Hirotaka Ohara
Nagoya City University
RadiologyEndocrinologyMajor duodenal papillaSurgeryPathologyPancreatitisPancreatic diseaseCommon bile ductAutoimmune pancreatitisStentPancreasStomachBile ductPancreatic ductPancreatic cancerPrimary sclerosing cholangitisHepatologyMedicineBiologyGastroenterology
241Publications
42H-index
7,010Citations
Publications 240
Newest
#1Yasuki Hori (Nagoya City University)H-Index: 12
#2Yuka Ichino (Nagoya City University)
Last. Hirotaka Ohara (Nagoya City University)H-Index: 42
view all 14 authors...
Endoscopic pancreatic stenting is used to prevent main pancreatic duct obstruction and relieve painful symptoms of chronic pancreatitis. However, the stent typically needs to be exchanged and the rate of adverse events is high. Few studies have evaluated the effect of stent shape on those outcomes. We evaluated the adverse events, stent patency, and total medical cost within 90 days of patients who received an 8.5 French (Fr) physiologically shaped pancreatic stent by comparing these features wi...
Source
#1Takahiro Nakazawa (Nagoya City University)H-Index: 29
#2Terumi KamisawaH-Index: 60
Last. Tosiaki Unno (Tohoku University)
view all 16 authors...
Background Several years have passed since the clinical diagnostic criteria for IgG4-related sclerosing cholangitis 2012 were published. New findings and knowledge have accumulated since then. Methods The Research Committees for IgG4-related Diseases and for Intractable Diseases of the Liver and Biliary Tract in association with the Ministry of Health, Labor and Welfare of Japan and the Japan Biliary Association, have established a working group consisting of researchers specializing in IgG4-SC ...
Source
#1Hajime Tanaka (Nagoya City University)H-Index: 11
#2Sivagami Gunasekaran (Nagoya City University)H-Index: 1
Last. Hiroyuki Tsuda (Nagoya City University)H-Index: 53
view all 7 authors...
2 CitationsSource
#1Katsuyuki Miyabe (Nagoya City University)H-Index: 18
#2Kenji NotoharaH-Index: 37
Last. Hiromi Kataoka (Nagoya City University)H-Index: 28
view all 14 authors...
An 84-year-old man was admitted with epigastralgia. Computed tomography showed contrast-enhanced wall thickness in the cystic duct. An endoscopic examination revealed short irregular stricture in the cystic duct, and per-oral cholangioscopy revealed a reddish papillary tumor at the stricture site. Surgical resection revealed high-grade biliary intraepithelial neoplasia (BilIN) at the stricture site of the cystic duct. To our knowledge, this is the first case of a solitary high-grade BilIN epithe...
Source
#1Hiroyasu Akatsu (Nagoya City University)H-Index: 42
#2Toshie Manabe (Jichi Medical University)H-Index: 10
Last. Takayuki YamamotoH-Index: 33
view all 15 authors...
Background Vitamins and minerals are routinely administered by total parenteral nutrition (TPN). However, in Japan, adjustments in iron dosage are difficult because blended mineral preparations are often used. It is therefore unclear whether the iron content is appropriate in cases of long-term TPN. The aim of the study was to assess the influence of iron administration by long-term TPN on iron deposition in post-mortem liver samples isolated from older deceased patients. Methods Liver tissues w...
Source
#1Kensuke KubotaH-Index: 30
#2Terumi KamisawaH-Index: 60
Last. Tsutomu ChibaH-Index: 81
view all 25 authors...
Source
#1Asako Matsushima (Nagoya City University)H-Index: 15
#2Shinichiro Shibata (PHRI: Public Health Research Institute)H-Index: 8
Last. Hirotaka Ohara (Nagoya City University)H-Index: 42
view all 3 authors...
Source
#1Atsushi Masamune (Tohoku University)H-Index: 53
#2Atsushi Irisawa (Dokkyo Medical University)H-Index: 7
Last. Kazuichi Okazaki (Kansai Medical University)H-Index: 68
view all 24 authors...
2 CitationsSource
#1Katsuyuki Miyabe (Nagoya City University)H-Index: 18
#2Kenji NotoharaH-Index: 37
Last. Hiromi Kataoka (Nagoya City University)H-Index: 28
view all 14 authors...
: A 70-year-old man was admitted to our hospital due to elevated levels of hepatobiliary and pancreatic enzymes. Computed tomography showed contrast-enhanced mucosal hypertrophy from the duodenal papilla to the distal bile duct. Endoscopic examinations revealed a laterally spreading granular tumor and ampullary swelling. After surgical resection, an examination revealed well-differentiated adenocarcinoma of the ampulla with tubular adenoma spreading from the distal common bile duct to the second...
Source
#1Itaru Naitoh (Nagoya City University)H-Index: 19
#2Takahiro Nakazawa (Nagoya City University)H-Index: 29
Last. Hirotaka Ohara (Nagoya City University)H-Index: 42
view all 3 authors...
Source