Eiichi Yabata
Tokyo Medical and Dental University
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Publication
Featured researches published by Eiichi Yabata.
Journal of Rural Medicine | 2014
Eiichi Yabata; Masaru Udagawa; Hiroyuki Okamoto
Objectives: The staging system of the International Union Against Cancer considers tumor deposits to be N1c in patients with no regional lymph node metastasis, but the significance of tumor deposits in patients with regional lymph node metastases is unclear. We investigated the effect of tumor deposits on overall survival in colorectal cancer patients with regional lymph node metastases. Patients and Methods: From 2000 to 2008, 551 patients underwent resections for colorectal cancer at our medical center. We excluded 87 patients who had distant metastases or had received neoadjuvant chemotherapy or radiotherapy from our study and statistically analyzed the remaining 464 patients. Results: Stepwise multivariate Cox proportional hazards analysis in patients with regional lymph node metastases showed only tumor deposits to be significant for overall survival (hazard ratio: 2.813; P = 0.0002). Recurrence was seen in 49.2% of patients with tumor deposits (30/61) compared with 14.4% of patients without them (58/403; P < 0.0001). Tumor deposits did not show the same effect on overall survival as lymph node metastases. Conclusions: Tumor deposits were significantly associated with poorer overall survival in colorectal cancer patients with regional lymph node metastases. The effect of tumor deposits on overall survival was between that of lymph node metastasis and distant metastasis.
Journal of medical and dental sciences | 1997
Eiichi Yabata; Satoshi Okabe
Jpn J Gastroenterol Surg, Nihon Shokaki Geka Gakkai zasshi | 1994
Masanori Tada; Tetsujin Kure; Masaaki Kanemobu; Masahiro Tsubaki; Eiichi Yabata; Satoshi Okabe
The Japanese Journal of Gastroenterological Surgery | 2010
Eriko Katsuta; Toukichi Gen; Masaru Udagawa; Hiroyuki Okamoto; Yuichirou Watanabe; Eiichi Yabata
Jpn J Gastroenterol Surg, Nihon Shokaki Geka Gakkai zasshi | 2001
Atsushi Kudo; Tuneo Kawasaki; Masatoshi Jibiki; Seitaku Hayashi; Toukichi Gen; Eiichi Yabata; Masanori Kikuchi; Kenichi Teramoto; Shigeki Arii; Takehisa Iwai
Journal of The Japanese Association of Rural Medicine | 2010
Sayaka Watanabe; Eiichi Yabata; Haruko Ito; Masako Tsurumi; Mieko Suzuki; Rie Sakurai; Naoko Koda; Naoe Amagai; Toshihiko Hukuoka; Hiroyuki Okamoto
Nihon Rinsho Geka Gakkai Zasshi (journal of Japan Surgical Association) | 2004
Toukichi Gen; Eiichi Yabata; Seitaku Hayashi; Katsunori Ami; Hiroyuki Okamoto; Sho Otsuki
Nihon Rinsho Geka Gakkai Zasshi (journal of Japan Surgical Association) | 2004
Tokichi Gen; Eiichi Yabata; Seitaku Hayashi; Katsunori Ami; Hiroyuki Okamoto; Sho Otsuki
Progress of Digestive Endoscopy(1972) | 1998
Kazuo Ogiya; Tsuneo Kawasaki; Tomotaka Kaisan; Yuzuru Hara; Toukichi Gen; Eiichi Yabata; Masanori Kikuchi; Kazumi Sato
Progress of Digestive Endoscopy(1972) | 1997
Tomotaka Kaisan; Tsuneo Kawasaki; Masaru Udagawa; Yuzuru Hara; Toukichi Gen; Eiichi Yabata; Masanori Kikuchi