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Featured researches published by Y. Tsuji.


Diseases of The Colon & Rectum | 2009

Long-term results of intersphincteric resection for low rectal cancer.

Kazutaka Yamada; Shunji Ogata; Yasumitsu Saiki; Mitsuko Fukunaga; Y. Tsuji; Masahiro Takano

PURPOSE: Intersphincteric resection has been performed as an alternative to abdominoperineal resection for low rectal cancer. The purpose of this study was to assess the long-term results after intersphincteric resection in terms of the morbidity, oncologic safety, and defecatory function. METHODS: Between 1994 and 2006, 107 consecutive patients with low rectal cancer had curative intersphincteric resection, categorized as total, subtotal, or partial resection of the internal anal sphincter. RESULTS: There were no mortalities. Neorectal mucosal prolapse in patients with total intersphincteric resection and coloanal anastomotic stenosis in patients with subtotal or partial intersphincteric resection were observed as characteristic late complications. The five-year disease-free survival rates classified according to the TNM stage were 100 percent for stage I, 83.5 percent for stage II, and 72.0 percent for stage III cases. The five-year cumulative local recurrence rate after intersphincteric resection was 2.5 percent. Defecatory function, which was evaluated by bowel movement in a 24-hour period, and continence after intersphincteric resection were objectively good. The results of the multivariate analysis revealed that age was the only factor associated with a risk of fecal incontinence. CONCLUSION: Provided strict selection criteria are used, intersphincteric resection may be the optimal sphincter-preserving surgery for low rectal cancer.


Jpn J Gastroenterol Surg, Nihon Shokaki Geka Gakkai zasshi | 1992

Clinicopathological Studies and Treatment of 17 Cases of Flat Elevation with Central Depression Type Early Colorectal Cancer.

Manabu Fujiyoshi; Masahiro Takano; Tateshi Fujiyoshi; Koichi Takagi; Y. Tsuji; Akira Hamada; Toshiharu Sasaki

過去7年間に早期大腸癌324例を経験し, 表面隆起陥凹型は17例5.2%であった.今回, これら表面隆起陥凹型と診断した早期大腸癌の臨床病理学的特徴と治療方針について検討した.これらの中には粘膜内癌と粘膜下浸潤癌が存在したが, その違いを肉眼形態に着目すると, 中心に明らかな潰瘍を有する隆起潰瘍型と, 周囲の隆起部と隆凹部の肉眼的性状が同じ隆起陥凹型に分類可能であった.隆起潰瘍型の8例はすべて粘膜下浸潤癌で脈管侵襲, リンパ節転移, 肝転移が高頻度であった.一方, 隆起陥凹型を9例に認め, うち粘膜内癌7例, 粘膜下浸潤癌2例であった.したがって表面隆起陥凹型を2亜型に分類することは臨床的に有意義であり, 隆起潰瘍型はリンパ節や肝転移の高危険群として取扱われるべきであるが, 隆起陥凹型には粘膜内癌が存在することも念頭におき, 治療に当たることが重要と考えられた.


Nippon Daicho Komonbyo Gakkai Zasshi | 1991

Clinical Analysis of 100 Cases of Cryptitis

Masahiro Takano; T. Fujiyoshi; M. Fujiyoshi; M. Kawano; M. Hashimoto; Y. Tsuji; A. Hamada; N. Fujimoto

肛門小窩炎は肛門小窩に炎症を生じる疾患である.われわれは,最近経験した本症例100例の臨床症状,診断,治療についての分析を行った.男女差は少なく,年齢では40~50歳代にピークがあり,病悩期間は数日から6年間と広く分布していた.主症状は疼痛で,体動に関係が有るものと無いものがある,部位は左右に現れるものが最も多く,多くは複数の形をとり4個が最も多い.しばしば骨盤内,あるいは大腸のさほど器質的変化を伴わない疾患と合併している.逆に,近似した疾患であるとされている肛囲膿瘍・痔瘻や,隣接して合併するとされている肛門乳頭炎などとは相関関係はないと考えられる.治療は薬物療法・硬化療法・crypt切開術・crypt切除術・cryosurgeryなどを段階的に行い,治癒したもの41例,以前より改善したもの24例,再発したもの35例という結果を得ている.


Nippon Daicho Komonbyo Gakkai Zasshi | 1998

Usefulness of Sigmoidoscopy in Predicting Disease of the Deeper Colon

Y. Tsuji; Masahiro Takano; R. Nozaki


Nippon Daicho Komonbyo Gakkai Zasshi | 1993

Study of the Surgical Techniques for Anal Fistula due to Anal Manometry

Y. Tsuji; Masahiro Takano; T. Fujiyoshi; M. Kawano


Nippon Daicho Komonbyo Gakkai Zasshi | 1992

Study on the Bacterial Culture of Perianal Abscess

Y. Tsuji; T. Fujiyoshi; M. Kawano; M. Fujiyoshi; M. Hashimoto; N. Fujimoto; T. Sasaki; T. Maekawa; T. Yoshida; K. Eto; Masahiro Takano


Nippon Daicho Komonbyo Gakkai Zasshi | 1992

Comparison of the Correct Diagnosis of Anal Fistulas Between Digital and Ultrasonic Examination

Masahiro Takano; T. Fujiyoshi; K. Takagi; M. Kawano; M. Fujiyoshi; Y. Tsuji; M. Hashimoto; N. Fujimoto; T. Sasaki; T. Maekawa; T. Yoshida


Nippon Daicho Komonbyo Gakkai Zasshi | 1999

Examination of Postoperative Pain of Hemorrhoids

Y. Tsuji; Masahiro Takano; J. Kuromizu


Nippon Daicho Komonbyo Gakkai Zasshi | 1996

Diagnosis of Irritable Bowel Syndrome (IBS) by Roentgenographical Configuration

Masahiro Takano; A. Shimada; Y. Tsuji; R. Nozaki; K. Udo


Nippon Daicho Komonbyo Gakkai Zasshi | 1991

Study on the Pathogenesis of Pelvirectal Abscess and Fistula Viewed from the Standpoint of Transanal Ultrasonic Examination

Y. Tsuji; T. Fujiyoshi; M. Fujiyoshi; M. Kawano; M. Hashimoto; A. Hamada; N. Fujimoto; T. Sasaki; Masahiro Takano

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Masahiro Takano

University of the Ryukyus

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Koichi Takagi

University of the Ryukyus

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Yoshihiro Muto

University of the Ryukyus

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