Faculty Profiles - MATSUMOTO Kazuyuki

Papers - MATSUMOTO Kazuyuki

Division display 101 - 120 of about 169 ／ All the affair displays >>

Preoperative Detection of Tumor Seeding after Endoscopic Ultrasonography-guided Fine Needle Aspiration for Pancreatic Cancer.

Kazuyuki Matsumoto, Hironari Kato, Noriyuki Tanaka, Hiroyuki Okada

Internal medicine (Tokyo, Japan) 57 ( 12 ) 1797 - 1798 2018.6

Efficacy of endoscopic treatment using double-balloon enteroscopy for postoperative bile leakage in patients with hepaticojejunostomy. International journal

Kazuyuki Matsumoto, Koichiro Tsutsumi, Hironari Kato, Shigeru Horiguchi, Yosuke Saragai, Saimon Takada, Sho Mizukawa, Shinichiro Muro, Daisuke Uchida, Takeshi Tomoda, Hiroyuki Okada

Endoscopy international open 6 ( 2 ) E211-E216 2018.2

Epidermoid Cyst in an Intrapancreatic Accessory Spleen Diagnosed by Typical Radiographic Images and Endoscopic Ultrasound Fine-Needle Aspiration Findings With Contrast Agent. International journal

Kazuyuki Matsumoto, Hironari Kato, Hiroyuki Okada

Clinical gastroenterology and hepatology : the official clinical practice journal of the American Gastroenterological Association 16 ( 2 ) e13-e14 2018.2

Endoscopic balloon dilatation for benign hepaticojejunostomy anastomotic stricture using short double-balloon enteroscopy in patients with a prior Whipple's procedure: a retrospective study. International journal

Sho Mizukawa, Koichiro Tsutsumi, Hironari Kato, Shinichiro Muro, Yutaka Akimoto, Daisuke Uchida, Kazuyuki Matsumoto, Takeshi Tomoda, Shigeru Horiguchi, Hiroyuki Okada

BMC gastroenterology 18 ( 1 ) 14 - 14 2018.1

Language：English Publishing type：Research paper (scientific journal)

BACKGROUND: Endoscopic retrograde cholangiography using a short double-balloon endoscope (DB-ERC) is a promising minimally-invasive method for accessing hepaticojejunostomy (HJ) anastomosis in patients with surgically altered anatomy. We aimed to evaluate the immediate and long-term outcomes of balloon dilatation for benign HJ anastomotic stricture (HJAS) in patients who had previously undergone Whipple's procedure using a DB-ERC. METHODS: We conducted a retrospective analysis of 46 patients who underwent balloon dilatation alone with a DB-ERC for benign HJAS between November 2008 and November 2014. The median follow-up duration was 3.5 (interquartile range [IQR], 1.9-5.1) years. RESULTS: The technical and clinical success rates were 100%, and adverse events occurred in 7% (3/46, cholangitis). The median hospitalization period was seven (IQR, 5-10) days. Of 42 patients (91%) followed-up for > 1 year, 24 (51%) had recurrent HJAS at a median of 1.2 (IQR, 0.6-2.9) years after balloon dilatation. The cumulative anastomotic patency rates at 1, 2, and 3 years were 73, 55, and 49%, respectively. In univariate analysis, early stricture formation (< 1 year) was a risk factor for recurrent stenosis, although no statistically significant risk factors were observed in multivariate analysis. CONCLUSIONS: Endoscopic balloon dilatation with DB-ERC for benign HJAS is effective and safe, having good immediate technical success and few adverse events. Further improvements to this procedure are needed to prevent recurrent HJAS.

DOI： 10.1186/s12876-018-0742-x

PubMed

researchmap

Indications for Endoscopic Ultrasound-Guided Pancreatic Drainage: For Benign or Malignant Cases? International journal

Daisuke Uchida, Hironari Kato, Yosuke Saragai, Saimon Takada, Sho Mizukawa, Shinichiro Muro, Yutaka Akimoto, Takeshi Tomoda, Kazuyuki Matsumoto, Shigeru Horiguchi, Hiroyuki Okada

Canadian journal of gastroenterology & hepatology 2018 8216109 - 8216109 2018

Language：English Publishing type：Research paper (scientific journal)

