A New Method for Endoscopic Sampling of Submucosal Tissue in the Gastrointestinal Tract : A Comparison of the Biopsy Forceps and a New Drill Instrument
Background. Sampling of submucosal lesions in the gastrointestinal tract through a flexible endoscope is a well-recognized clinical problem. One technique often used is endoscopic ultrasound-guided fine-needle aspiration, but it does not provide solid tissue biopsies with preserved architecture for histopathological evaluation. To obtain solid tissue biopsies from submucosal lesions, we have const