Results of extended ureteral strictures endoprosthesis with nithinol stents

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Guliev B.G.

Kafedra urologii Sankt-Peterburgskoĭ gosudarstvennoĭ meditsinskoĭ akademii im. I.I. Mechnikova

Zagazezhev A.V.

Kafedra urologii Severo-Zapadnogo gosudarstvennogo meditsinskogo universiteta im. I.I. Mechnikova, Sankt-Peterburg

Results of extended ureteral strictures endoprosthesis with nithinol stents

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Guliev B.G., Zagazezhev A.V.

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Journal: Endoscopic Surgery. 2013;19(2): 31‑35

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To cite this article:

Guliev BG, Zagazezhev AV. Results of extended ureteral strictures endoprosthesis with nithinol stents. Endoscopic Surgery. 2013;19(2):31‑35. (In Russ.)

Подписка 2025-2 (Endoscopic Surgery)

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The results of ureteral endoprosthesis in 35 patients are presented. In 24 of them indication for surgery was recurrent strictures of upper urinary tract, in 11 - tumor ureteral stricture. There were 16 male and 19 female patients 28-72 years old. 13 patients were diagnosed with extended strictures of the abdominal ureter, 6 - of the pyeloureteral segment, 4 - of ureter of the transplanted kidney, 1 - of Neuwirt ureterocalicostomy. The cause of ureteral stricture in 3 patients was cancer of rectum, cervical cancer in 7 patients. In a female patient with Bourneville-Pringle disease metal stent was placed in pyeloureteral segment of a single right kidney. In all cases ureteral patency was restored. 2 patients had acute pyelonephritis; in 3 patients moderate hematuria was observed. During the follow-up (8-65 months) results of endoprosthesis were good in 22 (62.8%) patients, satisfactory in 10 (28.6%) patients and unsatisfactory in 3 (8.6%) patients. Unsatisfactory results were related to the obstruction of endoprosthesis with proliferative tissue 8, 12 and 18 months after the surgery. In a patient with Bourneville-Pringle disease because of ureteral obstruction with increasing angiolipomatous nodes in the long-term period second nithinol stent was placed in a retrograde way. Thus, ureteral endoprosthesis for extended and recurrent ureteral strictures in case of ineffectiveness or contraindications to upper urinary tract plasty is operation of choice.

Keywords:

ureter

stricture

nithinol stent

endoprosthesis

Authors:

Guliev B.G.

Kafedra urologii Sankt-Peterburgskoĭ gosudarstvennoĭ meditsinskoĭ akademii im. I.I. Mechnikova

Zagazezhev A.V.

Kafedra urologii Severo-Zapadnogo gosudarstvennogo meditsinskogo universiteta im. I.I. Mechnikova, Sankt-Peterburg

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