Background and Aims: Recurrent pancreatitis associated with pancreatic strictures requires treatment with endoscopic retrograde pancreatography (ERP), but it is sometimes technically unsuccessful. Endoscopic ultrasound-guided pancreatic drainage (EUS-PD) was developed as an alternative to a surgical approach after failed ERP; however, the indications for EUS-PD are unclear. In this study, we evaluated the outcomes of EUS-PD and established the indications for EUS-PD. Methods: A total of 15 patients had indications for EUS-PD for recurrent pancreatitis due to pancreatic strictures. There were eight patients with benign pancreatic strictures and seven with malignant pancreatic strictures. The success rate, adverse events, and long-term outcomes were evaluated. Results: The technical success rates of benign and malignant strictures were 75% (6/8) and 100% (7/7), respectively, and clinical success was achieved in 100% (6/6) and 87.5% of cases (6/7), respectively. Rendezvous procedures were performed in two patients with benign strictures. The adverse event (AE) rate was 26.7% (4/15) and included cases of peritonitis, bleeding, and stent migration. Reinterventions were performed in three patients with benign strictures and two with malignant strictures. Conclusions: EUS-PD was an appropriate treatment for not only benign strictures but also malignant strictures with recurrent pancreatitis after failed ERP. However, the AE rate was high, and reinterventions were required in some cases during long-term follow-up. The indications for EUS-PD should be considered carefully, and careful follow-up is needed.

DOI： 10.1155/2018/8216109

PubMed

researchmap

Liquid biopsy of bile for the molecular diagnosis of gallbladder cancer. International journal

Hideaki Kinugasa, Kazuhiro Nouso, Soichiro Ako, Chihiro Dohi, Hiroshi Matsushita, Kazuyuki Matsumoto, Hironari Kato, Hiroyuki Okada

Cancer biology & therapy 19 ( 10 ) 934 - 938 2018

Language：English Publishing type：Research paper (scientific journal)

INTRODUCTION: Tissue sampling of gallbladder cancer (GBCa) is challenging because of the anatomy of the gallbladder. The aim of this study is to investigate the possibility of diagnosing GBCa patients by performing a liquid biopsy of bile in addition to current diagnostic methods. METHODS: Thirty patients with GBCa were enrolled in this study. Cytological examination was performed in all patients. Using next generation sequencing (NGS), DNA isolated from the bile and tumor tissue was analyzed for mutations in 49 oncogenes. We also compared these mutations with cytology results. RESULTS: 57.1% of DNA samples from tumor tissue were positive for a mutation. In these patients, 87.5% of the bile circulating tumor DNA (ctDNA) samples had the same mutation. The concordance rate between bile ctDNA and tissue DNA samples was 85.7%, and the mutation frequencies detected in ctDNA were approximately half of what was detected in tumor tissue DNA. On the other hand, the sensitivity of the cytological and bile ctDNA analyses was 45.8% and 58.3%, respectively. The concordance rate between cytology and bile ctDNA analyses was 87.5%. CONCLUSIONS: Mutated tumor DNA could be detected in bile by NGS. Liquid biopsy of bile might help us to diagnose GBCa because of higher sensitivity and positive predict value compared to cytology with ERCP.

DOI： 10.1080/15384047.2018.1456604

PubMed

researchmap

Endoscopic Ultrasound-Guided Hepaticogastrostomy Is Effective for Repeated Recurrent Cholangitis after Surgery: Two Case Reports. International journal

Akihiro Matsumi, Hironari Kato, Yousuke Saragai, Sho Mizukawa, Saimon Takada, Shinichiro Muro, Daisuke Uchida, Takeshi Tomoda, Kazuyuki Matsumoto, Masaya Iwamuro, Shigeru Horiguchi, Yoshiro Kawahara, Hiroyuki Okada

Case reports in gastrointestinal medicine 2018 7201967 - 7201967 2018

Language：English

We report the cases of two patients who underwent endoscopic ultrasound-guided hepaticogastrostomy (EUS-HGS) using metallic stents (MS) for recurrent cholangitis due to benign biliary stenosis. The patients had repeatedly undergone double-balloon endoscopy and anastomotic stenosis. Thus, EUS-HGS was performed. The procedures were successful, and placement of a covered metallic stent (C-MS) relieved cholangitis. The occurrence of cholangitis was subsequently considerably reduced. For patients with postoperative recurrent cholangitis, EUS-HGS with MS should be considered because of its efficacy and safety.

