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

Retroperitoneal neurilemmomas are rare tumors. They are usually asymptomatic, and often become quite large before they are discovered. A case is reported of a 75-year-old man with complaints of general malaise and left lumbar pain. Intravenous pyelography showed left renal nonfunctional and retrograde pyelography revealed the stenosis of the left ureter. The ultrasonogram demonstrated a cystic mass, and it was diagnosed as a retroperitoneal tumor with central necrosis by computerized tomography and magnetic resonance imaging. The tumor was removed with the left nonfunctioning kidney and ureter. The tumor was 3 x 3 x 4 cm, and the histological diagnosis was neurilemmoma (Antoni A + B type). There was a tight fibrous adhesion between the tumor and the left ureter, and the tumor was concluded to have originated from the adventitia of ureter. To date, 120 benign cases have been reported in Japan. They are reviewed and discussed.
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PMID:[A case of paraureteral neurilemmoma causing ureteral obstruction: report of a case]. 329 87

Indications for intervention in patients with renal stone disease include persistent pain or bleeding, obstruction, infection and the presence of stones that are too large to pass spontaneously. Extracorporeal shock wave lithotripsy has revolutionized the surgical treatment of kidney stones. Contraindications include anticoagulation, bleeding diathesis, sepsis and renal malignancy. Stones in the renal pelvis and upper ureter are treated with shock wave lithotripsy; those in the lower ureter are best approached with the ureteroscope.
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PMID:New approaches in the treatment of renal calculi. 331 58

A case of seminal vesicle cyst associated with ipsilateral renal agenesis was experienced recently in our clinic. A 23-year-old male presented with a complaint of right hemiscrotal pain. Right kidney was not visualized by excretory urography. Cystoscopic examination revealed the absence of the right half of trigone and the right posterolateral wall bulging into the bladder, suggestive of an extrinsic mass displacing the bladder wall. Ultrasonography and computerized tomographic scan showed a large cystic mass in the right side of the retrovesical region. Exploratory operation disclosed that the cystic mass was part of the dilated seminal vesicle. Seminal vesiculectomy was done. Many cases of seminal vesicle cyst are associated with a simple or complex malformation of ipsilateral upper urinary tract (renal agenesis, dysplasia, hypoplasia and ectopic ureter). We speculate that most of the benign seminal vesicle cysts are formed as a congenital anomaly due to defective mesonephric duct development which causes concomitant malformations in the upper urinary tract.
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PMID:[Seminal vesicle cyst associated with ipsilateral renal agenesis]. 332 43

Vocalization electric thresholds were measured bilaterally in muscles of the lower back and in the tail after electrical stimulation of the left ureter in rats implanted with electrodes. 'Painful' stimulation immediately produced a hyperalgesia lasting about half an hour in the left lower back muscles and tail, followed by a 10 min hypoalgesia limited to the back muscles. No modification or only a delayed hypoalgesia appeared in the right muscle. Strong but 'non-painful' stimulation produced no effect or gave rise to an immediate hypoalgesia in the left muscle. Weak non-painful stimulation produced a delayed hypoalgesia in the tail.
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PMID:Muscular hyperalgesia and hypoalgesia after stimulation of the ureter in rats. 338 Mar 39

The Piezolith 2200 allows not only a qualitatively identical treatment of urolithiasis like the HM-Dornier systems or the Siemens Lithostar, but the application of lithotriptable urinary calculi could be extended to cardiac risk patients, to patients with skeletal deformities and to those with unusual body height and weight. As the piezolithotripsy does not cause pain, treatment is possible without anaesthesia or analgesia. Combined with internal ureteral stenting by self-retaining double-J-ureteral catheter also calculi with larger stone masses can be treated advantageously by exclusive piezolithotripsy as monotherapy. Multiple treatments by the piezolithotriptor are possible because of good focussing of the shock waves and the smaller parenchymal alteration. Lithotripsy of ureteral calculi is performed in the upper and lower part of the ureter. In small calculi the retrograde introduction of an ureteral catheter armed with an "ultrasound mirror" is necessary.
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PMID:[Extracorporeal shockwave lithotripsy in the treatment of urolithiasis--experiences from a center with the Piezolith 2200 and HM3 lithotriptors]. 338 94

