Yasushi Yamasaki
Okayama University
Internal medicineRadiologyEndocrinologySurgeryPathologyRenal functionChemistryApoptosisAdverse effectImmunologyGlomerular basement membraneEndoscopic submucosal dissectionPerforation (oil well)EndoscopyEndoscopic mucosal resectionProteinuriaLupus nephritisKidneyGlomerulonephritisAngiogenesisNephropathyMedicineBiologyGastroenterology
139Publications
25H-index
2,327Citations
Publications 141
Newest
#1Masayasu Ohmori (Okayama University)H-Index: 8
#2Yasushi Yamasaki (Okayama University)H-Index: 25
Last. Hiroyuki Okada (Okayama University)H-Index: 62
view all 7 authors...
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#1Yasushi Yamasaki (Okayama University)H-Index: 25
Last. Shouichi TanakaH-Index: 8
view all 55 authors...
Abstract null null Background and aims null Endoscopic resection of non-ampullary duodenal adenoma is often challenging, and its technique has not yet been standardized. To overcome the practical difficulty of conventional endoscopic mucosal resection, underwater endoscopic mucosal resection (UEMR) was recently developed; therefore, we investigated the effectiveness and safety of UEMR for non-ampullary duodenal adenoma. null null null Methods null A multicenter, prospective cohort study was cond...
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#1Shumpei Yamamoto (Okayama University)H-Index: 2
#2Hideaki Kinugasa (Okayama University)H-Index: 14
Last. Hiroyuki Okada (Okayama University)H-Index: 62
view all 16 authors...
BACKGROUND AND AIM Fusobacterium nucleatum (Fn) is involved in colorectal cancer (CRC) growth and is a biomarker for patient prognosis and management. However, the ecology of Fn in CRC and the distribution of intratumoral Fn are unknown. METHODS We evaluated Fn and the status of KRAS and BRAF in 200 colorectal neoplasms (118 adenomas and 82 cancers) and 149 matched adjacent normal mucosas. The differentiation status between "surface" and "deep" areas of cancer tissue and matched normal mucosa we...
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#1Eriko Yasutomi (Okayama University)H-Index: 4
#2Toshihiro Inokuchi (Okayama University)H-Index: 11
Last. Hiroyuki Okada (Okayama University)H-Index: 62
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Leucine-rich alpha-2 glycoprotein (LRG) may be a novel serum biomarker for patients with inflammatory bowel disease. The association of LRG with the endoscopic activity and predictability of mucosal healing (MH) was determined and compared with those of C-reactive protein (CRP) and fecal markers (fecal immunochemical test [FIT] and fecal calprotectin [Fcal]) in 166 ulcerative colitis (UC) and 56 Crohn's disease (CD) patients. In UC, LRG was correlated with the endoscopic activity and could predi...
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#1Masayasu Ohmori (Okayama University)H-Index: 8
#2Yasushi Yamasaki (Okayama University)H-Index: 25
Last. Yoji TakeuchiH-Index: 41
view all 14 authors...
BACKGROUND AND AIM Local residual/recurrent colorectal lesions after endoscopic resection (ER) are difficult to treat with conventional ER. Underwater endoscopic mucosal resection (UEMR) and endoscopic submucosal dissection (ESD) are reportedly effective. We investigated the appropriate indications of ESD and UEMR for recurrent colorectal lesions. METHODS This single-center, retrospective, observational study was conducted at a tertiary cancer institute. Patients who underwent UEMR or ESD for re...
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Background and aim Endoscopic submucosal dissection (ESD) for large polyps provides a high en bloc resection rate, accurate pathological diagnosis, and low recurrence rate. However, ESD requires advanced techniques, and underwater endoscopic mucosal resection (UEMR) is an alternative. We investigated the efficacy and safety of UEMR for 20-30-mm colorectal lesions compared with ESD. Methods We retrospectively evaluated systematically collected data of patients who underwent UEMR or ESD for 20-30-...
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#1Yasushi Yamasaki (Okayama University)H-Index: 25
#2Noriya UedoH-Index: 57
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#1Yuki Ushimaru (Osaka University)H-Index: 4
#2Noriko MatsuuraH-Index: 19
Last. Kiyokazu Nakajima (Osaka University)H-Index: 51
view all 14 authors...
Background Third-space endoscopy requires a delicate and accurate insufflation technique to secure the endoscopic visualization and maintain the working space. However, optimal third-space insufflation parameters have yet to be determined. The aim of this study was to assess: (1) the diversity of endoluminal third-space pressure by manual insufflation, and (2) the performance of the insufflation settings for third-space endoscopy. Methods A submucosal tunnel was created in the upper posterior wa...
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An enterolith in Crohn's disease is an uncommon but serious condition because it can cause intestinal obstruction. Endoscopic treatment to remove the enterolith is attempted first, but is sometimes difficult owing to poor accessibility of the endoscope. In such cases, surgical treatment is inevitable. We successfully overcame poor accessibility and removed an enterolith using double-balloon enteroscopy. We describe our method below and suggest several helpful techniques. LEARNING POINTS Patients...
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#1Yasushi Yamasaki (Okayama University)H-Index: 25
#2Keita Harada (Okayama University)H-Index: 15
Last. Hiroyuki Okada (Okayama University)H-Index: 62
view all 15 authors...
Background and study aims The propriety of cold forceps polypectomy (CFP) using jumbo biopsy forceps for diminutive polyps remains controversial. We conducted a prospective study to evaluate the complete CFP resection rate of 3-5-mm polyps using additional endoscopic mucosal resection (EMR) specimens following CFP. Patients and methods Patients with 3-5-mm protruded or flat elevated colorectal polyps diagnosed endoscopically as adenomas or serrated lesions were prospectively enrolled. CFP using ...
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