DOI： 10.1155/2018/7201967

PubMed

researchmap

Usefulness of a Cannula with a Flexible Tip (Swing Tip) for Managing Severe Biliary Stricture. International journal

Daisuke Uchida, Hironari Kato, Yosuke Saragai, Saimon Takada, Shinichiro Muro, Takeshi Tomoda, Kazuyuki Matsumoto, Shigeru Horiguchi, Hiroyuki Okada

Canadian journal of gastroenterology & hepatology 2018 7125714 - 7125714 2018

Language：English Publishing type：Research paper (scientific journal)

Background and Aims: Biliary stenting for the treatment of biliary stricture is the most common indication of ERCP, but the procedure is sometimes unsuccessful because of severe strictures. The Swing Tip is useful for passing through severe strictures because it has a manually operable tip. The efficacy of using a Swing Tip was retrospectively evaluated. Methods: The 2353 patients who underwent ERCP for biliary stenting at our facility between January 2012 and July 2018 were enrolled. In all patients, procedures were begun using tapered tip-catheters, and Swing Tips were used if the procedure was found to be difficult with other devices. The indication for switching to the Swing Tip and the technical success rate were retrospectively evaluated. Results: A total of 99 patients (4.2%) underwent ERCP using the Swing Tip, including 49 patients for the selection of biliary branches and 50 for exchanging guidewires for rigid ones. In these patients, biliary stenting was successful in 22 patients (44.9%) and 45 patients (90%), respectively. The other 32 patients with failed endoscopic biliary drainage were treated via alternative approaches, such as percutaneous procedures, surgeries, or conservative treatments. There were no adverse events associated with the Swing Tip. Conclusion: The Swing Tip was technically feasible especially for exchanging guidewires during ERCP. Percutaneous procedures or surgical treatments can be avoided by using the Swing Tip. Ethical Statements: This study was approved by the institutional review board of Okayama University. All subjects provided informed consent. The study was registered in the UMIN protocol registration system (identification number UMIN 000033692).

DOI： 10.1155/2018/7125714

PubMed

researchmap

Comparison of two fluoroscopic images to ensure efficient scope insertion for biliary intervention in patients with Roux-en-Y hepaticojejunostomy. International journal

Koichiro Tsutsumi, Hironari Kato, Ken Hirao, Sho Mizukawa, Shinichiro Muro, Yutaka Akimoto, Daisuke Uchida, Kazuyuki Matsumoto, Takeshi Tomoda, Shigeru Horiguchi, Shuntaro Yabe, Hiroyuki Seki, Yasuhiro Noma, Naoki Yamamoto, Ryo Harada, Tsuneyoshi Ogawa, Hiroyuki Okada

Endoscopy 49 ( 12 ) 1256 - 1261 2017.12

Language：English Publishing type：Research paper (scientific journal)

Background and study aims No standard procedure for endoscopic retrograde cholangiopancreatography is available for patients with Roux-en-Y hepaticojejunostomy (RYHJ) with side-to-end hepaticojejunostomy. We therefore explored methods of efficient scope insertion at a hepaticojejunostomy site. Patients and methods Patients with suspected biliary disease were prospectively enrolled. Based on two fluoroscopic images obtained on scope insertion into each lumen of a two-pronged Roux-en-Y anastomosis, we selected the lumen in which the distal end of the scope progressed toward the patient's liver or head. The accuracy of this method for selecting the correct lumen leading to the hepaticojejunostomy site was investigated. Results Of the 33 included patients, successful insertion to the hepaticojejunostomy site was achieved in 32 (97 %), 26 (81 %) of whom had undergone the imaging method. The accuracy of the method was 88 % (23/26). The time required for insertion between the anastomotic site and the hepaticojejunostomy site was shorter when the lumen selection had been correct (13 minutes [7 - 30] (n = 23) vs. 18 minutes [8 - 28] (n = 9); P = 0.95). Conclusion This method based on two fluoroscopic images was useful for achieving efficient scope insertion in patients with RYHJ.Trial registered at University Hospital Medical Information Network Clinical Trials Registry (UMIN000014183).

