IRCT20230425057990N2 IRCT 2023-11-14 Shahid Beheshti University of Medical Sciences The effect of endoscopic treatments in the treatment of benign esophageal stricture Comparing the effects of bougie, Balloon dilatation and incisional therapy on dysphagia in patients with benign esophageal stricture secondary to caustic injury 2023-11-22 anticipated 75 Complete https://irct.ir/trial/73388 interventional Randomization: Randomized, Blinding: Not blinded, Placebo: Not used, Assignment: Parallel, Purpose: Treatment, Randomization description: Patients are assigned to two groups using the random block method. The number of blocks will be 6 and in each block 4 patients will be included in the study order. Random allocation of blocks of patients to three treatment groups will be done through Sealed Envelope online software. The randomized list of blocks will be placed in sealed envelopes and will be provided to prescribers on a daily basis. 3 benign esophageal stricture. Intervention 1: Intervention group: bougie-For this group of patients, we start with 7 to 9 mm bougie. Then, according to the response to the treatment, we increase the size of the bogie up to 13-15 mm in three stages (1-3 months apart) to control the patient's symptoms (dysphagia). Intervention 2: Intervention group: Balloon dilatation-For patients in this group, we start with a 7 to 9 mm balloon and increase it to 15 mm to control the patient's symptoms (dysphagia). At each stage (within a time interval of one to three months), we will have up to three numbers of size increase. Intervention 3: Intervention group: incisional therapy-For patients in this group, cutting with a special knife is used to improve the esophageal stricture. Undecided - It is not yet known if there will be a plan to make this available Justification or reason for indecision in sharing IPD is Privacy of participants