Network


Latest external collaboration on country level. Dive into details by clicking on the dots.

Hotspot


Dive into the research topics where Toshikazu Watanabe is active.

Publication


Featured researches published by Toshikazu Watanabe.


Digestion | 2008

Endoscope Images of Schönlein-Henoch Purpura

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

A case of foreign body discovered due to gastrointestinal bleeding

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

Five cases of amebic colitis detected at screening colonoscopy

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

A case of happened in succession intestinal tuberculosis diagnosed with intestinal obstruction

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

A case of metachronous early gastric cancer after 5years after Helicobacter pylori eradication therapy

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

A case of small intestinal telangiectasia diagnosed and treated by double balloon enteroscopy

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

TWO CASES OF COLONIC EROSION FORMED BY A CLIP THAT WAS PERFORMED FOR DIVERTICULUM BLEEDING

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

A case of bleeding after polypectomy on the 15th day and the 24th day

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

A Case of Asymptomatic Anisakiasis of the Colon Successfully Treated by Screening Endoscopic Reject

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

The effect of interleukin-16 on the expression of cytokeratin 20 and transforming growth factor alpha on gastric epithelial cells infected with Helicobacter pylori

Noriko Nakajima; Yoko Ito; Ryu Nishiyama; Toshikazu Watanabe; Toshikazu Yamaguchi; Jiro Shioda; Kimitoshi Kato; Ariyoshi Iwasaki; Yasuyuki Arakawa; Eric R. Lacy

Collaboration


Dive into the Toshikazu Watanabe's collaboration.

Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Researchain Logo
Decentralizing Knowledge