Wataru Hamamoto
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Explore the profile of Wataru Hamamoto including associated specialties, affiliations and a list of published articles.
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20
Citations
75
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Recent Articles
11.
Takeda Y, Matsumoto K, Onoyama T, Yamashita T, Koda H, Hamamoto W, et al.
Diagnostics (Basel)
. 2022 Mar;
12(3).
PMID: 35328297
The risk of malignant transformation of intraductal papillary mucinous neoplasm (IPMN) is presently assessed using imaging, which remains unsatisfactory. Given the high viscosity of pancreatic juice, pancreatic juice cytology (PJC)...
12.
Sakamoto Y, Takeda Y, Kawahara S, Shimosaka T, Hamamoto W, Koda H, et al.
Intern Med
. 2022 Feb;
61(17):2613-2617.
PMID: 35185053
A 65-year-old man had a history of cholecystectomy and treatment for cholelithiasis with a common bile duct incision. Owing to frequent cholangitis, he underwent choledochojejunostomy. Twenty years after the surgery,...
13.
Onoyama T, Hamamoto W, Sakamoto Y, Kawahara S, Yamashita T, Koda H, et al.
J Clin Med
. 2021 Feb;
10(4).
PMID: 33562535
Background: Peroral cholangioscopy (POCS)-guided forceps mapping biopsy (FMB) is a method for the accurate preoperative identification of the extent of the disease of biliary tract cancer (BTC). However, the diagnostic...
14.
Onoyama T, Hamamoto W, Sakamoto Y, Kawahara S, Yamashita T, Koda H, et al.
JGH Open
. 2020 Dec;
4(6):1119-1127.
PMID: 33319046
Background And Aim: Endoscopic retrograde cholangiopancreatography (ERCP)-related tissue acquisition, including fluoroscopy-guided forceps biopsy (F-FB), is a common technique in diagnosing indeterminate biliary lesions. Recently, peroral cholangioscopy (POCS) and POCS-guided forceps...
15.
Takeda Y, Onoyama T, Sakamoto Y, Kawahara S, Hamamoto W, Koda H, et al.
Yonago Acta Med
. 2020 Nov;
63(4):372-375.
PMID: 33253336
We report the case of a 68-year-old woman who had abdominal pain and slightly elevated biliary enzymes. Magnetic resonance cholangiopancreatography detected biliary duct stenosis, while contrast-enhanced magnetic resonance imaging showed...
16.
Onoyama T, Takeda Y, Kawata S, Kurumi H, Koda H, Yamashita T, et al.
Ann Transl Med
. 2020 Nov;
8(17):1073.
PMID: 33145292
Background: Peroral cholangioscopy (POCS)-guided forceps biopsy is a method for diagnosing indeterminate biliary strictures and for the preoperative identification of the exact perihilar and distal margins of biliary tract cancer...
17.
Onoyama T, Takeda Y, Yamashita T, Hamamoto W, Sakamoto Y, Koda H, et al.
World J Gastroenterol
. 2020 Jan;
26(3):353-365.
PMID: 31988594
Background: Programmed cell death-1 (PD-1) inhibitor has been indicated for many types of malignancies. However, these inhibitors also cause immune-related adverse events. Hepatobiliary disorder is a phenotype of immune-related adverse...
18.
Mishiro T, Kishimoto K, Hamamoto W, Cho Y, Mikami H, Ikuta Y, et al.
Intern Med
. 2019 Nov;
58(22):3213-3217.
PMID: 31735735
Objective Acute cholangitis is occasionally life-threatening and requires immediate treatment. For the management of acute cases, globally accepted diagnostic criteria and the use of severity grading, as defined in the...
19.
Kishimoto K, Mishiro T, Mikami H, Yamashita N, Hara K, Hamamoto W, et al.
Case Rep Gastroenterol
. 2019 Aug;
13(2):299-304.
PMID: 31427912
A diagnosis of tuberculous peritonitis (TBP) is difficult because of nonspecific manifestation and limited effectiveness of conventional diagnostic tools. Recently, the usability of measurement of ascitic adenosine deaminase (ADA) was...
20.
Kato M, Onoyama T, Takeda Y, Kawata S, Kurumi H, Koda H, et al.
J Clin Med
. 2019 Jun;
8(6).
PMID: 31248095
Background: Peroral cholangioscopy (POCS) has become a widely-used technique in diagnosing indeterminate biliary strictures, enabling optical viewing of the biliary system and targeted biopsies under direct vision. The diagnostic utility...