S. Agawa
University of Tokyo
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Featured researches published by S. Agawa.
Diseases of The Colon & Rectum | 1985
Tetsuichiro Muto; Junjiro Kamiya; Toshio Sawada; Fumio Konishi; Kenichi Sugihara; Yoshiro Kubota; Miki Adachi; S. Agawa; Yukio Saito; Yasuhiko Morioka; T. Tanprayoon
Thirty-three small “flat adenomas,” not more than 1 cm in diameter, were collected from surgically and colonoscopically removed specimens, and their colonoscopic and histologic characteristics were described. There were 14 adenomas with mild atypia, five with moderate atypia, 14 with severe atypia (or focal carcinoma limited to the mucosa). The grade of atypia seems to increase with the size of lesions, and these lesions were assumed to play an important role in the adenoma-carcinoma sequence. The importance of recognizing the presence of these small “flat adenomas” in everyday practice is stressed.
Diseases of The Colon & Rectum | 1988
S. Agawa; Tetsuichiro Muto; Yasuhiko Morioka
Twenty cases of resected specimens of carcinoma and/or dysplasia complicating ulcerative colitis were histochemically investigated by the periodic acid-thionin Schiff/potassium hydroxide/periodic acid-Schiff (PAT/KOH/PAS) staining method to see mucin characteristics of carcinoma, dysplasia, and the background mucosa of these lesions. As a control, 11 resected specimens of ulcerative colitis without dysplastic changes and 26 specimens of colonic carcinoma were examined also. All dysplasia and carcinoma in ulcerative colitis stained blue, whereas normal colonic mucin stained red in 65 percent. In 14 of 20 specimens with carcinoma and/or dysplasia, the background mucosa appeared normal with hematoxylin and eosin staining, but showed a mosaic staining pattern with PAT/KOH/PAS. However, only two of 11 specimens of ulcerative colitis without dysplasia and none of 26 specimens of flat mucosa with colorectal carcinoma showed a mosaic staining pattern. From these observations it was concluded that the PAT/KOH/PAS staining method could be useful as a histochemical marker of premalignant change in longstanding ulcerative colitis.
Gastroenterologia Japonica | 1992
Setsuo Hirohashi; Y. Suzuki; H. Ishizuka; Hideki Morimoto; Takesada Mori; Yuji Hinoda; Kohzoh Imai; Kentaro Sugano; Tadataka Yamada; Hideki Yano; Yutaka Seino; Hideyuki Fusamoto; Norio Hayashi; Yoshiharu Chijiiwa; Tadashi Misawa; Masahiko Nakamura; Masaya Oda; Hiroshi Inagaki; Jiro Yura; Kazuro Itoh; Tetsuo Murakami; Tooru Shimosegawa; Masaru Koizumi; Noboru Yanaihara; Takayoshi Toyota; Akiyoshi Mizumoto; Naoyuki Yoshida; Zen Itoh; Shinya Kishimoto; Akima Miyoshi
M E E T I N G OF T H E J A P A N E S E S O C I E T Y OF G A S T R O E N T E R O L O G Y March 28-30, 1991-Tokyo, Japan Chairman: Yutaka MATSUO, M.D.
Diseases of The Colon & Rectum | 1985
Tetsuichiro Muto; Junjiro Kamiya; Toshio Sawada; S. Agawa; Yasuhiko Morioka
Nippon Daicho Komonbyo Gakkai Zasshi | 1986
Yoshiro Kubota; Tetsuichiro Muto; Toshio Sawada; Fumio Konishi; S. Agawa; Yasuhiko Morioka; S. Itoyama
Nippon Daicho Komonbyo Gakkai Zasshi | 1986
H. Yasuhara; S. Agawa; Yoshiro Kubota; Toshio Sawada; Fumio Konishi; Tetsuichiro Muto; Yasuhiko Morioka
Nippon Daicho Komonbyo Gakkai Zasshi | 1984
S. Agawa; Toshio Sawada; Tetsuichiro Muto; Yasuhiko Morioka
Nippon Daicho Komonbyo Gakkai Zasshi | 1990
Kimitaka Suzuki; S. Agawa; Tetsuichiro Muto
Nippon Daicho Komonbyo Gakkai Zasshi | 1988
Tetsuichiro Muto; Junjiro Kamiya; Kenichi Sugihara; Yoshiro Kubota; S. Adachi; S. Agawa; Yukio Saito; Yasuhiko Morioka; Toshio Sawada; T. Konishi
Nippon Daicho Komonbyo Gakkai Zasshi | 1987
Tetsuichiro Muto; M. Ooya; S. Agawa; Kenichi Sugihara; K. Sunouchi; Yasuhiko Morioka
