Efficacy of endoscopic ultrasound-guided fine-needle aspiration and core needle biopsy in the diagnosis of upper gastrointestinal submucosal lesions

EUS-FNA/CNB is an effective modality for diagnosing UGI submucosal lesions. Awareness of potential errors due to sampling of the bowel wall, lesional cystic degeneration, as well as pancreatic heterotopia and Brunner gland hamartoma is essential in order to avoid false diagnoses.