Publications by authors named "Kengo Takimoto"

Article Synopsis
  • Gastrointestinal (GI) perforations can occur during endoscopic procedures, prompting a study to evaluate the effectiveness of polyglycolic acid (PGA) sheets combined with fibrin glue for closure.
  • The study reviewed medical records from 18 Japanese institutions between 2013 and 2018, analyzing cases of both intraoperative and delayed GI perforations treated with PGA sheeting.
  • Results showed that 91% of intraoperative cases and all delayed cases achieved successful closure, with median diet resumption times of 6 and 10 days respectively, indicating that PGA sheeting is a viable treatment option for GI perforations.
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Background: Data on endoscopic resection (ER) for superficial duodenal epithelial tumors (SDETs) are insufficient owing to their rarity. There are two main ER techniques for SDETs: endoscopic mucosal resection (EMR) and endoscopic submucosal dissection (ESD). In addition, modified EMR techniques, such as underwater EMR (UEMR) and cold polypectomy, are becoming popular.

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Background: Bleeding after endoscopic submucosal dissection (ESD) is a severe adverse event. Recent reports have described the efficacy of the endoscopic shielding method with polyglycolic acid (PGA) sheets and fibrin glue for the prevention of adverse events after ESD. The aim of the present study was to investigate whether the PGA shielding method provides additional benefit in preventing post-ESD bleeding compared with standard care.

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A female in her 70s underwent esophagogastroduodenoscopy (EGD) for screening, and a 0-IIa lesion measuring approximately 15 mm was detected in the descending portion of the duodenum. Due to the malignant potency of the lesion, endoscopic submucosal dissection (ESD) was performed. Microperforation occurred during ESD.

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Rectourethral fistulais a relatively rare complication of radical prostatectomy but is extremely difficult to treat. We report a case with post-laparoscopic radical prostatectomy rectourethral fistula, treated with only endoscopic shielding.A 75-year-old man had undergone laparoscopic radical prostatectomy for prostate cancer, cT2cN0M0.

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Article Synopsis
  • - The polyglycolic acid (PGA) fabric and fibrin glue (P-F method) have been shown to prevent complications after endoscopic submucosal dissection (ESD) in recent studies, but their effectiveness and mechanisms are not fully understood.
  • - In experiments using a canine stomach model, the P-F method significantly reduced ulcer perforation and damage compared to untreated control groups, with improved granulation tissue formation and mucosal regeneration observed over time.
  • - Culture experiments revealed that while fibroblast proliferation was higher on PGA, fibrin glue provided protection against hydrochloric acid, demonstrating that the P-F method effectively combines protective and regenerative properties for better tissue repair after ESD.
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Many medical institutions in Japan perform endoscopic mucosal dissection (ESD) to treat early gastric cancer. Perforations can occur during ESD, and clipping has been reported as useful for treating small pinhole perforations. However, it is often difficult to close postoperative perforations because they usually have large diameters, and the muscle layer around the perforated region is often fragile, so additional open surgery is the only currently used method to treat large perforations and delayed perforations.

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Delayed perforation after duodenal endoscopic submucosal dissection (ESD) occurs at a high rate because the duodenal wall is very thin and the artificial ulcer after resection is exposed to bile and pancreatic juice. We investigated the application of the combination of a polyglycolic acid (PGA) sheet and fibrin glue. PGA sheets comprise materials widely used in surgery for absorbable thread.

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Background And Aim: To verify the current status in Japan on endoscopic diagnosis of superficial non-ampullary duodenal epithelial tumors (SNADET) by a multicenter case series through a questionnaire survey.

Methods: Nine endoscopists and a surgeon responded to a questionnaire on endoscopic diagnosis of SNADET. The subjects of this survey were histologically confirmed SNADET that were endoscopically or surgically resected from 2007 to 2012.

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Aim: Although the treatment of early gastric cancer with endoscopic submucosal dissection (ESD) has been widely carried out, a standardized method of sedation for ESD has not been established. The purpose of the present study was to evaluate the efficacy and safety of sedation with dexmedetomidine (DEX).

Methods: We conducted a randomized study involving 90 patients with gastric tumors who were intended to be treated with ESD.

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We present a 68 years old woman who was referred to our department due to impaired liver function. Hepatitis A IgM antibody and anti-nuclear antibody were positive, IgG, and gamma-globulin were elevated. Percutaneous liver biopsy was performed and autoimmune hepatitis was suspected pathologically.

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We report here the case of a 63-year-old man who had a diffuse large B-cell lymphoma associated with hemophagocytic syndrome (HPS). The lymphoma involved the spleen, bilateral adrenal glands, and paraaortic lymph nodes of the abdomen. In both the bone marrow and lymph nodes, hemophagocytosis was evident, and the laboratory findings were consistent with HPS.

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We present the case of a 67-year-old man with primary malignant fibrous histiocytoma (MFH) of the diaphragm. He was admitted to our hospital with anorexia and loss of body weight. High serum levels of AST, ALT, ALP and gamma-GTP were observed.

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