RESUMO
Ureteral stricture, urine leakage and other urinary complications are likely to occur after kidney transplantation, which severely affect the function of renal allograft and even lead to renal allograft loss. Ureteral stent plays a critical role in kidney transplantation, which could promote the urine flow from kidney to bladder after kidney transplantation, lower the pressure within the ureter and reduce the risk of early urinary complications. However, it may also cause urinary tract infection, stent-related complications and BK virus infection, etc. Therefore, clinicians should flexibly grasp the indications for ureteral stent removal. In this article, the application, potential adverse reactions and the timing of removal of ureteral stent in the field of kidney transplantation were reviewed, aiming to provide reference for clinical decision-making related to ureteral stent after kidney transplantation.
RESUMO
Generally, self expandable metallic stents (SEMSs) are widely used for the treatment of malignant gastrointestinal stenosis due to their effectiveness and low complication rate. On the contraty, balloon dilatation or Bougie dilatation is commonly used for treating benign gastrointestinal stenosis as non-invasive methods. However, their such complications such as recurrence, hemorrhage and perforation are problematic when these dilation techniques are used. Temporary placement of a SEMS in a benign gastric outlet obstruction is expected to be a promising therapeutic modality despite of several major complications such as migration. Rarely, stent removal can, on rare occasions, be difficult or cause bleeding or perforation when the stent is embeded in the mucosa due to mucosal hyperplasia at the tips of the stent. We report here on a case of a stent, partially embeded in the mucosa after temporary stenting for treating a benign pyloric stenosis, which was successfully removed using argon plasma coagulation.