A solitary pulmonary nodule caused by Mycobacterium tuberculosis var. BCG after intravesical BCG treatment: a case report oleh Mariko Itai, Mari Yamasue, Shuichi Takikawa, Kosaku Komiya, Yukiko Takeno, Yuriko Igarashi, Yasushi Takeshita, Kazufumi Hiramatsu, Satoshi Mitarai, Jun-ichi Kadota