Chemotherapy with carboplatin and paclitaxel after failure of primary chemotherapy for advanced thymic carcinoma. A report of three cases and review of the literature - keisuke watanabe, masaharu shinkai, hideto goto, sumiko yoshikawa, nobuhiro yamaguchi, yuu hara, masahiro shinoda, yusuke moriyama, bruce K rubin, yoshiaki ishigatsubo, takeshi kaneko, 2013