The opossum esophagus contains only smooth muscle in the distal two-thirds; it can be used to study autonomic control of esophageal smooth muscle. Three different preparations of opossum esophagus were used; the esophagus in vivo, the isolated whole esophagus, and isolated strips of the three layers of esophageal smooth muscle. Responses were examined to localized distension and to electrical s...

OBJECTIVE The authors reported the feasibility and safety of thoracoscopic approach for resection of the esophagus in two patients with diffuse corrosive esophageal stricture. BACKGROUND The unrelenting corrosive strictures of esophagus merit esophageal substitution. Because of the risk of complications in the retained esophagus, such as malignancy, mucocele, gastroesophageal reflux, and blee...

INTRODUCTION AND AIMS Barrett's esophagus is a condition that predisposes to esophageal adenocarcinoma. Our aim was to establish the prevalence of Barrett's esophagus at our center, as well as determine its associated factors. MATERIALS AND METHODS We retrospectively assessed the endoscopic reports of 500 outpatients seen at our Gastroenterology Service from November 2014 to April 2016. We de...

Volumetric laser endomicroscopy (VLE) is an advanced endoscopic imaging technique that provides high-resolution mucosal and submucosal images of the esophagus. VLE has been used in surveillance Barrett's esophagus (BE) patients undergoing treatment BE neoplasia. Several image-interpretation scoring systems have developed tested. Advances system, such as addition color to areas image marking muc...

This study aims to investigate the association between transporter associated with antigen processing 1 gene (TAP1) polymorphism and esophagus cancer in a Han Gansu population. TAP1 637A/G polymorphism was analyzed in 200 Han Gansu patients with esophagus cancer and 100 ethnically matched healthy Gansu population by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP). ...

A subthreshold pharyngeal stimulus induces lower esophageal sphincter (LES) relaxation and inhibits progression of ongoing peristaltic contraction in the esophagus. Recent studies show that longitudinal muscle contraction of the esophagus may play a role in LES relaxation. Our goal was to determine whether a subthreshold pharyngeal stimulus induces contraction of the longitudinal muscle of the ...

We report a case of a male, aged 84, with type 2 diabetes, arterial hypertension, ischemic cardiomyopathy and chronic renal disease. We placed a percutaneous endoscopic gastrostomy one year ago, and we did not notice any injuries in the esophagus. We performed an urgent gastroscopy because the patient had an episode of coffee-ground vomit. In the distal third of the esophagus the mucosa had a n...

Distension of the esophagus can cause heartburn and chest pain; however, none of the available techniques to study the esophagus measure esophageal distension. We evaluated the technique of high-frequency intraluminal ultrasound probe (HFIUS) to measure the esophageal cross-sectional area (CSA) during gastroesophageal reflux (GER). The following methods were used: 1) the CSA of agarose gel tube...

OBJECTIVE To outline current concepts regarding etiology, diagnosis, and treatment of intestinal metaplasia of the esophagus and cardia. SUMMARY BACKGROUND DATA Previously, endoscopic visualization of columnar mucosa extending a minimum of 3 cm into the esophagus was sufficient for the diagnosis of Barrett's esophagus, but subsequently the importance of intestinal metaplasia and the premalign...

Introduction: Foreign bodies in the esophagus are considered to be a life-threatening condition in adults and children because of esophageal perforation, chemical pneumonitis, airway obstruction, and development of a fistula, leading to high morbidity and mortality with this condition. Most cases present with immediate symptoms. However, in rare cases, the foreign body can migrate within the t...