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| 1 | Current status of preoperative drainage for distal biliary obstruction显示文摘Preoperative biliary drainage(PBD) was developed to improve obstructive jaundice, which affects a number of organs and physiological mechanisms in patients waiting for surgery. However, its role in patients who will undergo pancreaticoduodenectomy for biliary obstruction remains controversial. This article aims to review the current status of the use of preoperative drainage for distal biliary obstruction. Relevant articles published from 1980 to 2015 were identified by searching MEDLINE and Pub Med using the keywords 'PBD', 'pancreaticoduodenectomy', and 'obstructive jaundice'. Additional papers were identified by a manual search of the references from key articles. Current studies have demonstrated that PBD should not be routinely performed because of the postoperative complications. PBD should only be considered in carefully selected patients, particularly in cases where surgery had to be delayed. PBD may be needed in patients with severe jaundice, concomitant cholangitis, or severe malnutrition. The optimal method of biliary drainage has yet to be confirmed. PBD should be performed by endoscopic routes rather than by percutaneous routes to avoid metastatic tumor seeding. Endoscopic stenting or nasobiliary drainage can be selected. Although more expensive, the use of metallic stents remains a viable option to achieve effective drainage without cholangitis and reintervention. | Harutoshi Sugiyama Toshio Tsuyuguchi Yuji Sakai Rintaro Mikata Shin Yasui Yuto Watanabe Dai Sakamoto Masato Nakamura Reina Sasaki Jun-ichi Senoo Yuko Kusakabe Masahiro Hayashi Osamu Yokosuka | 2015 | World Journal of Hepatology2015，7，18： | 11 |
| 2 | Utility of endoscopic retrograde cholangiopancreatography on biliopancreatic diseases in patients with Billroth Ⅱ-reconstructed stomach显示文摘AIM To examine the utility of endoscopic retrograde cholangiopancreatography(ERCP) on biliopancreatic diseases in the patients with Billroth II-reconstructed stomach.METHODS For 26 cases of biliopancreatic diseases in patients with Billroth Ⅱ-reconstructed stomach,ERCP was conducted using a straight-view scope or a retrograde obliqueviewing endoscope.All the cases were patients aiming at selective insertion into the bile duct.One patient aimed at diagnosis,and 25 patients aimed at treatment.The cases in which the endoscope reached the duodenal papilla and anastomosis,and insertion into the bile duct became possible,were considered successful.RESULTS The rate of reaching the duodenal papilla and anastomosis was 84.7%(22/26 patients).Among the cases without reaching the duodenal papilla and anastomosis,there were 2 in which the endoscope did not pass due to tumor-induced duodenal infiltration.In 1 case,the fiber did not reach the duodenal papilla due to long afferent loop.The success rate of insertion into the bile duct in patients in which the endoscope reached the duodenal papilla and anastomosis was 90.9%(20/22 patients),and the success rate of procedures including treatment was 86.3%(19/22 patients).After treatment,mild cholangitis was observed in 1 patient(4.5%,1/22 patients) but relieved conservatively.No other accidental symptom was observed.CONCLUSION It was considered that the ERCP for biliopancreatic diseases in patients with Billroth II-reconstructed stomach will become a less invasive,safe and useful examination and treatment approach. | Yuji Sakai Toshio Tsuyuguchi Rintaro Mikata Harutoshi Sugiyama Shin Yasui Masaru Miyazaki Osamu Yokosuka | 2017 | World Journal of Gastrointestinal Endoscopy2017，9，3： | 10 |
