Mixed‐type primary germ cell tumor of the mediastinum in a young adult male with a sudden life threatening condition: A case report. - Sakane, Tadashi; Okuda, Katsuhiro; Murase, Takayuki; Watanabe, Takuya; Oda, Risa; Tatematsu, Tsutomu; Yokota, Keisuke; Haneda, Hiroshi; Inagaki, Hiroshi; Nakanishi, Ryoichi (Thoracic Cancer, 2020)