En bloc resection of an extremely giant mediastinal immature teratoma with somatic-type malignancy: A case report with a brief review of the literatureKai-li Huang, MD1#, Pengfei Li, MD1#, Han-Yu Deng, MD1, Xiaojun Tang1, Qinghua Zhou, MD1*1Lung cancer center, West China Hospital, Sichuan University, Chengdu 610041, China*Correspondence to: Qinghua Zhou. Lung Cancer Center, West China Hospital of Sichuan University, No.37 Guoxue Alley, Chengdu 610041, China. Email: [email protected]#These authors contributed equally to the study and were co-first authors.Conflicts of interest: The authors declare no competing interests.Word count: 3717