I would like to say a big thank you to the endoscopist Kiryanov V.A., who was able to painlessly perform a colonoscopy without anesthesia. I have a high threshold of sensitivity and dolichosigma, spikes, so the study is very difficult. Thank you for your professionalism. I also want to say a big thank you to Nurse Runner V. for her help and kindness. I was in the gastroenterology department at the branch on Akademika Pavlova St. in early February 2023.