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

Primary renal candidiasis is an uncommon disorder. It typically presents as urinary tract obstruction secondary to bezoar in the ureter, progressive oliguria (at times alternating with episodes of diuresis), ureteral colic, passage of tissue- or stone-like material, pyuria, and/or progressive renal failure. The patient described here presented with gross and microscopic hematuria. In our literature review, we found neither of these reported as clinical signs of primary renal candidiasis. With the widespread use of drugs (eg, antibiotics, antineoplastic chemotherapeutic agents, systemic corticosteroids) which facilitate the growth of Candida, primary renal candidiasis should be considered in the patient who presents with hematuria.
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PMID:Gross hematuria: a rare manifestation of primary renal candidiasis. 735 38

We have described a 58-year-old man in whom an unusually fibroblastic ureteritis cystica at the ureteropelvic junction caused partial obstruction and ureteral colic. Local resection resulted in relief of renal pain and improved urinary flow through the ureter. Explanations for the unusual nature of the lesion and only partial relief of obstruction after surgical resection are proposed.
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PMID:Ureteritis cystica causing obstruction. 738 61

The effect of calcium antagonists nifedipine and verapamil on spontaneous rhythmic contractions of human isolated ureter obtained from donor subjects undergoing kidney transplantation was investigated in comparison with a nonsteroidal antiinflammatory drug indomethacin. Stop-times i.e. the time elapsing from application, were determined for each drug. The rank order of potency at 10(-8) and 10(-7) M concentrations of the drugs was: nifedipine > verapamil > or = indomethacin. However, no significant difference of the stop-times was observed at 10(-6) M concentration of the drugs tested. The rhythmic contractions were re-activated by PGF2 alpha after stoppage with indomethacin but not with nifedipine or verapamil. These results suggest that not only endogenous PG synthesis but also an influx of calcium from the extracellular space is responsible for the spontaneous rhythmic activity of human ureter. The beneficial effects of using calcium antagonists in the treatment of ureteric colic is discussed.
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PMID:The effect of nifedipine and verapamil on rhythmic contractions of human isolated ureter. 750 79

During a one-year period (from April 1992 to April 1993), 294 patients with the complaint of ureteric colic seen at the Emergency Department of Tan Tock Seng Hospital were investigated with a plain X-ray of the kidney, ureter and bladder (KUB), urinary analysis (urine FEME) and subsequently intravenous urogram (IVU) at the outpatient clinic. The results showed that majority (73%) of the patients were male. Sixty percent of the cohort were in the age group 30-50 years. After evaluation, it was found that only 114 (39%) of the patients with ureteric colic had abnormal IVU. Among these patients, 99 were diagnosed to have calculus disease, 12 with urothelial tumours, 1 with renal cyst and 2 had no pathology detected. Nevertheless most (72%) of the patients did not require intervention. In addition, it was noted that if the KUB or urine FEME was positive, the chances that a urological pathology was present were 72% and 91% respectively. However, if both of them were negative, the chance that a pathology would not be present was 93%. This suggests that patient selection is very essential to avoid unnecessary investigations.
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PMID:Ureteric colic: value of initial investigations and the outcome. 757 15

Rats with artificial calculosis of one ureter develop hyperalgesia in the ipsilateral oblique musculature as evidenced by decreased vocalization threshold to electrical muscle stimulation lasting over a week. The aim of the study was to evaluate the effect on this hyperalgesia of spasmolytic anticholinergic and/or non-steroidal antiinflammatory drugs, common therapies for colic pain in humans. Rats implanted with a unilateral ureteral stone were treated for 10 days with: (1) saline; (2) hyoscine-N-butylbromide (15 mg/kg/day i.p.); (3) ketoprofen (15 mg/kg/day); or (4) hyoscine-N-butylbromide + ketoprofen (15 + 15 mg/kg/day). Oblique muscle vocalization thresholds were measured daily for 3 days before and 10 days after operation. Ipsilateral thresholds decreased significantly after stone implantation on: (1) seven days (max. 32%) for saline; (2) one day (max. 20%) for hyoscine-N-butylbromide; (3) one day (max. 18%) for ketoprofen, but did not change significantly for hyoscine-N-butylbromide + ketoprofen. These results indicate a protective effect against muscle hyperalgesia of ureteral origin by spasmolytic and antiinflammatory drugs, maximal when the two treatments are combined.
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PMID:Effects of spasmolytic and/or non-steroidal antiinflammatory drugs on muscle hyperalgesia of ureteral origin in rats. 767 6

