Kaya S, Pur Yigit L, Erelel M, Toker A, . Expectoration of a tumor tissue: metastatic endobronchial leiomyosarcoma treated with endoscopy. Curr Thorac Surg. 2016;  1(1):  032-034. http://dx.doi.org/10.26663/cts.2016.0007