Accès ouvert
2026
article
OpenAlex
Mitsuru Okuno, Shinya Uemura, Tsuyoshi Mukai, Fumiya Kataoka et autres
Background and Objectives: EUS-guided fine-needle aspiration (EUS-FNA) using a 19-gauge FNA needle can safely obtain sufficient tissue samples for the evaluation of lymphadenopathy. FNB needles can also provide adequate tissue, and 22-gauge needles are generally easier to puncture than 19-gauge needles. This …
jp
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Accès ouvert
2025
article
OpenAlex
Mitsuru Okuno, Fumiya Kataoka, Tsuyoshi Mukai, Eiichi Tomita et autres
Carcinomas of the ampulla of Vater can cause biliary stricture and jaundice. Intraductal radiofrequency ablation (RFA) has recently been used to treat biliary neoplasms [ 1 ], and a short-length exposed tip RFA probe (11-mm; ELRA, STARmed, Goyang, Korea) has been developed …
jp
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Accès ouvert
2025
article
OpenAlex
Mitsuru Okuno, Fumiya Kataoka, Tsuyoshi Mukai, Eiichi Tomita et autres
Pancreatic drainage using a plastic stent is effective for treating pancreaticointestinal anastomotic strictures after pancreaticoduodenectomy. We report a case of troubleshooting for removal of a stent that migrated to the distal end of the main pancreatic duct (MPD) using a screw-type dilator …
jp
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2025
article
OpenAlex
Toshiaki Abe, Ryotaro Matsumoto, Shin Hamada, Tetsuya Takikawa et autres
Objectives: Alteration in plasma apolipoprotein A2 isoforms (apoA2-i) has been reported in patients with pancreatic cancer; however, data on apoA2-i in chronic pancreatitis (CP) remain limited. This study aimed to clarify the alteration in apoA2-i in patients with CP, focusing on its …
jp
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Accès ouvert
2025
article
OpenAlex
Mitsuru Okuno, Tsuyoshi Mukai, Fumiya Kataoka, Eiichi Tomita et autres
We report a case of intestinal fluid accumulation secondary to afferent loop syndrome, successfully treated via enteroscopic submucosal drainage. A 66-year-old man with a history of gastric resection and Roux-en-Y reconstruction for gastric cancer 6 years earlier presented with fever. Computed tomography …
jp
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Accès ouvert
2025
article
OpenAlex
Mitsuru Okuno, Fumiya Kataoka, Eiichi Tomita, Hidetoshi Matsunami et autres
Primary sclerosing cholangitis (PSC) can cause biliary strictures and cirrhosis. Although liver transplantation is curative for decompensated cirrhosis, PSC can relapse posttransplantation [ 1 ] [ 2 ]. Even though balloon dilatation is effective for biliary strictures [ 3 ], endoscopic retrograde …
jp
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Accès ouvert
2025
article
OpenAlex
Fumiya Kataoka, Mitsuru Okuno, Tsuyoshi Mukai, Eiichi Tomita et autres
Malignant hilar biliary obstruction (MHBO) can cause cholangitis in the right and left intrahepatic bile ducts (IHBDs) and requires bilateral drainage. Although transpapillary bilateral drainage is the gold standard treatment for MHBO, EUS-guided hepaticogastrostomy (EUS-HGS) is an effective alternative treatment when the …
jp
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2025
article
OpenAlex
Fumiya Kataoka, Mitsuru Okuno, Tsuyoshi Mukai, Atsushi Tagami et autres
BACKGROUND AND AIMS: Endoscopic retrograde cholangiopancreatography (ERCP), the standard procedure for common bile duct (CBD) stones (CBDS) removal, carries a risk of post-ERCP pancreatitis (PEP). We compared PEP-related factors between asymptomatic and symptomatic CBDS cases. METHODS: A retrospective cohort study was conducted …
jp
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Accès ouvert
2025
article
OpenAlex
Fumiya Kataoka, Takayuki Nakanishi, Shoichi Ichino, Makoto Kamei et autres
BACKGROUND: Juvenile polyps (JPs) are non-neoplastic polyps. In adults, JPs present with hematochezia in only approximately half the patients and are often found incidentally during endoscopic screening. JPs have no mucosal fascia at the tip, and spontaneous shedding and massive gastrointestinal hemorrhage …
jp
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Accès ouvert
2025
article
OpenAlex
Fumiya Kataoka, Mitsuru Okuno, Atsushi Tagami, Eiichi Tomita et autres
Gallstone pancreatitis necessitates emergency endoscopic removal of the responsible stone [ 1 ]. We report a case highlighting three significant clinical characteristics: 1) recurrent stone in the residual bile duct of the pancreatic head 13 years after choledochojejunostomy; 2) a challenging transpapillary …
jp
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Accès ouvert
2024
article
OpenAlex
Mitsuru Okuno, Fumiya Kataoka, Atsushi Tagami, Eiichi Tomita et autres
Bilateral stent placement results in better clinical palliation than unilateral placement for unresectable malignant hilar biliary obstruction [ 1 ]. Moreover, for simultaneous bilateral drainage, the stent-in-stent method with self-expandable metal stents (SEMSs) shows longer stent patency than side-by-side-placement [ 1 ] …
jp
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