M
Masaharu Yoshihara
Researcher at Hiroshima University
Publications - 292
Citations - 11254
Masaharu Yoshihara is an academic researcher from Hiroshima University. The author has contributed to research in topics: Helicobacter pylori & Cancer. The author has an hindex of 59, co-authored 291 publications receiving 10579 citations.
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Journal ArticleDOI
Advantage of endoscopic submucosal dissection compared with EMR for early gastric cancer
Shiro Oka,Shinji Tanaka,Iwao Kaneko,Ritsuo Mouri,Mayuko Hirata,Toru Kawamura,Masaharu Yoshihara,Kazuaki Chayama +7 more
TL;DR: ESD increased en bloc and histologically complete resection rates and may reduce the local recurrence rate and increased operation time and complication risks with ESD in comparison with EMR remain problematic.
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Clinicopathologic features and endoscopic treatment of superficially spreading colorectal neoplasms larger than 20 mm
Shinji Tanaka,Ken Haruma,Shiro Oka,Ryoji Takahashi,Masaki Kunihiro,Yasuhiko Kitadai,Masaharu Yoshihara,Fumio Shimamoto,Kazuaki Chayama +8 more
TL;DR: Laterally spreading tumors larger than 20 mm, especially those of the G-type, have a low rate of invasion despite their relatively large size and EMR is an effective and safe treatment for the large laterally spreading tumor.
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Magnifying endoscopy with narrow band imaging for diagnosis of colorectal tumors
Mayuko Hirata,Shinji Tanaka,Shiro Oka,Iwao Kaneko,Shigeto Yoshida,Masaharu Yoshihara,Kazuaki Chayama +6 more
TL;DR: Determination of pit patterns of colorectal neoplasias by NBI magnification was nearly the same as that by standard magnification with chromoendoscopy, and NBI can distinguish neoplastic and nonneoplastic lesions without chromo endoscopy.
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Outcome of endoscopic submucosal dissection for colorectal tumors accompanied by fibrosis.
Aki Matsumoto,Shinji Tanaka,Sayaka Oba,Hiroyuki Kanao,Shiro Oka,Masaharu Yoshihara,Kazuaki Chayama +6 more
TL;DR: Experienced operators could safely perform complete en bloc resection in the cases of lesions with F0–1 fibrosis, however, the rate of complete en block resection was low and the perforation rate was high even when ESD was performed by an experienced operator.
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Genetic polymorphisms and esophageal cancer risk
TL;DR: In this article, the authors reviewed and evaluated the published data regarding the contribution of genetic polymorphisms to risk of esophageal cancer, including squamous cell carcinoma (SCC) and adenocarcinoma, in humans.