PURPOSE: To report our experience in treating patients with failed previous open pyeloplasty by transperitoneal laparoscopic pyeloplasty. MATERIALS AND METHODS: Eleven patients with previous failed open pyeloplasty were reviewed. all of whom had undergone transperitoneallaparascopicpyeloplasty. All procedures were performed by a single team. https://www.tftoyes.shop/product-category/demon-slayer/