Kusetshenziswa i-endoscopically ngokuhambisana ne-monopolar electrosurgical current ukuze kutholwe ama-biopsies ezicubu zezicubu ze-gastrointestinal kanye nokususwa kwama-polyp ahlala.I-catheter entsha eklanyelwe ukuthuthukisa ukusebenza kahle kokudlula ku-anatomy ehlukumezayoInkomishi ehlukahlukene yakhelwe i-mucosa/submucosa ehlukene