Publications by authors named "Keita Sasajima"

Aim: This study was aimed to clarify the effectiveness of conservative treatment without performing early colonoscopy and the indications for early colonoscopy in patients with colonic diverticular hemorrhage.

Methods: This retrospective study included 142 participants who were urgently hospitalized due to bloody stools and were diagnosed with colonic diverticular hemorrhage between April 2012 and December 2016. At the time of hospital visit, only when both shock based on vital signs and intestinal extravasation on abdominal contrast-enhanced computed tomography were observed, early colonoscopy was performed within 24 hours after hospitalization.

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Article Synopsis
  • * Imaging revealed diffuse pancreatic enlargement and narrowing of the main pancreatic duct, leading to a diagnosis of autoimmune pancreatitis (AIP) related to his ulcerative colitis.
  • * After treatment, both the AIP and ulcerative colitis improved without steroid use, and he has not experienced any recurrence of either condition since discharge, although his IgG4 levels are slightly elevated.
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New Japanese criteria for severity assessment in acute pancreatitis were introduced in October 2008. The new criteria are simpler than the previous ones, and are also expected to be more useful for the severity assessment. We retrospectively analyzed the clinical factors in our patients to predict prognosis, and evaluated the usefulness and limitations of the new criteria.

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A 45-year-old male active homosexual was given a diagnosis of HIV-1 and acute hepatitis B in August 2007. Since his liver function became rapidly impaired, anti-HBV therapy with oral administration of entecavir (ETV) was started, and resulted in a favorable outcome. However, serum concentration of HIV-RNA decreased by log 1.

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Background: The histological findings of GI lesions are based on light-microscopic examination of H&E-stained thin-slice specimens. Recently, a concept of optical biopsy has been advocated. A study of the observation of colorectal lesions using endocytoscopy to obtain real-time histological images in vivo during endoscopy was performed.

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Background: In the field of colorectal cancer, the presence of a nonstructural pattern in magnifying colonoscopy means that cancer involves the submucosal layer. Since en bloc EMR was developed, differentiation between mucosal and submucosal cancer is a critical issue in the management of gastric cancer. In this study, we evaluated the clinical meaning of a nonstructural pattern in magnifying gastroscopy.

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A catheter-type endomicroscope has been developed with a maximum magnifying power of 1100 times. Living cancer cells in the esophagus, stomach, and colon were successfully observed in high-resolution images. The "Endo-Cytoscopy system" (prototype,Olympus Optical, Co.

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