Endoscopic features with associated histological and molecular alterations in serrated polyps with dysplasia: Retrospective analysis of a tertiary case series.

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.

Diffuse xanthoma in early esophageal cancer: A case report.

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.

Endoscopic features and associated histology of an basaloid squamous cell carcinoma of the esophagus at the very early stage.

Background: 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.

Validation study for development of the Japan NBI Expert Team classification of colorectal lesions.

Background 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.

Correlation of endoscopic images and histological findings of a high grade dysplasia developed in a gastric xanthoma.

Gastric 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.

Use of an abdominal obstetric binder in colonoscopy: A randomized, prospective trial.

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.

A modified endoscopic submucosal dissection for a superficial hypopharyngeal cancer: a case report and technical discussion.

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.

A superficial esophageal cancer in an epiphrenic diverticulum treated by endoscopic submucosal dissection.

Background: 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.

Endoscopic Submucosal Dissection of Superficial Esophageal Neoplasms Is Feasible and Not Riskier for Patients with Liver Cirrhosis.

Background: 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 Assisted by an Overtube with a Traction Forceps: An Animal Study.

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).