| 3 | Short-and long-term results of endoscopic ultrasoundguided transmural drainage for pancreatic pseudocysts and walled-off necrosis显示文摘AIM To evaluate the short-and long-term results of endoscopic ultrasound-guided transmural drainage(EUS-GTD) for pancreatic fluid collection(PFC) and identify the predictive factors of treatment outcome for walled-off necrosis(WON) managed by EUS-GTD alone.METHODS We investigated 103 consecutive patients with PFC who underwent EUS-GTD between September 1999 and August 2015. Patients were divided into four groups as follows: WON(n = 40), pancreatic pseudocyst(PPC; n = 11), chronic pseudocyst(n = 33), and others(n = 19). We evaluated the short-and long-term outcomes of the treatment. In cases of WON, multiple logistic regression analyses were performed to identify the predictor variables associated with the treatment success. In addition, PFC recurrence was examined in patients followed up for more than 6 mo and internal stent removal after successful EUS-GTD was confirmed.RESULTS In this study, the total technical success rate was 96.1%. The treatment success rate of WON, PPC, chronic pseudocyst, and others was 57.5%, 90.9%, 91.0%, and 89.5%, respectively. Contrast-enhanced computed tomography using the multivariate logistic regression analysis revealed that the treatment success rate of WON was significantly lower in patients with more than 50% pancreatic parenchymal necrosis(OR = 17.0; 95%CI: 1.9-150.7; P = 0.011) and in patients with more than 150 mm of PFC(OR = 27.9; 95%CI: 3.4-227.7; P = 0.002).The recurrence of PFC in the long term was 13.3%(median observation time, 38.8 mo). Mean amylase level in the cavity was significantly higher in the recurrence group than in the no recurrence group(P = 0.02).CONCLUSION The reduction of WON by EUS-GTD alone was associated with the proportion of necrotic tissue and extent of the cavity. The amylase level in the cavity may be a predictive factor for recurrence of PFC. | Yuto Watanabe Rintaro Mikata Shin Yasui Hiroshi Ohyama Harutoshi Sugiyama Yuji Sakai Toshio Tsuyuguchi Naoya Kato | 2017 | World Journal of Gastroenterology2017，23，39： | 7 |
| 4 | Efficacy of multiple biliary stenting for refractory benign biliary strictures due to chronic calcifying pancreatitis显示文摘AIM To investigate endoscopic therapy efficacy for refractory benign biliary strictures(BBS) with multiple biliary stenting and clarify predictors.METHODS Ten consecutive patients with stones in the pancreatic head and BBS due to chronic pancreatitis who underwent endoscopic therapy were evaluated. Endoscopic insertion of a single stent failed in all patients. We used plastic stents(7F, 8.5F, and 10F) and increased stents at intervals of 2 or 3 mo. Stents were removed approximately 1 year after initial stenting. BBS and common bile duct(CBD) diameter were evaluated using cholangiography. Patients were followed for ≥ 6 mo after therapy, interviewed for cholestasis symptoms, and underwent liver function testing every visit. Patients with complete and incomplete stricture dilations were compared.RESULTS Endoscopic therapy was completed in 8(80%) patients, whereas 2(20%) patients could not continue therapy because of severe acute cholangitis and abdominal abscess, respectively. The mean number of stents was 4.1 ± 1.2. In two(20%) patients, BBS did not improve; thus, a biliary stent was inserted. BBS improved in six(60%) patients. CBD diameter improved more significantly in the complete group than in the incomplete group(6.1 ± 1.8 mm vs 13.7 ± 2.2 mm, respectively, P = 0.010). Stricture length was significantly associated with complete stricture dilation(complete group; 20.5 ± 3.0 mm, incomplete group; 29.0 ± 5.1 mm, P = 0.011). Acute cholangitis did not recur during the mean follow-up period of 20.6 ± 7.3 mo.CONCLUSION Sequential endoscopic insertion of multiple stents is effective for refractory BBS caused by chronic calcifying pancreatitis. BBS length calculation can improve patient selection procedure for therapy. | Hiroshi Ohyama Rintaro Mikata Takeshi Ishihara Yuji Sakai Harutoshi Sugiyama Shin Yasui Toshio Tsuyuguchi | 2017 | World Journal of Gastrointestinal Endoscopy2017，9，1： | 6 |
