Retrospective Analysis of Rectal Endoscopic Submucosal Dissection at Ordensklinikum Linz and Kepler Universittsklinikum LinzLINZ (Austria)RETROSPECTIVE studiesMINIMALLY invasive proceduresDISSECTIONCOMPARATIVE literatureUNIVERSITY hospitalsDUODENAL tumorsBackground and study aim: Endoscopic submucosal dissection is a ...