evidence of recurrence. This experience suggested us that a mediastinal tumor accompanied by lung cancer is not necessarily metastatic tumor, and that curative operation may be possible in these cases.