Toshiyuki Mitsuyama
Kansai Medical University
AnatomyInternal medicineRadiologyBalloonSurgeryPathologyImmunologyImmunohistochemistryPancreatitisEndoscopeAutoimmune pancreatitisEndoscopic retrograde cholangiopancreatographyCD19Bile ductPancreatic ductPancreatic cancerIgG4-related diseaseRegulatory B cellsIn patientDouble balloon endoscopyMedicineComplicationAnastomosis
41Publications
8H-index
302Citations
Publications 41
Newest
#1Takashi Ito (Kansai Medical University)H-Index: 4
#2Masaaki Shimatani (Kansai Medical University)H-Index: 17
Last. Makoto Naganuma (Kansai Medical University)H-Index: 36
view all 7 authors...
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#1Makoto Takaoka (Kansai Medical University)H-Index: 24
#2Masaaki Shimatani (Kansai Medical University)H-Index: 17
Last. Makoto Naganuma (Kansai Medical University)H-Index: 36
view all 13 authors...
Self-expandable metallic stents (SEMSs) are widely used for malignant biliary stricture (MBS). Acute pancreatitis is an early complication following SEMS placement. In the present case, the patient developed severe acute pancreatitis after SEMS placement for MBS because of metastatic lymph nodes. Endoscopic retrograde cholangiopancreatography, endoscopic sphincterotomy and an endoscopic nasobiliary drainage tube placement were performed. After seven days, an uncovered SEMS was placed; however, s...
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#1Toshiyuki Mitsuyama (Kansai Medical University)H-Index: 8
#2Masaaki Shimatani (Kansai Medical University)H-Index: 17
Last. Makoto Naganuma (Kansai Medical University)H-Index: 36
view all 3 authors...
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#1Masaaki ShimataniH-Index: 17
Last. Kazuichi OkazakiH-Index: 85
view all 11 authors...
Endoscopic retrograde cholangiopancreatography (ERCP) is an endoscopic modality established for diagnosis and treatment of pancreaticobiliary diseases. However ERCP in patients with surgically altered anatomy (SAA) has been difficult, and more invasive therapies have been primarily selected. The development of balloon assisted endoscopes (BAEs) innovatively facilitated ERCP in such patients. Recent advances of BAEs and other devices greatly contributed to increasing success of ERCP using BAEs (B...
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#1Makoto Takaoka (Kansai Medical University)H-Index: 24
#2Masaaki Shimatani (Kansai Medical University)H-Index: 17
Last. Makoto Naganuma (Kansai Medical University)H-Index: 3
view all 11 authors...
Background and Aim A self-expandable metallic stent (SEMS) is commonly used for biliary stricture caused by pancreatic cancer. Covered SEMS may obstruct the cystic duct, causing acute cholecystitis. This study aimed to determine the outcomes of using a half-covered SEMS with an offset covered portion for preventing cystic duct obstruction. Methods Among 80 patients with half-covered SEMS placement for the treatment of pancreatic cancer-induced distal biliary stricture, 74 were followed up. The h...
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#1Toshiyuki Mitsuyama (Kansai Medical University)H-Index: 8
#2Takashi Ito (Kansai Medical University)H-Index: 4
Last. Masaaki Shimatani (Kansai Medical University)H-Index: 17
view all 3 authors...
1 CitationsSource
#1Tsukasa Ikeura (Kansai Medical University)H-Index: 19
#2Yuichi Hori (Kansai Medical University)H-Index: 1
Last. Kazuichi Okazaki (Kansai Medical University)H-Index: 85
view all 13 authors...
BACKGROUND/AIM We evaluated urinary levels of porphyrin metabolites, such as uroporphyrin (UP) and coproporphyrin (CP), after 5-Aminolevulinic acid (ALA) administration in patients with or without pancreatic cancer (PaC). PATIENTS AND METHODS Sixty-seven subjects with PaC, 11 with pancreatitis, and 9 with normal pancreas (NP) were enrolled. Urine samples from all subjects were collected prior to ALA administration and at more than 4 hours after ALA administration. We measured the urinary levels ...
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#1Takashi Ito (Kansai Medical University)H-Index: 4
#2Tsukasa Ikeura (Kansai Medical University)H-Index: 19
Last. Kazuichi Okazaki (Kansai Medical University)H-Index: 85
view all 9 authors...
Abstract Objectives It is important for diagnosing early chronic pancreatitis (CP), which may be improved by therapeutic intervention. We aimed to examine the pancreatic ductal changes on magnetic resonance cholangiopancreatography (MRCP) in patients with early CP defined by the Japanese Diagnostic Criteria. Methods This retrospective study included patients suspected early CP and performed both endoscopic ultrasonography (EUS) and MRCP from January 2010 to August 2018. We assessed the diameter ...
1 CitationsSource
#1Mitsuo Tokuhara (Kansai Medical University)H-Index: 3
#2Masaaki Shimatani (Kansai Medical University)H-Index: 17
Last. Kazuichi Okazaki (Kansai Medical University)H-Index: 85
view all 12 authors...
BACKGROUND AND AIMS: Endoscopic retrograde cholangiopancreatography (ERCP) using balloon assisted endoscope (BAE) such as double balloon endoscope (DBE) is even effective for patients with surgically altered anatomy. Yet comprehensive studies on complications of ERCP using BAE (BAE-ERCP) have not been made. We analyzed the characteristics and the causes of complications of ERCP using DBE (DB-ERCP) procedures and aimed to suggest effective managements. METHODS: 1,576 procedures of DB-ERCP in 716 ...
2 CitationsSource
#1Mitsuaki Ishida (Kansai Medical University)H-Index: 6
#2Kimiaki Okano (Kansai Medical University)H-Index: 4
Last. Koji Tsuta (Kansai Medical University)H-Index: 17
view all 11 authors...
Neuroendocrine carcinoma (NEC) in the extrahepatic bile duct is extremely rare and clinically aggressive. Cytological examination of bile and/or bile duct brushing specimens plays an important role in the diagnosis of carcinoma of the extrahepatic bile duct, but only a few articles have described the cytological features of NEC in this area. Thus, we retrospectively analyzed the cytological features of NEC in bile and/or bile duct brushing specimens. Patients with a histopathological diagnosis o...
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