Evaluation of the Efficacy of Local Budesonide Treatment in Children with Crohn's Disease Located in the Esophagus And/or Stomach And/or Duodenum

The prospective, randomized, single-blind study. Children with CD who meet the inclusion criteria will be randomly assigned, based on a computer-generated randomization list, to one of two groups. One group will be treated with budesonide and the other with omeprazole. All preparations will be taken orally by children every 12 hours for 8 weeks. The child will swallow the capsule/capsules (with omeprazole) with water or the content of the ampoule/ampoules (budesonide). For 30 minutes after swallowing each dose, the patient will not drink, eat, chew gum or brush their teeth. After 30 minutes, the patient will be asked to rinse their mouth. The expected time from the start of screening to randomization is 2 weeks. Follow-up visits will take place at weeks 4, 8, and 12 of the study. The permitted deviation from the designated checkpoints (including randomization) is +/- 4 days. At the visit after 8 weeks, a control gastroscopy will be performed with collection of samples for histopathological evaluation. The 12-week visit will be a follow-up check