Methods of endoscopic treatment of chronic radiation proctitis

Aim. To compare the clinical effectiveness of argon plasma coagulation (APC) and radiofrequency ablation (RFA) for the treatment of patients with chronic radiation proctitis (CRP) complicated by recurrent rectal bleeding.Methods. A prospective, randomized, single-center study conducted in the State Medical University of the Loginov Moscow State Medical Scientifi Centre. The study included 73 patients with 1-2 degrees of CLP on the RTOG/EORTC scale. The indication for endoscopic treatment was recurrent rectal bleeding. Endoscopic treatment was performed: APC (36 patients) and RF (37 patients), depending on randomization.Results. In 44 patients (60.2 %), of which 18 (50 %) patients in the APC group and 26 (70.2 %) patients in the RF group, a complete regression of the disease was revealed. Telangiectasia was detected in 18 patients (50 %) in the APC group and in 11 patients (29.7 %) in the RF group, which were a continuing source of bleeding. After regression of inflmmatory changes, the patients underwent the second stage of surgery corresponding to the randomization group. After the second stage of surgery in the APC group in 17 patients (94.4 %) and in the RF group in 11 patients (100 %), a complete regression of the disease was revealed. Postoperative pain syndrome occurs in two groups; however, the RF group experiences higher intensity and longer duration of pain.Conclusion: Radiofrequency ablation and argon plasma coagulation are effective and safe treatments for rectal bleeding in chronic radiation proctitis without erosive or ulcerative lesions.