Background: Serrated polyps are incompletely understood lesions and include serrated sessile lesion (SSL) without or with dysplasia and traditional serrated adenoma (TSA).
Aims: We investigated prevalence and characteristics of serrated lesions, especially SSL with dysplasia (mixed polyps).
Methods: This retrospective study analyzed data from consecutive patients referred for colonoscopy at a tertiary care center.
Background: Gastrointestinal xanthomas are asymptomatic and infrequent non-neoplastic lesions that commonly occur in the stomach with -associated gastritis and rarely in the esophagus. To date, there have been no reports of esophageal xanthoma combined with esophageal cancer. Herein, we present the first case in the literature of a diffuse xanthoma complicated with early esophageal cancer.
View Article and Find Full Text PDFBackground: Basaloid squamous cell carcinoma of the esophagus (BSCCE) is generally detected at advanced stage and the prognosis is poorer than advanced conventional esophageal squamous cell carcinoma. Therefore, early detection is a critical to improve patients' survival. However, only a few cases of early BSCCE have been reported and the endoscopic features of early BSCCE are not well described.
View Article and Find Full Text PDFNeurofibromatosis type 1 (NF-1) is commonly associated with benign or malignant tumors in both the central and peripheral nervous systems. However, rare cases of NF-1-associated multiple rectal neuroendocrine tumors have been reported. This report describes a case of a 39 year old female with NF-1 and intermittent hematochezia as a primary symptom.
View Article and Find Full Text PDFBackground And Aim: The Japan narrow-band imaging (NBI) Expert Team (JNET) was organized to unify four previous magnifying NBI classifications (the Sano, Hiroshima, Showa, and Jikei classifications). The JNET working group created criteria (referred to as the NBI scale) for evaluation of vessel pattern (VP) and surface pattern (SP). We conducted a multicenter validation study of the NBI scale to develop the JNET classification of colorectal lesions.
View Article and Find Full Text PDFGastric neoplasia developed in a xanthoma is very rare. We herein report a high grade dysplasia (HGD) arising in a gastric xanthoma removed by endoscopic submucosal dissection (ESD). A 57-year-old man was referred to our hospital for removal of rectal polyps.
View Article and Find Full Text PDFJ Gastroenterol Hepatol
July 2018
Background And Aims: Various methods have been reported as aids to cecal intubation. This study aimed to prospectively investigate whether an abdominal obstetric binder (AOB) used during pregnancy and attached to the patients' abdomen during colonoscopy could facilitate effective colonoscopic insertion.
Methods: This was a prospective study of 451 consecutive outpatient colonoscopies performed by a single experienced endoscopist.
Background: Adequate working space and a clear view for the dissected lesion are crucial for endoscopic submucosal dissection (ESD). Pharyngeal ESD requires that an otorhinolaryngologist creates working space by lifting the larynx with a curved laryngoscope. However, many countries do not have this kind of curved laryngoscope, and the devices could interfere with endoscope because of the narrow space of the pharynx.
View Article and Find Full Text PDFBackground: We report a unique case of a superficial esophageal cancer arising in a single diverticulum, diagnosed with magnifying image-enhanced endoscopy and then successfully treated by endoscopic submucosal dissection (ESD).
Case Presentation: A 66-year-old man with alcohol-related liver injury visited our hospital for endoscopy for investigation of varix. Esophagogastroduodenoscopy showed no varix but a large epiphrenic diverticulum with an area of fainted redness just above the esophagogastric junction.
Background: The optimal operative process of esophageal endoscopic submucosal dissection (ESD), especially for the beginners, is not established. In this study, the clip-with-line method, the tunneling method and the conventional method for esophageal ESD were compared in a training course on live pigs.
Methods: 15 trainee endoscopists were randomized into three groups, the clip-with-line method group, the tunneling method group, and the conventional method group.
Achalasia is generally accepted as a condition associated with an increased risk for developing esophageal squamous cell carcinoma. In our paper, we introduced an achalasia patient combined with synchronous early esophageal neoplasms. We performed a combination of concurrent endoscopic submucosal dissection (ESD) and peroral endoscopic myotomy (POEM).
View Article and Find Full Text PDFBackground: Esophageal endoscopic submucosal dissection (ESD) has rarely been reported for the treatment of cirrhotic patients.
Aim: To report the results of ESD treatment of superficial esophageal neoplasms (SENs) for cirrhotic patients.
Methods: Forty patients with 50 consecutive SENs undergoing 46 sessions of ESD were retrospectively reviewed.
Esophageal endoscopic submucosal dissection (ESD) is technically difficult. To make it safer, we developed a novel method using overtube with a traction forceps (OTF) for countertraction during submucosal dissection. We conducted an ex vivo animal study and compared the clinical outcomes between OTF-ESD and conventional method (C-ESD).
View Article and Find Full Text PDFMany clinical studies on narrow-band imaging (NBI) magnifying endoscopy classifications advocated so far in Japan (Sano, Hiroshima, Showa, and Jikei classifications) have reported the usefulness of NBI magnifying endoscopy for qualitative and quantitative diagnosis of colorectal lesions. However, discussions at professional meetings have raised issues such as: (i) the presence of multiple terms for the same or similar findings; (ii) the necessity of including surface patterns in magnifying endoscopic classifications; and (iii) differences in the NBI findings in elevated and superficial lesions. To resolve these problems, the Japan NBI Expert Team (JNET) was constituted with the aim of establishing a universal NBI magnifying endoscopic classification for colorectal tumors (JNET classification) in 2011.
View Article and Find Full Text PDFIntravenous propofol can provide a superior quality of sedation compared to standard sedation for upper gastrointestinal endoscopy. However, the utility of propofol sedation for the endoscopic early detection of superficial pharyngeal and esophageal squamous cell carcinoma has not been investigated. In a multicenter, prospective trial, 255 patients with esophageal squamous cell carcinomas (ESCCs) were assigned to receive propofol sedation or no sedation according to their own willingness.
View Article and Find Full Text PDFBackground And Aims: Endoscopic submucosal dissection (ESD) is a prolonged procedure with serious adverse events. The clip with line traction method was reported to improve ESD. However, there was no comparison with conventional ESD especially for trainees.
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