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Publication
Featured researches published by Osamu Tsutsumi.
Case Reports in Gastroenterology | 2013
Yasuharu Mori; Kazunari Akagi; Masaaki Yano; Hiroshi Sashiyama; Osamu Tsutsumi; Yukihiro Hamahata; Yasunobu Tsujinaka; Akihiko Tsuchida; Jun Matsubayashi
A 70-year-old female underwent follow-up colonoscopy after colonic polypectomy. The colonoscopy revealed the presence of a 7-mm submucosal tumor in the sigmoid colon. The tumor surface was smooth and covered with normal mucosa. It was diagnosed as a submucosal tumor, and polypectomy was performed. Histopathological examination of the resected specimen revealed moderately to poorly differentiated adenocarcinoma measuring 2 × 5 × 3 mm with marked peritumoral lymphocytic infiltration and lymphoid follicle formation. It was diagnosed as carcinoma with lymphoid stroma (lymphoepithelioma-like carcinoma), SM (1,800 μm), ly2, v0, budding; grade 1. We confirmed the indication for noncurative additional surgical resection and performed laparoscopic sigmoid colectomy. No metastases were observed in the dissected lymph nodes.
Nihon Rinsho Geka Gakkai Zasshi (journal of Japan Surgical Association) | 2002
Hiroshi Tanizaki; Noriaki Kawano; Hidejiro Watanabe; Osamu Tsutsumi; Kazuhiko Hatate; Takao Sugai
Pediatric Dermatology | 2013
Keiko Kudo; Kazumasa Oohashi; Hiroshi Sashiyama; Kazunari Akagi; Osamu Tsutsumi; Yukihiro Hamahata; Yasunobu Tsujinaka; Yoshinari Naito; Toru Shimizu; Kunio Mizuguchi; Takashi Yao
Nippon Daicho Komonbyo Gakkai Zasshi | 2013
Masaaki Yano; Yukihiro Hamahata; Takashi Koike; Hiroshi Sashiyama; Osamu Tsutsumi; Yasunobu Tsujinaka
Nippon Daicho Komonbyo Gakkai Zasshi | 2010
Kazunari Akagi; Yasunobu Tsujinaka; Yukihiro Hamahata; Osamu Tsutsumi; Hiroshi Sashiyama; Toshihiko Hoshino
Nippon Daicho Komonbyo Gakkai Zasshi | 2010
Hiroshi Sashiyama; Yasunobu Tsujinaka; Yukihiro Hamahata; Keigo Matsuo; Osamu Tsutsumi; Yasuo Nakajima; Yasuo Takase; Kazunari Akagi; Takehiro Arai; Toshihiko Hoshino; Yukiko Minami; Yoshiyuki Tsunoda; Daisuke Kitayama
Nippon Daicho Komonbyo Gakkai Zasshi | 2013
Hiroshi Sashiyama; Yasunobu Tsujinaka; Yukihiro Hamahata; Osamu Tsutsumi; Toshihiko Hoshino; Masaaki Yano; Takashi Koike; Jun-ichi Kuramochi; Takashi Tsubomoto; Toru Shimizu; Takashi Yao
Nippon Daicho Komonbyo Gakkai Zasshi | 2011
Hiroshi Sashiyama; Yasunobu Tsujinaka; Yukihiro Hamahata; Osamu Tsutsumi; Toshihiko Hoshino; Masaaki Yano; Koji Tanaka; Keigo Matsuo; Yasuo Nakajima; Takehiro Arai; Daisuke Kitayama; Yasuo Takase; Kazunari Akagi
Nippon Daicho Komonbyo Gakkai Zasshi | 2011
Kazunari Akagi; Yasunobu Tsujinaka; Yukihiro Hamahata; Osamu Tsutsumi; Hiroshi Sashiyama; Toshihiko Hoshino
Nihon Rinsho Geka Gakkai Zasshi (journal of Japan Surgical Association) | 2010
Hiroshi Sashiyama; Yukihiro Hamahata; Osamu Tsutsumi; Toshihiko Hoshino; Yasunobu Tsujinaka
