Abstract
A 59-year-old male with a complaint of hoarseness was referred to our hospital. Chest CT demonstrated a tumor located between the aorta and left main bronchus. The serum CEA level was 37.5 ng/ml. Mediastinal lymph node metastasis was suspected, however, primary lesion was not detected. The patient underwent surgery to establish a definite diagnosis. The tumor was located in the subaortic region, which invaded to the left recurrent nerve, aorta, left pulmonary artery, and left main bronchus. Incisional biopsy was performed and histological examination revealed poorly differentiated adenocarcinoma. The patient received 66 Gy of irradiation to the tumor. The serum CEA level returned to normal after irradiation. This is a rare case of idiopathic carcinoma of the mediastinal lymph node.
