Toshikazu Watanabe
Nihon University
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Featured researches published by Toshikazu Watanabe.
Digestion | 2008
Ryu Nishiyama; Noriko Nakajima; Akifumi Ogihara; Souichirou Oota; Shun Kobayashi; Kiyoshi Yokoyama; Masahiko Oonishi; Shunpachi Miyamoto; Yuuichi Akai; Toshikazu Watanabe; Akitake Uno; Shigeaki Mizuno; Takeshi Ootani; Naohide Tanaka; Mituhiko Moriyama
Background/Aims: Schönlein-Henoch purpura (SHP) is a systemic condition characterized by purpura associated with leukocytoclastic vasculitis. SHP diagnosis is more difficult in infrequent cases where gastrointestinal (GI) symptoms precede purpura. This report examines 11 cases of SHP at our hospital with specific regard to the incidences and details of GI symptoms. Methods: The clinical manifestations and endoscopic findings were investigated for their utility in SHP diagnosis. Results: Among the 11 cases, 3 showed GI symptoms prior to other manifestations. In terms of GI symptoms, abdominal pain was reported in all 11 cases, diarrhea in 4 cases, and bloody stools in 3 cases. Endoscopic findings were seen in the stomach in 7/10 cases, in the small intestine including the duodenum in 10/11 cases, and in the large intestine in 6/10 cases. The frequency of ulcer formation was significantly higher in the small intestine (including the duodenum) than in the stomach. Multiple specific erythematosus lesions were observed in the stomach and large intestine. Conclusion: Familiarity with characteristic endoscopic findings and careful observation of all GI findings are essential for diagnosing SHP in cases in which GI tract symptoms precede cutaneous findings.
Pediatric Dermatology | 2010
Midori Nishio; Ryu Nishiyama; Yuichi Akai; Takeshi Otani; Naoto Kunoki; Taichi Nakagawa; Katsuhiko Shiozawa; Masahiko Onishi; Kiichi Hiroi; Toshikazu Watanabe; Masahiro Ogawa; Noriko Nakajima; Naohide Tanaka; Mituhiko Moriyama
Gastric Cancer | 2010
Rie Takeuchi; Ryu Nishiyama; Masahiko Onishi; Yuichi Akai; Toshikazu Watanabe; Akitake Uno; Takeshi Otani; Akifumi Ogihara; Noriyoshi Okano; Noriko Nakajima; Naohide Tanaka; Mitsuhiko Moriyama
Pediatric Dermatology | 2009
Kiyoshi Itou; Shun Kobayashi; Hitomi Ryuzaki; Akiko Hosoi; Toshiki Yamamoto; Ryu Nishiyama; Toshikazu Watanabe; Takeshi Ootani; Akihumi Ogihara; Takashi Hirai; Etu Kohashi; Naohide Tanaka; Mituhiko Moriyama; Noriko Kinukawa
Pediatric Dermatology | 2009
Kyouhei Ooyama; Akitake Uno; Noriko Nakajima; Hisako Abe; Shun Kobayashi; Naoki Matsumoto; Soichirou Ota; Rie Takeuchi; Ryu Nishiyama; Toshikazu Watanabe; Akihumi Ogihara; Noriyoshi Okano; Naohide Tanaka; Mitsuhiko Moriyama
Pediatric Dermatology | 2008
Shinobu Shoji; Akitake Uno; Naoto Kunoki; Souichirou Oota; Fujiko Egashira; Ryu Nishiyama; Toshikazu Watanabe; Toshiki Yamamoto; Akifumi Ogihara; Naohide Tanaka; Mituhiko Moriyama
Acta Gastro-Enterologica Belgica | 2008
Ryu Nishiyama; Akifumi Ogihara; Souichirou Oota; Shun Kobayashi; Masahiko Oonishi; Toshikazu Watanabe; Akitake Uno; Takeshi Ootani; Ariyoshi Iwasaki; Mituhiko Moriyama; Yasuyuki Arakawa
Pediatric Dermatology | 2007
Ryu Nishiyama; Akifumi Ogihara; Souichirou Oota; Shun Kobayashi; Rie Takeuchi; Masahiko Oonishi; Yuuichi Akai; Toshikazu Watanabe; Akitake Uno; Takeshi Ootani; Takashi Hirai; Noriyoshi Okano; Noriko Nakajima; Naohide Tanaka; Ariyoshi Iwasaki; Mituhiko Moriyama
Pediatric Dermatology | 2006
Satoshi Tanji; Akitake Uno; Shun Kobayashi; Kiyoshi Yokoyama; Masahiko Ohnishi; Teturo Nakajou; Ryu Nishiyama; Youichi Akai; Toshikazu Watanabe; Toshiki Yamamoto; Takeshi Ohtani; Akifumi Ogiwara; Noriyoshi Okano; Noriko Nakajima; Ariyoshi Iwasaki; Yasuyuki Arakawa
Gastroenterology | 2001
Noriko Nakajima; Yoko Ito; Ryu Nishiyama; Toshikazu Watanabe; Toshikazu Yamaguchi; Jiro Shioda; Kimitoshi Kato; Ariyoshi Iwasaki; Yasuyuki Arakawa; Eric R. Lacy