PMC9098992_01
Preoperative kidney ureter bladder (KUB) film, intravenous urography (IVU), and abdominal CT. (A) There was no evident stent image on preoperative KUB; (B,C) show the preoperative IVU revealing left hydronephrosis, delayed left renal excretion, dilation of the left ureter, and no evident obstruction in the left ureter; (D) absence of evident stent on preoperative abdominal CT.
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F1
It was challenging to distinguish the ureteral stent both on kidney ureter bladder (KUB) film (Figure 1A) and non-contrast computed tomography (CT) (Figure 1D). Preoperative intravenous urography (IVU) revealed left hydronephrosis, delayed left renal excretion, dilation of the left ureter, and no evident obstruction in the left ureter (Figures 1B,C).
Many polyps in the left ureter and the appearance of the ureteral stent. (A) Many white polyps at the entrance of the left ureter are seen via the ureteroscope. (B) Many white polyps in the middle of the left ureter are seen via the ureteroscope. (C) Orange ureteral stent observed during ureteroscopy. (D) Unbroken ureteral stent removed successfully.
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F2
A ureteroscope (Wolf F8.0/9.8) was used to enter the bladder through the urethra, and many polyps near the left ureteral orifice were seen (Figure 2A). Using a zebra guidewire, the ureteroscope was advanced into the left ureter, and several polyps in the ureter were seen (Figure 2B). Calculus removal forceps were used to remove the stent (Figure 2C). The stent had a diameter of about 2 mm and a length of 23 cm (Figure 2D).
Timeline of symptoms, treatment, and prognosis in our case.
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F3
The timeline of the patient's symptoms, treatment, and prognosis in our case is shown in Figure 3.