PMC9634473_01
Pattern diagram of the properties of guidewire and double J stents (DJSs). (A) Inner diameter of the DJS is too large so the guidewire cannot fit the stent perfectly, which leads to DJS stuck at the ureteral orifice (arrow). (B) Another kind of a DJS with a blind proximal coil, which needs to be placed with a guidewire against its end. (C) DJS has a blunt-end design (arrow), and the inner diameter matches well with the guidewire, which can make the insertion safer and more accurate.
fsurg-09-910572-g001.jpg
PMC9634473_01_fsurg-09-910572-g001.jpg
F1
The guidewire was reserved, and a double-opening F5 DJS was tried to be placed retrograde, but it was stuck at the ureteral orifice (Figure 1A). Instead, a DJS with a blind proximal coil was placed retrograde under a cystoscope, with a guidewire against its end (Figure 1B).
PMC9634473_02
X-ray screening of a double J stent (DJS) malposition. The location of the DJS was abnormally closed to the spine.
fsurg-09-910572-g002.jpg
PMC9634473_02_fsurg-09-910572-g002.jpg
F2
An x-ray image hinted at a DJS malposition (Figure 2).
Computed tomography revealing the double J stent malposition (arrow). The proximal coil was at the level of upper renal polar.
fsurg-09-910572-g003.jpg
PMC9634473_02_fsurg-09-910572-g003.jpg
F3
A plain CT scan showed that the proximal end of the stent was located in the IVC at the level of upper renal polar (Figure 3).