| 5 | Comparison of endoscopic papillary balloon dilatation and endoscopic sphincterotomy for bile duct stones显示文摘Endoscopic treatment for bile duct stones is low-invasive and currently considered as the first choice of the treatment. For the treatment of bile duct stones, papillary treatment is necessary, and the treatments used at the time are broadly classified into two types; endoscopic papillary balloon dilatation where bile duct closing part is dilated with a balloon and endoscopic sphincterotomy(EST) where bile duct closing part is incised. Both procedures have advantages and disadvantages. Golden standard is EST, however, there are patients with difficulty for EST, thus we must select the procedure based on understanding of the characteristics of the procedure, and patient backgrounds. | Yuji Sakai Toshio Tsuyuguchi Harutoshi Sugiyama Masahiro Hayashi Jun-ichi Senoo Yuko Kusakabe Shin Yasui Rintaro Mikata Osamu Yokosuka | 2016 | World Journal of Gastrointestinal Endoscopy2016，8，10： | 6 |
| 6 | Prevention of post-endoscopic retrograde cholangiopancreatography pancreatitis by pancreatic duct stenting using a loop-tipped guidewire显示文摘AIM: To examine whether it is possible to prevent the occurrence of post-endoscopic retrograde cholangiopancreatography(ERCP) pancreatitis in patients experiencing difficulties with selective biliary duct cannulation by pancreatic duct stenting using a looptipped guidewire.METHODS: Procedure success rate, frequency of unintended insertion of the guidewire into side branches of the pancreatic duct, and incidence of procedural accidents were examined using a loop-tipped guidewire(Group A, 20 patients), and a conventional straighttype guidewire(Group B, 20 patients).RESULTS: The success rate of the procedure was 100% in both groups. Unintended insertion of the guidewire into a side branch of the pancreatic duct occurred 0.056 ± 0.23(0-1) times in Group A and 2.3 ±1.84(0-5) times in Group B; thus, unintended insertion of the guidewire into a side branch of the pancreatic duct was seen significantly less frequently in Group A. There were no procedural accidents in Group A, whereas pancreatitis occurred in one Group B patient; however, the difference between the two groups was not statistically significant. The serum amylase level after ERCP was 257.15 ± 136.4(88-628) IU/L in Group A, and 552.05 ± 534.57(101-2389) IU/L in Group B, showing a significantly lower value in Group A. Hyperamylasemia was found in two patients(10%) in Group A, and nine(45%) in Group B, showing a significantly lower value in Group A.CONCLUSION: The results suggest that in patients who experience difficulties with biliary cannulation, the use of a loop-tipped guidewire for pancreatic duct stenting may assist with the prevention of post-ERCP pancreatitis, and thereby to a reduction of the risk of post-ERCP pancreatitis or hyperamylasemia. | Yuji Sakai Toshio Tsuyuguchi Harutoshi Sugiyama Masahiro Hayashi Jun-ichi Senoo Reina Sasaki Yuko Kusakabe Masato Nakamura Shin Yasui Rintaro Mikata Masaru Miyazaki Osamu Yokosuka | 2016 | World Journal of Clinical Cases2016，4，8： | 5 |
| 7 | Endoscopic papillary large balloon dilation for bile duct stones in elderly patients显示文摘AIM: To investigate whether endoscopic papillary large balloon dilation(EPLBD) can be safety and effectively performed in patients aged ≥ 80 years. METHODS: Lithotomy by EPLBD was conducted in 106 patients with bile duct stones ≥ 13 mm in size or with three or more bile duct stones ≥ 10 mm. The patients were divided into group A(< 80 years) and group B(≥ 80 years). Procedure success rate, number of endoscopic retrograde cholangiopancreatographies(ERCP), and incidence of complications were examined in both groups.RESULTS: Group B tended to include significantly more patients with peripapillary diverticulum, hypertension, hyperlipemia, cerebrovascular disease/dementia, respiratory disease/cardiac disease, and patients administered an anticoagulant or antiplatelet agent(P < 0.05). The success rate of the initial lithotomy was 88.7(94/106)%. The final lithotomy rate was 100(106/106)%. Complications due to treatment procedure occurred in 4.72(5/106)% of the patients. There was no significant difference in procedure success rate, number of ERCP, or incidence of complications between group A and group B.CONCLUSION: EPLBD can be safely performed in elderly patients, the same as in younger patients. | Yuji Sakai Toshio Tsuyuguchi Harutoshi Sugiyama Reina Sasaki Dai Sakamoto Masato Nakamura Yuuto Watanabe Takao Nishikawa Shin Yasui Rintaro Mikata Osamu Yokosuka | 2015 | World Journal of Clinical Cases2015，3，4： | 4 |