DOI： 10.1055/s-0043-117406

PubMed

researchmap

Usefulness of a newly designed plastic stent for endoscopic re-intervention in patients with malignant hilar biliary obstruction. International journal

Takeshi Tomoda, Hironari Kato, Hirofumi Kawamoto, Shinichiro Muro, Yutaka Akimoto, Daisuke Uchida, Kazuyuki Matsumoto, Shigeru Horiguchi, Koichiro Tsutsumi, Hiroyuki Okada

Endoscopy 49 ( 11 ) 1087 - 1091 2017.11

Language：English Publishing type：Research paper (scientific journal)

Background and study aims We designed a new 7-Fr plastic stent for treating self-expandable metal stent (SEMS) obstruction in patients with malignant hilar biliary obstruction (MHBO) via endoscopic re-intervention with the stent-in-stent (SIS) method and evaluated its efficacy. Patients and methods A total of 33 consecutive patients who underwent endoscopic re-intervention for metal stent obstruction after multi-branched SEMS placement were enrolled. The initial SEMSs were placed in two or three biliary branches in 14 and 19 patients, respectively. We retrospectively evaluated the technical and clinical success, and adverse events. Technical success was defined as successful plastic stent placement into all target branches through the lumen of the SEMS. Results The technical success rates were 85.7 % (12/14) and 78.9 % (15/19) in patients who underwent two- or three-branched biliary drainage, respectively. The clinical success rate was 100 % in the 27 patients in whom technical success was achieved. We achieved successful plastic stent placement in more than two branches, using the new plastic stent combined with a conventional plastic stent, in 97.0 % (32/33). Conclusions This new plastic stent was technically feasible for treating stent obstruction via re-intervention with SIS methods.

DOI： 10.1055/s-0043-116215

PubMed

researchmap

Techniques for scope insertion by utilizing the "suture line on the jejunojejunostomy" in balloon enteroscopeassisted ercp in patients with surgically altered anatomies

Koichiro Tsutsumi, Hironari Kato, Shigeru Horiguchi, Kazuyuki Matsumoto, Takeshi Tomoda, Daisuke Uchida, Yutaka Akimoto, Shinichiro Muro, Sho Mizukawa, Hiroyuki Okada

Gastroenterological Endoscopy 59 ( 8 ) 1644 - 1652 2017.8

A Multicenter, Prospective, Randomized Controlled Trial Evaluating the Efficacy of Rectal Diclofenac and Sublingual Nitrate as a Combined Prophylactic Treatment for Post-ERCP Pancreatitis.

Takeshi Tomoda, Hironari Kato, Sho Mizukawa, Shinichiro Muro, Yutaka Akimoto, Daisuke Uchida, Kazuyuki Matsumoto, Naoki Yamamoto, Shigeru Horiguchi, Koichiro Tsutsumi, Hiroyuki Okada

Acta medica Okayama 71 ( 4 ) 357 - 362 2017.8

Language：English

Acute pancreatitis is the major complication of endoscopic retrograde cholangiopancreatography(ERCP). A preliminary research suggested that the administration of nonsteroidal anti-inflammatory drugs (NSAIDs) with nitrate might reduce the incidence of post-ERCP pancreatitis (PEP) more effectively than NSAIDs alone. We conduct a two-arm, multicenter, prospective, randomized, superiority trial to evaluate the additional effect of nitrate for prevention of PEP. A total of 900 patients randomly receive 50 mg diclofenac suppository either alone or with 5 mg isosorbide dinitrate sublingual tablet. The primary endpoint is the occurrence of PEP. This study will clarify whether NSAIDs plus nitrate can prevent PEP.

DOI： 10.18926/AMO/55314

PubMed

researchmap

Long-term outcomes and risk factors of biliary stent dysfunction after endoscopic double stenting for malignant biliary and duodenal obstructions. International journal

Kazuyuki Matsumoto, Hironari Kato, Koichiro Tsutsumi, Sho Mizukawa, Syuntaro Yabe, Hiroyuki Seki, Yutaka Akimoto, Daisuke Uchida, Takeshi Tomoda, Naoki Yamamoto, Shigeru Horiguchi, Kenji Kuwaki, Hiroyuki Okada

Digestive endoscopy : official journal of the Japan Gastroenterological Endoscopy Society 29 ( 5 ) 617 - 625 2017.7

Language：English Publishing type：Research paper (scientific journal)