A 54-year-old male who consulted for an episode of right-sided nephric colic is described. A urological ultrasound scan disclosed grade I hydronephrosis in the upper half of the right kidney and an anechoic tubular image ending in the prostate gland. A subsequent urographic evaluation confirmed the diagnosis of ectopic ureter in prostatic urethra.
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PMID:[Ultrasonography diagnosis of ureteral ectopy in prostatic urethra]. 780 81

We report an additional case of ectopic ureter opening into the seminal vesicle in a patient who had consulted for nephric colic from calculus in dysplastic kidney and urinary tract infection. The clinical features, the diagnostic and therapeutic aspects of this rare malformation are briefly reviewed.
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PMID:[A new case of ectopic ureteral outlet into the seminal vesicle]. 831 28

The 6.9 F semirigid ureteroscope has a hybrid design that shares the rigid ureteroscope body with the fiberoptic imaging bundle of the flexible ureteroscopes. This allows more space for the inner channel, so that there are two working channels of 3.4 F and 2.3 F. This ureteroscope was used in 65 cases on 57 patients without dilatation of the intramural ureter. It was mainly used for the management of ureteral calculi (29 cases) and for visual diagnostic purposes (28 cases). The double-channel design proved extremely helpful in lithotripsy, while the ability to access the ureter without dilatation gave a consistently clearer picture for diagnostic purposes. Forty-two cases were done under local anesthesia with sedation. In 1 patient a minor perforation developed secondary to use of electrohydraulic lithotripsy (EHL). Postoperatively, 7 patients complained of colic, and in 5 patients a low grade fever developed, while 2 patients had both.
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PMID:The 6.9 F semirigid ureteroscope in clinical use. 842 79

Since August 1993, the Dornier Lithotripter U 30 has been used at the Department of Urology of the Katharinenhospital in Stuttgart. The machine consists of an endourologic table with an X-ray unit mounted on a C-arm and an electromagnetic shockwave source equipped with an inline ultrasound scanner and oblique shockwave coupling with a water cushion. Stone location can be performed with fluoroscopy or simultaneous ultrasound scanning. Until December 1994, 1092 stones had been treated, requiring 1533 sessions: 497 stones (45.5%) were situated in a calix, 426 (39%) in the renal pelvis, 130 (11.9%) in the upper ureter, and 39 (3.6%) in the distal ureter. Auxiliary measures were necessary before SWL in 245 patients (16%): double-J stent placement in 184 patients (12%), percutaneous lithotripsy in 43 patients (2.8%), and percutaneous nephrostomy in 15 patients (1%). The mean number of shockwaves was 3018, ranging from 250 to 3750. The time needed for positioning ranged from 1 to 10 minutes (mean 3 minutes). The mean treatment time was 30.5 minutes (range 10-50 minutes). There were 26 treatments (1.7%) performed without analgetic medication. In 1359 cases (88.6%), analgetics were utilized, and in 108 cases (7.0%), a sedative was added. In 40 patients (2.6%), general anesthesia was necessary. Complete stone disintegration was achieved in 94%. Auxiliary measures after SWL were ureteroscopy in 8.4% and percutaneous nephrostomy in 1.3%. Perirenal hematomas were found in 10 patients (0.6%). Colic pain necessitating analgetic medication was reported by 247 patients (16.1%). Body temperature above 38 degrees C occurred after 20 treatments (1.3%). At 3 months' follow-up, 110 patients of 128 patients (85.9%) were stone free. The Dornier Lithotripter U 30 has proven highly effective for SWL of renal and ureteral stones, radiolucent and radiopaque, and can be used as a full endourologic work-station.
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PMID:The Dornier Lithotripter U 30: first clinical experience. 858 Sep 32

The contribution of changes in ureter motility produced by a stone to the pain of ureteric calculosis is unclear. In this study we measured ureter motility as changes in intraureter pressure in anesthetized rats 1, 4, and 8 d ys after implantation of an artificial calculus (n = 33) and compared it with motility in normal (n = 8) and ligated (n = 4) ureters. Partial obstruction of the ureter by the stone produced a 478% increase in the amplitude of contractions, a 70% decrease in the rate of contractions, and a 66% decrease in the baseline pressure. The pressures reached during contractions were equivalent to those evoking nociceptive reactions in animals and humans. These changes persisted in rats that had spontaneously eliminated the stone. Complete obstruction of the ureter by the stone or by ligation abolished contractions. We conclude that the increased motility caused by a stone likely contributes to the development and maintenance of visceral pain and referred hyperalgesia in ureteric colic and to the persistence of referred hyperalgesia after elimination of the stone.
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PMID:Effects of artificial calculosis on rat ureter motility: peripheral contribution to the pain of ureteric colic. 917 31


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