Zero-contrast PTRA and stenting for child with TRAS: A case report

Background Kidney transplantation is often complicated by TRAS, and PTRA can effectively treat it. However, PTRA is not appropriate for patients with CKD because iodinated contrast agent may induce nephropathy. Methods This article reports about a 14-year-old boy with a history of kidney transplantation complicated by RAS. He initially underwent percutaneous balloon dilation to relieve the stenosis. One and half a year after dilation, he received zero-contrast PTRA and stenting under the guidance of external and IVUS with reference to previous PAG image. Results After successful stent implantation, the cross-sectional area of the renal artery lumen was significantly increased.The blood pressure and level of creatinine also decreased and kept stable during follow-up. Conclusion This report suggests the feasibility of external ultrasound and IVUS guided, zero-contrast PTRA in patients with poor renal function or iodinated contrast allergy.