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

Bacterial cultures were done from donor ureter and/or graft perfusion fluid on 92 of 112 patients who had renal transplantations during 1977. Three samples of perfusion fluid and 14 samples of donor ureter contained bacteria. In nine cases there was a gram-positive organism, and in 10 cases a gram-negative rod was (among) the contaminant(s). There was no difference in the rate of graft survival, patient survival, or in the frequency of major postoperative complications between the two groups. Only in two instances could the urinary tract infection following transplanation be traced to the contaminating organism. Except for one case in which a urinary fistula may have been linked to the graft contamination, there were no clinically significant sequelae from the contaminated allografts.
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PMID:Frequency and fate of human renal allografts contaminated prior to transplantation. 10 5

Urinary extravasation or ureteral obstruction occurred in 22 patients who received 30 transplants in a series of 290 renal transplants. This incidence represent 10.3 per cent of the entire transplant experience at The Johns Hopkins Hospital and Baltimore City Hospitals from 1968 to the present time. Ureteroneocystostomy was used as the primary form of urinary tract reconstruction in all but 1 patient who had urinary complications. These 22 patients received 30 renal transplants: 6 from living related donors and 24 from cadaver sources. There were 15 instances of urinary extravasation and 14 instances of obstruction. All but 2 fistulas were diagnosed within 30 days of the original transplant. Obstruction occurred later, with 4 cases of ureterovesical obstruction being diagnosed 3 to 5 years after the transplant procedure. The ureterovesical junction or bladder was the site of complication in 17 of the 29 instances. Surgical management in these cases was highly individualized, with successful outcomes more commonly attained in those cases characterized by obstruction. Ureteral stents were used in all but 1 secondary procedure involving the ureter and these stents were not associated with an increased incidence of urinary tract infection. Death directly related to the urological complications occurred in 2 cases, 5 patients underwent transplant nephrectomy and 2 patients died of rejection and infection more than 6 months after the urinary fistulas were successfully managed. From the original series, there are 15 of the 22 patients who have stable renal function after secondary or tertiary urological procedures on the transplanted kidney. Four patients underwent surgical correction of hydronephrosis associated with infection or diminishing renal function more than 3 years after the transplantation and 3 of these had good results.
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PMID:The surgical approach to urological complications in renal allotransplant recipients. 31 3

The current overall reported incidence of major urologic complications following renal transplantation is 5 per cent. The presence of such a complication increases the likelihood of patient mortality by a factor of three. Standard utilization of postoperative radionuclide scanning is very useful in early diagnosis. Vesical fistulas generally result from improper bladder closure. The incidence of bladder complications increases with secondary and tertiary grafts. Ureteral complications result when the blood supply of the ureter is impaired. These include fistula formation, necrosis, and obstruction. Immediate surgical correction is indicated in almost all serious urologic complications following transplantation; otherwise there is marked increase in morbidity and mortality. Complications appearing early in the postoperative period carry a poor prognosis for both graft and recipient survival. The presence of urinary tract infection early in the postoperative period also correlates negatively with graft survival. The presence of multiple renal arteries in the donor has been associated with an increased rate of urologic complications. Ureteral fistulas can be avoided by meticulous dissection of the donor at the time or organ harvesting. Great care must be taken to preserve the arterial and venous blood supply to the ureter by avoiding any dissection into the renal hilum. Aberrant renal arteries must be preserved or repaired if damaged. Ureteroneocystostomy is the preferred method for re-establishing urinary tract continuity following transplantation. The immediate surgical correction of urologic complications is mandatory, and the techniques involved are highly specialized and must be individualized with each patient.
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PMID:Urologic complications in renal transplantation. 34 37

We report here two new cases of ureteral diverticulosis. This condition is found usually in the man of the fifties who has most frequently an urinary tract infection or a prostatic adenoma. The roentgen findings are multiple out-poutchings of the lumbar ureter. Several factors are combined (constitutionnal, urinary tract infection, disordered ureteral-motility) to explain the creation of diverticules in the areas of weakness of ureteral wall, where penetrate the vessels.
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PMID:[Ureteral diverticulosis (author's transl)]. 41 16

Duplication of a kidney and ureter in an 18-month-old male English Bulldog was demonstrated radiographically and was confirmed surgically. Urinary tract infection had been a problem for a year. Antimicrobial therapy resolved the clinical signs of urinary infection but did not eliminate bacteriuria.
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PMID:Renal and ureteral duplication in a dog. 44 78

An example of a blind-ending branch of a bifid ureter in a woman presenting with a urinary tract infection is reported. Definition, diagnosis, and treatment of this anomaly are discussed.
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PMID:Blind-ending branch of a bifid ureter. 45

Blind-ending bifid ureter in a woman with urinary tract infection and a duplicated renal pelvis in her twin sister are reported. The blind-ending bifid ureter terminated as a fibrous cord with a terminal mass of immature renal tissue. This type of ureter may be a transitional form between histologically blind-ending bifid ureter and duplication of the renal pelvis and/or kidneys. Findings in twins support this opinion.
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PMID:Duplication of the renal pelvis and blind-ending bifid ureter in twins. 56 Jul 40

An ectopic ureterocele may be defined as a cystic dilatation of the distal submucosal or intravesical portion of a ureter that is associated with the ectopic moiety of a completely duplicated system or, in the absence of duplication, associated with a ureter draining into an ectopic position. Using this definition, we reviewed our experience with 22 children treated during a 7-year period. More than 50 per cent were less than 3 years old at the time of presentation. The female preponderance was 3 to 1. Urinary infection was the most frequent mode of presentation. The diagnosis is made most easily when there is a high index of suspicion. Although treatment must be tailored to the situation, in general total heminephroureterectomy and excision of the ureterocele are the preferred choice. Eighty-seven per cent of the patients so treated has a satisfactory result.
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PMID:Ectopic ureteroceles in children. 66 Jul 67

Renal duplication is the most common malformation within the urinary tract system and as such a particular challenge to the pediatrician with regard to diagnosis and therapy. It is discovered either by chance or in relation to chronically recurring urinary tract infections. Urinary tract infection is the main clinical symptom in 2/3 of all the patients with renal duplication. Incidence, age-and sex-distribution, predilection of side or bilateral occurrence, configuration of the ureter and the statistically significant combination with vesico-uretral reflux show systematic regularities and are discussed in connection with the literature. Ureterocele, concrements, obstructions or hydronephrosis often are consequences of renal duplication or, as with hydronephrosis, correlated malformations like aplasia, hypoplasia, malrotation, horseshoe kidney or duplication of the urethra. There is a causative relation between renal duplication and tumors or tuberculosis. Other correlated malformations are particularly heart malformations or myelomeningocele. It depends on the severity of the disease whether therapy will be symptomatic or operative. Between 1968 and 1974 we saw 114 children with renal duplication.
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PMID:[Renal duplication in childhood. Incidence and clinical significance (author's transl)]. 66 29

The Lich-Gregoir antireflux procedure is a simple and safe method for the treatment of primary reflux of all grades if the ureter is not grossly dilated on the excretory urogram. Reflux was cured in 97.7 per cent of 429 ureters in 371 children. A stenosis of the terminal ureter requiring reimplantation occurred in 0.5 per cent. The over-all rate of reinterventions was 3.7 per cent. This low complication rate makes surgical correction of reflux advisable if urinary tract infection and primary reflux cannot be eradicated by continuous antimicrobial therapy within 6 months.
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PMID:The Lich-Gregoir antireflux plasty: experiences with 371 children. 67 39


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