Mediastinal Solitary Fibrous Tumor: Report of a Case with Direct Invasion to the Trachea - Shiraishi, T; Hirayama, S; Hiratsuka, M; Iwasaki, A; Makimoto, Y; Iwasaki, H; Kawahara, K; Shirakusa, T (The Thoracic and Cardiovascular Surgeon, 2004)