Recognition and pathological features of periampullary region adenocarcinoma with an indeterminable origin oleh Ryuji Komine, Motohiro Kojima, Genichiro Ishi, Masashi Kudo, Motokazu Sugimoto, Shin Kobayashi, Shinichiro Takahashi, Masaru Konishi, Tatsushi Kobayashi, Tetsuo Akimoto, Ayumi Murakami, Motoko Sasaki, Mariko Tanaka, Akiko Matsuzaki, Nobuyuki Ohike, Katsunori Uchida, Tomoko Sugiyama, Kenichi Hirabayashi, Takuma Tajiri, Kazuyuki Ishida, Keita Kai, Yuko Omori, Kenji Notohara, Hiroshi Yamaguchi, Yoko Matsuda, Yoshiki Naito, Yuki Fukumura, Yoshihiro Hamada, Yumi Mihara, Yohei Masugi, Naoto Gotohda, Kenichi Harada, Noriyoshi Fukushima, Toru Furukawa