Knotted double j ureteral stent: a case report and literature review

Jendouzi, Omar; Lamghari, A. El Idrissi; Jamali, Mounir; Harchaoui, Amine; Alami, Mohamed; Ameur, A.

doi:10.11604/pamj.2022.43.5.34538

Cited by 3 publications

(2 citation statements)

References 17 publications

(21 reference statements)

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“…In the majority of reported cases, no abnormal appearance was detected in the urinary system radiograph taken before stent removal [ 2 ], which would suggest knotting in the DJ stent; it has been stated that the knot may form due to traction during extraction. However, in our cases, knot formation was observed to develop spontaneously immediately after URS, without any intervention or traction.…”

Section: Discussionmentioning

confidence: 99%

Spontaneous knot formation complication of double J: two case reports

Kolu,

Akan

2024

J Med Case Reports

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Background Use of ureteral stents has become an integral part of urological practice. However, it also brought with it many complications. Double J (DJ) stent knotting is a rare stent complication, and only a few cases have been reported in the literature. Although the exact cause is unknown and, in the literature, it is generally thought that knots occur due to traction. In this case report we present for the first time that spontaneous knots can occur due to ureteral peristalsis or ureteral anomalies. Case presentation Two patients (67 and 35 aged-Caucasian person) with ureteral stones who presented to the emergency department with colicky pain and had no previous history of urological surgery. We observed knot formation in the routine urinary system radiographs taken before stent removal in two patients whose ureters were observed to be narrow during endoscopic ureteral stone treatment. The stents were successfully removed using gentle traction under general anesthesia. Conclusions We discussed the cause and solution of spontaneous knot formation. We emphasized the importance of the direct urinary system radiograph taken before DJ stent removal.

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Section: Discussionmentioning

confidence: 99%

Spontaneous knot formation complication of double J: two case reports

Kolu,

Akan

2024

J Med Case Reports

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“…• Stent Knotting: It is a rare complication. Most of these knots involve the proximal end of the stent near the coil, but every portion can be affected [27,28]. Previous reports have attributed knot formation to the excessive length of the stent, stent shape (double-J or multicoil), and flexibility or anatomical abnormalities, such as cystocele and ileal conduits.…”

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confidence: 99%

Complications Subsequent to Urinary Tract Stent Placement: An Overview Focusing on the Imaging of Cancer Patients

Corvino,

Basile,

Cocco

et al. 2024

Medicina

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Ureteral involvement by a tumor is common, and both partial and complete obstructions can result in symptoms that are distressing and debilitating, especially in cancer patients for whom the resection of the primary tumor is not considered an option. Maintaining ureteric patency in these patients is a challenge. In addition, in cases where a patient has undergone nephroureterectomy due to primary transitional cell cancer, it becomes necessary to decompress the urinary tract to preserve the contralateral kidney from irreversible damage. This is possibly due to ureteral stenting, both retrograde and anterograde, and percutaneous nephrostomy (PCN). Since imaging plays an important role in the routine monitoring of stents, their more and more increasing use requires radiologists to be familiar with these devices, their correct position, their potential complications, and their consequences. The aim of this review is to offer a comprehensive review of the imaging features of some urinary stents and to show the complications encountered in cancer patients as a direct consequence of an invasive diagnostic or therapeutic procedure. Specifically, we focus on ureteral stents and PCN.

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