<prompt> All are endoscopic modalities of treatment of chronic radiation proctitis, EXCEPT:Bipolar electrocoagulationLaser therapyArgon plasma coagulationLigation therapy  <response>: The goal of endoscopic treatments of CRP is to achieve hemostasis.Modalities are 1. Heater probe 2. Neodymium:yttrium-aluminium garnet Nd:YAG laser 3. Potassium titanyl phosphate KTP laser 4. Bipolar electrocoagulation Ref:World J Gastroenterol 2011 November 7; 1741: 4554-4562. 