Results: In 150 patients with female / male is 82/68, common clinical symptoms include chest pain (61.3%), prolonged dry cough (28.7%) addition to the large proportion also incidentally detection (14.7%), in mediastinal tumors the tumor of thymus have the highest rates accounting for 33.33%; followed by neuroma 22%; germ cell tumors 17.33%; accounting for benign cyst 14.67%.