Tumors of the esophagogastric junction should be classified not only according to the TNM system with regards to tumor penetration (T stage), presence of lymph

Depending on the patient’s degree of sedation and the examiner’s level of experience, carrying out a precise examination of the Z-line may not be very

Low-grade dysplasia (low-grade intraepithelial neoplasia, LGIN) is difficult to distinguish from inflammation histopathologically. The interobserver variance rates usually show kappa values below 0.4, representing a