In ten patients, who underwent ESWL of renal calculi and had severe ureteral colic due to acute obturation of the ureteral lumen by larger stone fragments, i.v. glucagon injections combined with laevulose infusion were applied. All patients reported relief of pain and discomfort within 15-20 minutes after glucagon injection. Position of the stones in the ureter was regularly checked. No particular adverse effects of glucagon were noted. Glucagon increases GFR and diuresis and exhibits spasmolytic effect on the smooth muscle of the ureteral wall, thus facilitating the passage of stone fragments after ESWL. In certain cases and with certain indications we recommend the method as highly effective.
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PMID:A new method for the management of ureteral colic after extracorporeal shock wave lithotripsy. 340 92

A forty-two-year-old man was seen with right lumbar pain. Physical examination revealed a right flank mass. Conventional excretory urography showed lack of right renal function, whereas left kidney was visualized. Right nephrectomy was performed. A cluster of several different sized cysts was disclosed in the right renal region. The renal surface was smooth. The removed kidney weighed 1,150 g. The ureter was completely obstructed at the ureteropelvic junction. Cysts were filled with matrix calculi. Pathological examination showed dysplastic glomeruli and primitive tubules within loose embryonic mesenchyme between two cysts whose walls consisted of smooth muscle strands and connective tissue. The final diagnosis was a congenital unilateral multicystic kidney with renal matrix calculi. The multicystic kidney is the most common form of renal cystic disease in infancy. However, few cases in adults have been reported. The diagnostic approach, treatment and outcome of a congenital unilateral multicystic kidney are discussed.
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PMID:[A case of congenital unilateral multicystic kidney with renal matrix calculi]. 342 23

Extracorporeal shock wave lithotripsy effectively fragments urinary calculi in the upper urinary tract and upper ureter. These fragments pass completely by 3 months in 77.4 per cent of the patients with single stones. Risk of obstruction, increased postoperative pain, need for additional urological operations and retained fragments are low for stones less than 1 cm. in size. As the number of stones treated or single stone size increases above 1 cm. the risk for these factors increases. Adjunctive urological surgical management is required in 9 per cent of the patients preoperatively and 8 per cent postoperatively. Only 0.6 per cent of the patients require some type of open operation to resolve the stone problems after extracorporeal shock wave lithotripsy. Hemorrhage, obstruction by fragments, severe pain and urinary infection all constitute known complications and require careful urological management of all patients. Hospitalization averages 2 days after treatment and patients usually return to work within a few days after they are discharged from the hospital.
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PMID:Report of the United States cooperative study of extracorporeal shock wave lithotripsy. 352 14

Use of the rigid ureterorenoscope has become widely accepted for the diagnosis of ureteral lesions, and for the removal and disintegration of ureteral calculi. Few complications have been reported. During the last 3 years 128 ureteroscopic procedures were performed for a variety of indications (98 for stone disease). There were 26 complications: 22 minor with no morbidity and 4 major that required surgical correction. Minor complications consisted of asymptomatic ureteral perforations in 6 patients, perforations with urinary extravasation, pain, ileus or fever in 4, migration of the stone into the kidney in 10 and migration of the stone outside the ureter with the calculus left in situ in 2. Major complications included ureteral perforation during basket extraction of an upper ureteral stone, urinoma following perforation and requiring drainage, stenosis of the intramural ureter that was corrected by marsupialization and aseptic necrosis of the ureter that was treated by ileal replacement.
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PMID:Complications of ureteral endoscopy. 355 Jan 47

Whereas surgery is no longer used for treatment of pyelocaliceal and lower ureter lithiasis, it remains a valid method in lithiasis of lumbar ureter poorly accessible to endoscopy. A direct approach to lumbar (or pelvic) ureter by posterior vertical lombotomy considerably reduces operation time, pain and duration of hospital stay and disability. Results in a series of 42 cases indicate that surgery remains an excellent and perhaps most effective therapy for lumbar ureter calculi, with the condition that the conventional posterolateral lombotomy be abandoned.
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PMID:[Value of posterior vertical lombotomy in the surgical treatment of calculi of the lumbar ureter. Apropos of 42 cases]. 358 73


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