Kohei Takizawa

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On the other hand, because esophageal stenosis is almost inevitable after the removal of subcircumferential and cir-cumferential lesions, esophageal wall perforation during endoscopy and endoscopic balloon dilatation for the allevi-ation of stenosis is of particular concern in some cases [4]. Here we present a case where conventional endoclip closure of a(More)
The feasibility of full-spectrum endoscopy (FUSE) esophagogastroduodenoscopy (EGD), providing a 245-degree field of view with double imagers on the front and left side of the endoscope was evaluated. Twenty-one healthy individuals (15 male, median age, 35 years) underwent upper gastrointestinal screening using FUSE-EGD. The primary end point was the rate of(More)
BACKGROUND & AIMS Some patients develop multiple squamous cell carcinomas (SCCs) in the upper aerodigestive tract, attributed to field cancerization; alcohol consumption has been associated with this process. We examined the association between multiple areas of dysplastic squamous epithelium with the development of SCC of the esophagus or head and neck(More)
BACKGROUND Pathologic evidence of biliary diseases can be obtained from cytology in addition to endoscopic retrograde cholangiopancreatography (ERCP); however, the diagnostic effectiveness is not satisfactory. STUDY AIM This retrospective, single-center study evaluated the efficacy of various sampling methods for the cytologic diagnosis of bile duct(More)
The stenting strategy has been discussed in cases with unresectable hilar bile duct cancer (HBDC). We describe here a case of HBDC, 4 cm in size, invading the right portal vein and hepatic artery, which was only treated with repeated metallic stent placement, and the patient survived for a long period (51 months). Against Bismuth type-IV hilar biliary(More)
Metallic stent migration is a well-known complication which cannot always be managed by removal or repositioning, especially in case of uncovered stent. We report a patient who developed obstructive jaundice due to migration of an expandable metallic stent (EMS) inserted in the lower bile duct. Trimming of the EMS using argon plasma was performed, with the(More)
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