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

A rare case of congenital mid-ureteral stricture is reported. A 17-year-old woman was admitted with sudden onset of right flank pain. Intravenous urography demonstrated bilateral small renal calculi, left hydronephrosis and a stricture of the left ureter at the level of the pelvic brim. The diagnosis was determined as congenital mid-ureteral stricture because the ureter tapered smoothly from 25 mm to 5 mm in diameter at the stenotic site. She was successfully treated by partial ureterectomy with end-to-end anastomosis. Histopathologically, no dysplasia of muscular layer was recognized.
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PMID:[Congenital mid-ureteral stricture: report of a case]. 936 49

We report a case of sarcomatoid carcinoma of the ureter in a 60-year-old woman who presented at our hospital with right flank pain. She had undergone total ovariectomy and radiation therapy for ovarian cancer at the age of 40 years. A diagnosis of ureteral tumor (cTsN0M0) led to radical right nephroureterectomy and partial cystectomy. Microscopic examination showed a tumor that contained areas of both sarcoma and transitional cell carcinoma. The carcinomatous tissues were blended into the sarcomatous areas and there was a transitional zone between the 2 components. Immunohistochemical examination showed that the spindle cells were positive for cytokeratin, so the final diagnosis was sarcomatoid carcinoma of the ureter. The patient has remained well without any evidence of recurrence for 5 months since the operation. There is no effective adjunctive therapy, so constant careful monitoring will be necessary. Sarcomatoid carcinoma of the ureter is a rare tumor and this is only the sixth case reported in Japan.
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PMID:Sarcomatoid carcinoma of the ureter: a case report. 947 96

A 57-year-old male was admitted because of the right flank pain. The image examinations, retrogradeurography, abdominal CT and MRI, showed a mass located at the upper right ureter. Although the tumor was not typical as ureteral cancer, we could not make a diagnosis of a benign tumor by image examinations. Therefore nephroureterectomy that was surgical method for ureteral cancer was performed. The tumor was diagnosed as inflammatory pseudotumor of the ureter by histological findings. Inflammatory pseudotumor is extremely rare for ulogeital organs. And this lesion is difficult to distinguish from malignancy only by image examinations. Therefore, the surgical resection and pathological studies are necessary.
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PMID:[Inflammatory pseudotumor of the ureter: a case report]. 949 24

A 57-year-old male patient was admitted to our hospital for left flank pain and a slight increase in serum creatinine. He had left hydronephrosis and extrinsic stenosis of left lower ureter shown by intravenous and retrograde pyelography. Computed tomography (CT) and magnetic resonance imaging (MRI) demonstrated a mass along the bilateral lower ureters, the left side of which was larger (5 x 3 x 4 cm). After surgical exploration and biopsy of the tumor the patient was diagnosed as having xanthogranulomatous inflammatory pseudotumor. No malignant findings were observed. Tumor size spontaneously decreased to 20% of the original size at 2 weeks after laparotomy. The patient underwent ureterolysis because of prolonged left hydronephrosis. Approximately 3 years after development of disease, hydronephrosis has improved and the pelvic tumor has almost diminished.
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PMID:[A case of retroperitoneal pseudotumor (xanthogranuloma)]. 950 3

Noncontrast helical computed tomography (CT) has recently been found to be superior to excretory urography (IVU) in the evaluation of patients with suspected ureterolithiasis. Noncontrast helical CT does not require the use of intravenous contrast material with its associated cost and risk of adverse reactions and can be completed within 5 min, in most cases. Noncontrast CT often detects extraurinary pathology responsible for the patient's symptoms. CT is also more sensitive than IVU in detecting the calculus, regardless of its size, location, and chemical composition. However, confidently differentiating ureteral calculi from phleboliths along the course of the ureter may, at times, be difficult. The "tissue-rim" sign, a rim of soft tissue attenuation around the suspicious calcification, is helpful in making this distinction. Noncontrast CT does not provide physiological information about renal function and the degree of obstruction. A pilot study has suggested a proportional relationship between the extent of perinephric edema and the degree of obstruction. The cost of the examination and the radiation dose delivered to the patient may be higher with CT. Despite these limitations, noncontrast helical CT has quickly become the imaging study of choice in evaluating patients with acute flank pain.
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PMID:Noncontrast helical CT for ureteral stones. 954 10

Avulsion of ureter without renal injury is rarely caused by blunt trauma, only 28 cases having been reported in Japan. A 33-year-old male was admitted to our hospital 1 month after blunt abdominal trauma at work. He complained of left flank pain and macroscopic hematuria. Under the suspicion of renal or ureteral injury, drip infusion urography and abdominal computerized tomography revealed an extravasation from the left upper ureter and urinoma formation in the retroperitoneal cavity. In order to reduce the inflammation, the urinoma was drained. The retrograde pyelogram revealed complete obstruction at the left upper ureter, 20 cm from the left ureteral orifice. Urinary tract reconstruction, end-to-end ureteral anastomosis, was performed under the diagnosis of left ureteral avulsion. Drip infusion urography revealed normal ureteral healing without stricture formation at 2 years after reconstruction.
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PMID:[Successful treatment with end-to-end ureteral anastomosis for ureteral avulsion caused by abdominal blunt trauma: a case report]. 965 4

Localized amyloidosis of the ureter is a relatively rare condition. We report a case of primary localized ureteral amyloidosis. A 66-year-old man was referred to our hospital complaining of right flank pain and gross hematuria. From the right hydronephrosis and irregular margin of the right lower ureter seen on the anterograde pyelography, we could not rule out a right ureteral malignancy. Total nephroureterectomy was performed and histologic examination showed ureteral amyloidosis. Amyloid was classified immunohistochemically as Alambda type. After all examinations for secondary or systemic amyloidosis were negative, primary localized amyloidosis of the ureter was confirmed.
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PMID:Primary localized amyloidosis of the ureter. 971 51

Fifteen cases of primary urothelial carcinomas of the ureter are reported (14 transitional cell carcinoma and 1 mixed transitional cell carcinoma and squamous cell carcinoma). There was a clear male predominance (11/4); the peak incidence was in the sixth decade. Most tumors originated from the distal third of the ureter. Multicentricity and high recurrence rate after partial ureterectomy were noted. The clinical signs were hematuria and flank pain. Urine cytology and IVU were diagnostic in a limited number of cases. Retrograde pyelography was very helpful. CT showed to be the image modality of choice for diagnosis and preoperative staging.
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PMID:Primary ureteral carcinoma. Report of 15 cases and comparison of the effectiveness of diagnostic methods. 982 36

We describe the case of a 45-year-old woman with a ureterocolic fistula caused by colonic diverticulitis. She had a 10-year history of intermittent left flank pain that had not been treated. The fistulous tract between the left ureter and sigmoid colon was confirmed by retrograde urography and a barium enema. A nephroureterectomy was successfully performed.
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PMID:Ureterocolic fistula secondary to colonic diverticulitis. 985 34

Retrocaval ureter is a rare disease in childhood which is due to a abnormal development of the inferior cava vein. We report a new case of retrocaval ureter in a 9 year-old girl who had consulted for macrohematuria and right flank pain. Preoperative intravenous urography and DTPA diuretic renogram suggested this entity. CT scan was no necessary for the diagnosis. We consider the diuretic renogram the best diagnostic method in the surgical decision of this disease.
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PMID:[Retrocaval ureter in children: surgical approach based on the obstructive pattern in the diuretic renogram with 99mTc DTPA]. 988 20


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