| 8 | Current status of diagnosis and therapy for intraductal papillary neoplasm of the bile duct显示文摘Bile duct epithelial tumours showing papillary neoplasm in the bile duct lumen are present in the intrahepatic and extrahepatic bile ducts.Clinicopathological images of these tumours are distinctive and diverse,including histological images with a low to high grade dysplasia,infiltrating and noninfiltrating characteristics,excessive mucus production,and similarity to intraductal papillary mucinous neoplasm(IPMN)of the pancreas.The World Health Organization Classification of Tumours of the Digestive System in 2010 named these features,intraductal papillary neoplasm of the bile duct(IPNB),as precancerous lesion of biliary carcinoma.IPNB is currently classified into type 1 that is similar to IPMN,and type 2 that is not similar to IPMN.Many of IPNB spreads superficially,and diagnosis with cholangioscopy is considered mandatory to identify accurate localization and progression.Prognosis of IPNB is said to be better than normal bile duct cancer. | Yuji Sakai Masayuki Ohtsuka Harutoshi Sugiyama Rintaro Mikata Shin Yasui Izumi Ohno Yotaro Iino Jun Kato Toshio Tsuyuguchi Naoya Kato | 2021 | World Journal of Gastroenterology2021，27，15： | 3 |
| 9 | Randomized controlled study of gemcitabine plus S-1 combination chemotherapy versus gemcitabine for unresectable pancreatic cancer显示文摘 | Kentaro Sudo Takeshi Ishihara Nobuto Hirata Fumiaki Ozawa Tadashi Ohshima Ryosaku Azemoto Kenji Shimura Takeshi Nihei Takayoshi Nishino Akihiko Nakagawa Kazuyoshi Nakamura Taro Hara Motohisa Tada Rintaro Mikata Katsunobu Tawada Osamu Yokosuka So Nakaji Ta | 2014 | Cancer Chemotherapy and Pharmacology2014，，2： | 2 |
| 10 | Inhibition of growth of human prostate cancer xenograft by transfection of p53 gene:gene transfer by electroporation显示文摘 | Mikata K Uemura H Ohuchi H | 2002 | Mol Cancer Ther2002，1，4： | 1 |
| 11 | Two cases of human epidermal growth factor receptor 2-positive advanced gastric cancer successfully treated with S-1,cisplatin,and trastuzumab combination therapy followed by curative resection显示文摘 | Yasuyama A Mikata S Soma Y | 2013 | Gan To Kagaku Ryoho2013，40，： | 1 |
| 12 | Use of F-18 Fluorodeoxyglucose Positron Emission Tomography With Dual-Phase Imaging to Identify Intraductal Papillary Mucinous Neoplasm显示文摘 | Masayoshi Saito Takeshi Ishihara Motohisa Tada Toshio Tsuyuguchi Rintaro Mikata Yuji Sakai Katsunobu Tawada Harutoshi Sugiyama Jo Kurosawa Masayuki Otsuka Yoshitaka Uchida Katsuhiro Uchiyama Masaru Miyazaki Osamu Yokosuka | 2013 | Clinical Gastroenterology and Hepatology2013，，： | 1 |
| 13 | Inhibition of growth of human prostate cancer xenograft by transfection of P53 gene: gene transfer by electroporation 显示文摘 | Mikata K Uemura H Ohuchi H | 2002 | Mol Cancer Ther2002，1，4： | 1 |
| 14 | 查看详情显示文摘 | Mikata Y Takahashi K Noguchi Y Storr T | | 0，，： | 1 |
| 15 | Efficacy of stone density on noncontrast computed tomography in predicting the outcome of extracorporeal shock wave lithotripsy for patients with pancreatic stones显示文摘 | Ohyama H Mikata R Ishihara T | 2015 | Pancreas2015，44，3： | 1 |
| 16 | BCL2L10 is frequently silenced by promoter hypermethylation in gastric cancer 显示文摘 | Mikata R Fukai K Imazeki F | 2010 | Oncol Rep2010，23，6： | 1 |
| 17 | Two cases of human epidermal growth factor receptor 2-positive advanced gastric cancer successfully treated with S-1, cisplatin, and trastuzumab combination therapy followed by curative resection 显示文摘 | Yasuyama A Mikata S Soma Y | 2013 | Gan To Kagaku Ryoho2013，40，12： | 1 |
| 18 | Absorption,tis- sue distrlbution,cxcretion and metabolism of clothianidin in rats显示文摘 | Yokota T Mikata K Nagasaki H | 2003 | J Agile Food Chem2003，51，： | 1 |
| 19 | Functional feature of C5b-8-step lysis of swine endothelial cell- transfected CD59 显示文摘 | Miyagawa S Shirakura R Mikata S | 1996 | Transplant Proc1996，28，2： | 1 |
| 20 | Treatment with TAE of subcapsular hematoma as a complication of extracorporeal shock wave lithotripsy (ESWL):a case report显示文摘 | Hirai K Kita K Mikata K | 2005 | Hinyokika Kiyo2005，51，3： | 1 |
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