Efficacy of deep biopsy for subepithelial lesions in the upper gastrointestinal tract

摘要

IntroductionAccurate diagnosis of subepithelial lesions (SELs) in the gastrointestinal tract depends on a variety of methods: endoscopy, endoscopic ultrasound and different types of biopsy. Making an error-free diagnosis is vital for the subsequent application of an appropriate treatment.