Publications by authors named "Toshiya Otake"

Background And Aim: Multipolar radiofrequency ablation (RFA) is feasible for the treatment of hepatocellular carcinoma (HCC) for which a large ablative area is planned, and it imposes a light physical burden on patients. Multipolar RFA via the percutaneous approach is performed in the majority of cases, but the efficacy of multipolar RFA with a laparoscopic approach has rarely been studied. This study aimed to evaluate the efficacy and safety of multipolar laparoscopic RFA (LRA) for localized HCC over the short term.

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A 77-year-old man with hepatocellular carcinoma was admitted to our institution. Computed tomography revealed two nodules, one at the surface and one within the liver, ≤3 cm in diameter. We performed laparoscopic radiofrequency ablation using a bipolar system with a "no-touch ablation" procedure using multiple applicators for insertion, not into the tumor directly, but to the perimeter of the tumor.

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Background And Aim: Existing reusable endoscopic clip devices have some problems regarding opening the device and precise control of clip application. The aim of the present study was to evaluate reusable clip devices for endoscopic treatment.

Methods: Ability to close a large defect and grip force were evaluated using ex-vivo porcine colon.

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Although the clinical benefits of antiviral treatment in the management of membranous nephropathy (MN) in patients with chronic hepatitis B virus (HBV) infection have been suggested, it should be evaluated more carefully. In this report, we present two cases with quiescent HBV who were administered lamivudine for either the initial treatment of MN or to control the reactivation of HBV during treatment with corticosteroids. No clinical benefit of lamivudine as an initial treatment was observed in one patient, which obliged us to commence administration of prednisolone (PSL).

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We describe a case of interspousal transmission of hepatitis C virus (HCV) infection after 30 years of marriage which was confirmed by gene analysis. A 60-year-old man was referred to our hospital because of severe hepatic dysfunction. Laboratory findings showed that HCV-Ab titer and qualitative Amplicor HCV were both positive in low levels.

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