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Query: UMLS:C0403608 (ureter)
 9,655 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

A case of ureteral intussusception caused by a low-grade papillary transitional cell carcinoma of the ureter is described. This is the first case of ureteral intussusception resulting from a malignant tumor of the ureter. The patient presented with weight loss and vague pain in the right lower abdominal quadrant. Right ureterovesical junction obstruction was seen in the retrograde pyeloureterogram. Right nephroureterectomy including a cuff of adjacent bladder wall was performed.
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PMID:Ureteral intussusception by papillary transitional cell carcinoma. 376 42

Removing a ureter by intussuscepting it into the bladder has been described previously; but so far use of this technique was thought to be contraindicated in the presence of a duplicated system. We have modified this technique so that intussusception can now be used in a duplicated system as well. Two cases are presented.
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PMID:Intussusception technique for use in duplicated system. 389 15

This article reports a new case of intussusception due to a ureteral polyp. The diagnosis was based on the preoperative radiological aspects. The polyp was both invaginated and twisted, and was removed along with a segment of the ureter.
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PMID:[Ureteral invagination caused by a fibroepithelial polyp of the ureter. Apropos of a case]. 409 15

We present three cases of prolapse of ureteral tumor. Prolapse of a ureteral tumor is usually associated with antegrade intussusception of the ureter, and is thought to be a sign of noninvasiveness. In such a case segmental ureterectomy may be justified.
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PMID:[Prolapse of ureteral tumor]. 648 71

We report a case of left ureteral intussusception associated with a ureteral polyp. At operation a 7 cm. long polyp was seen originating from the tip of the inside of the proximal ureter, causing 1.7 cm. of antegrade invagination. The polyp was resected and the invaginated region was repaired since pathological examination revealed a benign tumor. At followup an excretory urogram demonstrated prompt improvement of left hydronephrosis.
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PMID:A case of ureteral intussusception associated with ureteral polyp. 685 51

We describe a technique for nephroureterectomy that includes ureteral intussusception and transurethral ureteral resection and our method for transurethral ureteral pull-through. These adjuncts permit total nephroureterectomy through a single skin incision and are appropriate in all cases except in patients with known high-grade transitional cell carcinoma of the renal pelvis or ureter. In 18 cases, these techniques have been shown to be reliable, safe, and rapid; in the 14 patients under observation for five years or longer, there have been no local recurrences of tumor.
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PMID:Total nephroureterectomy with ureteral intussusception and transurethral ureteral detachment and pull-through. 685 87

Certain misleading appearances are peculiar to pediatric uroradiology. The most frequently encountered pitfalls are related to the bladder, to vesicoureteral reflux, and to the duplicated collecting system. The bi-chambered nature of the child's bladder, and the rapid settling of contrast material to the most dependent portion causes many pitfalls in diagnosis. When the child is prone, normal ureters may seem to be ectopic, and ureteroceles may become invisible. When the child is supine, the volume of urine in the bladder may be grossly under-estimated. Reflux can mimic function at urography. The dynamic nature of reflux leads to under-estimation of its presence and degree on the IVP and static cystogram. Reflux into an already dilated system can lead to over-estimation of its degree. Aberrant micturition with rapid refilling of the bladder can simulate incomplete emptying. The diagnosis of "ectopic ureterocele" is based on indirect evidence. Any condition that affects the urinary apparatus in the same way will have a similar appearance. A hugh ureterocele may have a small ureter, and massive reflux into a lower pole ureter may make the diagnosis of duplication difficult. Ureteroicele "look-alikes", and effacement or intussusception of the ureterocele are cystographic pitfalls. Lower pole ureteropelvic junction obstruction and Wilms tumor in the lower portion of a kidney can have surprisingly similar appearances.
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PMID:Misleading appearances in pediatric uroradiology. 742 90

Endoscopic removal of the lower ureteral stump by transurethral resection of the mucosal cuff and intussusception of the ureter is safe, effective, and relatively easy. Although the technique has been used primarily for malignant disease, the cases described herein illustrate that it also is useful for benign disease.
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PMID:Endoscopic removal of lower ureter in nephroureterectomy. 842 95

Although the vast accumulation of data from the continent urinary reservoir clearly proves that intussusception of the ileum is a reliable procedure for preventing urine reflux, few reports have appeared on the application of this technique to ileal replacement of the ureter. In an effort to determine if the nipple valve created by the intussuscepted ileum can prevent urine reflux in the ileal ureter, an experimental study was done using five dogs. I performed ureteral replacement using a newly developed procedure to secure the nipple valve in place. All dogs were followed for 6 months and evaluated by blood urea nitrogen (BUN), creatinine (Cr), serum electrolyte, urine culture, intravenous urogram (IVU), cystogram, and urodynamic studies. No significant differences were notable between the preoperative and 6-month postoperative values of BUN, Cr, and serum electrolytes in all dogs. Only one of the dogs, which showed extussusception of the nipple valve, demonstrated the reflux. IVUs and Whitaker flow studies did not confirm any urinary outflow obstruction. Furthermore, during the pressure studies, the nipple valve prevented transmission of the increased intravesical pressure to the upper urinary tract. I believe that the intussuscepted ileum can be secured by our procedure and can prevent reflux even though it is incorporated into the urinary system itself.
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PMID:Non-refluxing ileal ureter replacement using intussuscepted nipple valve--an experimental study in dogs. 869 62

A 45-year-old man with a history of cyclophosphamide exposure underwent repeated ureteroscopy for positive urine cytology findings after resection of a Grade 2 papillary transitional-cell carcinoma of the bladder. Despite careful technique, an intussusception developed in the left ureter, which was repaired by resection and construction of a Boari flap. To our knowledge, this is the first report of retrograde ureteral intussusception caused by ureteroscopy.
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PMID:Retrograde ureteral intussusception: a rare complication. 887 33


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