Publications by authors named "Kana Matsuura"

Implantation cyst is often reported to be a delayed complication after colorectal surgery. This report presents a 70-year-old man undergoing gastrectomy 33 years earlier for an acute gastric ulcer. His endoscopic finding showed a submucosal tumor about 20 mm in diameter at the gastro-jejunal anastomosis.

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Rectal prolapse is typically treated surgically, and internal therapy has not been reported. We encountered a case of rectal prolapse that improved with an over-the-scope clip (OTSC) system. An 81-year-old woman complaining of anorectal pain underwent colonoscopy, and rectal prolapse was observed prior to colonoscopy.

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Background/aim: Circulating tumor cells (CTCs) may have an important role in metastasis. CTC clusters, which contain fibroblasts, indicate poor prognosis. In the present study, we used our malignant lymphoma metastatic mouse model to compare the effect of a choline-deficient-diet (CDD) and the control diet (CD) on fibroblasts in CTCs.

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Purpose: Topical ketoprofen patch has been developed to reduce the risk of systemic adverse effects such as gastrointestinal injury and renal toxicity.

Materials And Methods: We reported here a case of lower intestinal bleeding associated with chronic excessive use of topical ketoprofen patch in an elderly patient.

Results: A 74-year-old female visited to the outpatient clinic of the Gifu University Hospital and admitted thereafter.

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A boy in his early teens visited our hospital with chief complaints of hematemesis and tarry stools. Upper gastrointestinal endoscopy identified a hemorrhagic duodenal ulcer, for which hemostasis was performed using a clip. Proton pump inhibitor (PPI) administration diminished the ulcer but relapse occurred after PPI discontinuation.

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Aims: Hepatitis B virus genotype D (HBV/D) is rare in Japan, and has been shown to circulate in Ehime prefecture in western Japan. HBV/D is suspected to have been transferred into Ehime from Russia as a result of the Japanese-Russian War. This study examined the current geographic spread and infectious route for HBV/D in Ehime.

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Background: Esophageal varices (EV), one feature of portal hypertension, have been regarded as a late complication of liver diseases. However, accumulating evidence indicates that EV sometimes develop early during the course of primary biliary cirrhosis (PBC). The prognosis is usually poorer for patients with symptomatic PBC than for those with asymptomatic PBC.

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Objective: Hepatitis B virus (HBV) genotypes B and C are predominant in Japan. Previously, we reported that approximately 9% of HBV carriers in the Ehime area of western Japan were infected with genotype D (HBV/D) and their sequences closely related. Recently, serum samples from 3 patients with chronic HBV/D infections living in Tokyo and the surrounding area became available for testing.

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A 59-year-old man developed acute hepatitis with reactivated hepatitis B virus (HBV) following administration of rituximab (anti-CD20 monoclonal antibody). The patient was diagnosed with malignant lymphoma in 1998, and virus marker testing indicated HBV surface antigen (HBsAg)-negative and anti-HBs antibody (anti-HBs)-positive results when chemotherapy including rituximab was started. Levels of aminotransferases were elevated, and HBsAg results turned positive.

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The major hepatitis B virus (HBV) genotypes in Japan are B and C. HBV genotype D (HBV/D), however, is widespread in a small area of Western Japan, where the Gianotti-Crosti syndrome caused by HBV subtype ayw, which is suspected to be HBV/D, was endemic in the 1970s. The aim of the study was to elucidate its origin, time of transmission, and spread in this area.

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Objective: Genotypes B and C are the prevalent hepatitis B virus (HBV) genotypes in eastern Asia. Although very rare in this region of the world, genotype D was found to be prevalent in a small area of western Japan. In this study, we confirm the frequency and clinical significance of co-infection with different genotypes among patients from that area infected with genotype D.

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