BACKGROUND AND AIM: Few reports describe the endoscopic double-stenting procedure for malignant biliary and duodenal obstructions. We evaluated the clinical outcomes from double stenting, and analyzed the risk factors for biliary stent dysfunction following double stenting. METHODS: Eighty-one patients who underwent endoscopic double stenting for malignant biliary and duodenal obstructions were retrospectively analyzed. We determined the stent dysfunction rate and the biliary stent dysfunction risk factors, and analyzed the endoscopic reintervention results. RESULTS: Overall survival time and survival time following double stenting were 365 (38-1673) days and 73 (20-954) days, respectively. After double stenting, the 3-month and 6-month duodenal stent dysfunction rates were 14% and 41%, respectively. Reintervention technical success rate was 100% (10/10), and mean gastric outlet obstruction scoring system scores improved from 0.7 to 2.4 points (P < 0.001). The 3-month and 6-month biliary stent dysfunction rates were 26% and 41%, respectively. The reintervention technical and clinical success rates were 95% (20/21) and 81% (17/21), respectively. Risk factors for biliary stent dysfunction following double stenting were events associated with duodenal stent dysfunction (odds ratio [OR], 11.1; 95% confidence interval [CI], 2.09-87.4; P = 0.0044) and the biliary stent end's location (OR, 6.93; 95% CI, 1.37-40.2; P = 0.0019). CONCLUSIONS: Some patients had stent dysfunction irrespective of the survival period after double stenting. Endoscopic reintervention was technically feasible and clinically effective even after double stenting. Duodenal stent dysfunction and biliary stent end's location were risk factors for biliary stent dysfunction.

DOI： 10.1111/den.12830

PubMed

researchmap

Predictive factors for outcomes of patients undergoing endoscopic therapy for bile leak after hepatobiliary surgery. International journal

Shuntaro Yabe, Hironari Kato, Sho Mizukawa, Yutaka Akimoto, Daisuke Uchida, Hiroyuki Seki, Takeshi Tomoda, Kazuyuki Matsumoto, Naoki Yamamoto, Shigeru Horiguchi, Koichiro Tsutsumi, Hiroyuki Okada

Digestive endoscopy : official journal of the Japan Gastroenterological Endoscopy Society 29 ( 3 ) 353 - 361 2017.5

Language：English Publishing type：Research paper (scientific journal)

BACKGROUND AND AIM: Endoscopic procedures are used as first-line treatment for bile leak after hepatobiliary surgery. Advances have been made in endoscopic techniques and devices, but few reports have described the effectiveness of endoscopic procedures and the management principles based on severity of bile leak. We evaluated the effectiveness of an endoscopic procedure for the treatment of bile leak after hepatobiliary surgery. METHODS: Fifty-eight patients underwent an endoscopic procedure for suspected bile leak after hepatobiliary surgery; the presence of bile leak on endoscopic retrograde cholangiopancreatography (ERCP) was evaluated retrospectively. Two groups were created based on bile leak severity at ERCP. We defined success as follows: technical, successful placement of the plastic stent at the intended bile duct; clinical, improvement in symptoms of bile leak; and eventual, disappearance of bile leak at ERCP. We evaluated several factors that influenced the success of the endoscopic procedure and the differences between bile leak severity. RESULTS: Success rates were as follows: technical, 90%; clinical, 79%; and eventual, 71%. Median interval between first endoscopic procedure and achievement of eventual success was 135 days (IQR, 86-257 days). Bile leak severity was the only independent factor associated with eventual success (P = 0.01). CONCLUSIONS: Endoscopic therapy is safe and effective for postoperative bile leak. Bile leak severity is the most important factor influencing successful endoscopic therapy.

DOI： 10.1111/den.12798

PubMed

researchmap

Dynamic computed tomography is useful for prediction of pathological grade in pancreatic neuroendocrine neoplasm. International journal

Shigeru Horiguchi, Hironari Kato, Hidenori Shiraha, Koichiro Tsutsumi, Naoki Yamamoto, Kazuyuki Matsumoto, Takeshi Tomoda, Daisuke Uchida, Yutaka Akimoto, Syou Mizukawa, Takehiro Tanaka, Koichi Ichimura, Akinobu Takaki, Takahito Yagi, Hiroyuki Okada

Journal of gastroenterology and hepatology 32 ( 4 ) 925 - 931 2017.4

Language：English Publishing type：Research paper (scientific journal)

