Longer withdrawal time is not associated with increased patient discomfort in colonoscopy: a retrospective observational study.

Purpose: Withdrawal time of sufficient length is a quality indicator for colonoscopies. Nonetheless, whether extending the withdrawal time contributes to patient discomfort remains unknown. This study aimed to clarify the relationship between colonoscopy withdrawal time and patient discomfort.

Recent trends in the prevalence and distribution of colonic diverticula in Japan evaluated using computed tomography colonography.

Background: Computed tomography colonography (CTC) may be superior to colonoscopy and barium enema for detecting diverticula. However, few studies have used CTC to diagnose diverticula.

Aim: To evaluate the current prevalence and distribution of colonic diverticula in Japan using CTC.

Inverse time trends of peptic ulcer and reflux esophagitis show significant association with reduced prevalence of infection.

Introduction: Recent prevalence and trends of gastric/duodenal ulcer (GU/DU) and reflux esophagitis (RE) are inadequate.

Methods: We reviewed the records of consecutive 211,347 general population subjects from 1991 to 2015.

Results: During the 25 years, the prevalence of GU and DU has gradually decreased (from 3.

Causative factors of discomfort in esophagogastroduodenoscopy: A large-scale cross-sectional study.

Background: It is important to reduce patient discomfort in esophagogastroduodenoscopy. Remedial measures can be taken to alleviate discomfort if the causative factors are determined; however, all the factors have not been elucidated yet.

Aim: To clearly determine the factors influencing discomfort in transoral esophagogastroduodenoscopy using a large-size cross-sectional study with readily available data.

Multiple White and Flat Elevated Lesions Observed in the Stomach: A Prospective Study of Clinical Characteristics and Risk Factors.

Objective Multiple white and flat elevated lesions (MWFLs) observed in the stomach have only been presented in abstracts at academic conferences over the last decade; therefore, relatively little is known about these lesions. Our aim was to prospectively clarify the clinical characteristics of MWFLs, to identify their risk factors and to retrospectively evaluate the clinical progression of these lesions. Methods A prospective analysis of clinical characteristics and risk factors was conducted in participants who underwent esophagogastroduodenoscopic screening at our hospital.

Diagnostic Performance and Patient Acceptance of Reduced-Laxative CT Colonography for the Detection of Polypoid and Non-Polypoid Neoplasms: A Multicenter Prospective Trial.

Purpose To evaluate the diagnostic accuracy and patient acceptance of reduced-laxative computed tomographic (CT) colonography without computer-aided detection (CAD) for the detection of colorectal polypoid and non-polypoid neoplasms in a population with a positive recent fecal immunochemical test (FIT). Materials and Methods Institutional review board approval and written informed consent were obtained. This multicenter prospective trial enrolled patients who had positive FIT results.

Emergency carotid artery stent placement in patients with acute ischemic stroke.

Background And Purpose: An effective intervention has not yet been established for patients with acute ischemic stroke who present with serious neurologic symptoms due to occlusion or a high-grade stenosis of the internal carotid artery (ICA). The aim of our retrospective study was to investigate the feasibility, safety, and efficacy of emergency carotid artery stent placement to improve neurologic symptoms and clinical outcome.

Methods: Of 896 consecutive patients with acute ischemic stroke who were admitted to our institution within 7 days of onset from July 2000 to June 2003, 17 patients (1.