In recent decades, there has been a steady increase in the incidence of ulcerative colitis worldwide. The purpose of the work was to analyze the literature data on modern features of the treatment of ulcerative colitis, as well as to present our own results and cases from practice. Mesalazine remains the mainstay of remission and often its induction in patients with ulcerative colitis. Currently, the nature of the treatment of ulcerative colitis is determined by the target level of remission. The fact of the onset of endoscopic remission is known to occur much later than subjective clinical improvement. In recent years, this provision has been supplemented by evidence of a delay in histological, laboratory (fecal calprotectin) and transmural remission from endoscopic. There is increasing evidence that the duration and quality of remission depends on the depth of remission. When using ultrasound, it is not difficult to urgently assess the activity and prevalence of inflammation by the parameters of the intestinal wall. Together with the level of fecal calprotectin, this information may be key to the choice of induction, escalation, maintenance or de-escalation treatment options. Of course, endoscopic examination with colon biopsy remains a necessary planned component of the management of a patient with ulcerative colitis. There are 3 cases from practice in which the achievement of transmural remission was carried out during the treatment with mesalazine. The possibility of monitoring the activity of the inflammatory process and its prevalence in the colon with the help of ultrasound examination of the intestinal wall has been clearly demonstrated. According to the results of our study, it was found that with a high activity of the disease according to the scale of Doppler mapping of the colon wall (Limberg 4), an erosive-ulcerative process was recorded in all patients according to the results of endoscopic examination (Mayo 3). Detection of the normal intestinal wall on the echogram in all cases was accompanied by the absence of endoscopic activity (Mayo 0) or its minimal manifestations (Mayo 1).