BACKGROUND AND AIM: Pathological grading is important in defining the therapeutic strategy in pancreatic neuroendocrine neoplasm (PNEN) but is difficult for unresectable cases. Endoscopic ultrasound (EUS)-guided fine needle aspiration (FNA) is useful in the diagnosis of PNEN, but its usefulness for pathological grading is not well established. No studies have examined the diagnostic ability of dynamic computed tomography (CT) for pathological grading of PNEN. We investigated the usefulness of EUS-FNA and dynamic CT in the diagnosis and pathological grading of PNEN. METHODS: In this retrospective study, 39 PNEN patients finally diagnosed via EUS-FNA and/or surgical resection underwent dynamic CT. Pathological samples were diagnosed based on WHO2010; staging was based on the European Neuroendocrine Tumor Society classification. The proportion of the quantification value in the tumor to the pancreatic parenchyma in arterial phase was defined as the CT ratio. Immunohistochemical staining with CD31 was performed to evaluate microvessel density (MVD). We evaluated the relationship between pathological grade, CT ratio, and MVD. RESULTS: By using EUS-FNA, 35 of 39 (90%) cases were diagnosed as PNEN. As for pathological grade, 15 of 35 (43%) cases could be identified correctly. CT ratio could predict pathological Grade 3 disease. The sensitivity, specificity, and diagnostic accuracy were 100%, 94%, and 95%. MVD was significantly correlated with CT ratio (r = 0.83, P < 0.0001) and pathological grade (P = 0.0074). CONCLUSIONS: Computed tomography ratio has a relationship with pathological grade in PNEN, which would help decide therapeutic strategy in unresectable cases and cases in which pathological grading is difficult.

DOI： 10.1111/jgh.13594

PubMed

researchmap

Utility of serum DNA as a marker for KRAS mutations in pancreatic cancer tissue Reviewed

Soichiro Ako, Kazuhiro Nouso, Hideaki Kinugasa, Chihiro Dohi, Hiroshi Matushita, Sho Mizukawa, Shinichiro Muro, Yutaka Akimoto, Daisuke Uchida, Takeshi Tomoda, Kazuyuki Matsumoto, Shigeru Horiguchi, Koichiro Tsutsumi, Hironari Kato, Hiroyuki Okada

PANCREATOLOGY 17 ( 2 ) 285 - 290 2017.3

A comparative evaluation of treatment methods for bile duct stones after hepaticojejunostomy between percutaneous transhepatic cholangioscopy and peroral, short double-balloon enteroscopy. International journal

Koichiro Tsutsumi, Hironari Kato, Shuntaro Yabe, Sho Mizukawa, Hiroyuki Seki, Yutaka Akimoto, Daisuke Uchida, Kazuyuki Matsumoto, Takeshi Tomoda, Naoki Yamamoto, Shigeru Horiguchi, Hirofumi Kawamoto, Hiroyuki Okada

Therapeutic advances in gastroenterology 10 ( 1 ) 54 - 67 2017.1

Language：English Publishing type：Research paper (scientific journal)

BACKGROUND: Bile duct stones after hepaticojejunostomy are considered a troublesome adverse event. Although percutaneous transhepatic procedures using a cholangioscopy is performed to treat these bile duct stones, a peroral endoscopic procedure using a short, double-balloon enteroscope (sDBE) is an alternative. This study aimed to compare the immediate and long-term outcomes of both treatments for bile duct stones in patients who underwent prior hepaticojejunostomy. METHODS: Between October 2001 and May 2013, 40 consecutive patients were treated for bile duct stones after hepaticojejunostomy at a tertiary care hospital. Initial success with biliary access, biliary intervention-related technical success, clinical success, adverse events, hospitalization duration, and stone-free survival were retrospectively evaluated. RESULTS: The initial success rates for biliary access were 100% (8/8) with percutaneous transhepatic cholangioscopy (PTCS) and 91% (29/32) with sDBE. In three patients in whom biliary access during initial sDBE failed, successful access with subsequent PTCS was achieved, and biliary intervention-related technical success and clinical success were eventually achieved in all 40 patients. The rate of adverse events was significantly lower with sDBE than with PTCS (10% versus 45%; p = 0.025). The median hospitalization duration for complete stone clearance was significantly shorter with sDBE than with PTCS (10 versus 35 days; p < 0.001). During the median 7.2 year or 3.1 year follow up, the probabilities of being stone-free at 1, 2, and 3 years were 100%, 73%, and 64% for PTCS and 85%, 65%, and 59% for sDBE, respectively (p = 0.919). CONCLUSIONS: sDBE was useful, with few adverse events and short hospitalization; therefore, experienced endoscopists can consider it as first-line treatment for bile duct stones in patients with prior hepaticojejunostomy.

DOI： 10.1177/1756283X16674633

PubMed

researchmap

ENDOSCOPIC MANAGEMENT OF OCCLUDED METALLIC STENTS DEPLOYED FOR MALIGNANT HILAR BILIARY STRICTURE

KATO Hironari, TOMODA Takeshi, MATSUMOTO Kazuyuki, HORIGUCHI Shigeru, TSUTSUMI Koichiro, OKADA Hiroyuki

Gastroenterological Endoscopy 59 ( 7 ) 1524 - 1531 2017

Language：Japanese Publisher：Japan Gastroenterological Endoscopy Society

<p>Endoscopic management of occluded metallic stents deployed for malignant hilar biliary stricture is technically demanding. Understanding the characteristics of devices such as guidewires, catheters, and stents, and handling these devices skillfully are essential for successful management. The passage of catheters and plastic stents (PS) through the mesh of metallic stents (MS) is the most difficult of all procedures for multiple occluded MS that had been deployed by the stent-in-stent method, and requires precise and careful maneuvering of the endoscope and other devices. The order of PS deployment into the occluded MS is also important. The order of PS deployment has to be same as that of the previous MS deployment. Skilled techniques of not only endoscopists but also their assistants are necessary for the successful management of multiple occluded MS deployed at the hilar portion. Therefore, it is important for endoscopists to become skilled in maneuvering guidewires in daily examinations.</p>

DOI： 10.11280/gee.59.1524

CiNii Article

researchmap

Outcomes of management for biliary stricture after living donor liver transplantation with hepaticojejunostomy using short-type double-balloon enteroscopy. International journal

Takeshi Tomoda, Koichiro Tsutsumi, Hironari Kato, Sho Mizukawa, Syuntaro Yabe, Yutaka Akimoto, Hiroyuki Seki, Daisuke Uchida, Kazuyuki Matsumoto, Naoki Yamamoto, Shigeru Horiguchi, Hiroyuki Okada

Surgical endoscopy 30 ( 12 ) 5338 - 5344 2016.12

Language：English Publishing type：Research paper (scientific journal)

BACKGROUND AND AIMS: To evaluate the outcomes of management for biliary stricture (BS) after living donor liver transplantation (LDLT) using short-type double-balloon enteroscopy. METHODS: This study retrospectively evaluated 20 patients who underwent endoscopic retrograde cholangiography using short-type double-balloon enteroscopy (sDB-ERC) upon suspicion of BS after LDLT with hepaticojejunal (HJ) reconstruction at Okayama University Hospital. RESULTS: Scope insertion to the HJ site and sDB-ERC succeeded in 85 % (17/20) and 82.4 % (14/17) of patients, respectively. Of 14 patients who required treatment for BS, 11 were successfully treated using sDB-ERC, and 3 were successfully treated using sDB-ERC and rendezvous procedures. Adverse events occurred in 2.9 % of all sessions (2/68). After resolution of BS, 7 patients (50 %) experienced a recurrence. Of these, 6 (85.7 %) were treated with only balloon dilation, and 1 (14.3 %) was treated with both balloon dilation and stent deployment (P = 0.029). CONCLUSIONS: sDB-ERC is a useful procedure for diagnosis and treatment for BS after LDLT with HJ reconstruction. Balloon dilation combined with stent deployment might be recommended for definite resolution of BS.

PubMed

researchmap

Effectiveness and safety of peroral direct cholangioscopy using an ultraslim endoscope for the treatment of hepatolithiasis in patients with hepaticojejunostomy

Kazuyuki Matsumoto, Koichiro Tsutsumi, Hironari Kato, Naoki Yamamoto, Shigeru Horiguchi, Yutaka Akimoto, Daisuke Uchida, Takeshi Tomoda, Hiroyuki Okada

JOURNAL OF GASTROENTEROLOGY AND HEPATOLOGY 31 221 - 222 2016.11

　 PREV - NEXT 　

< MATSUMOTO Kazuyuki >

Papers - MATSUMOTO Kazuyuki