1/12. Transitional cell carcinoma of the ureter and struvite calculi.CONTEXT: The association of primary carcinoma of the ureter and lithiasis is extremely rare. We report a rare case of a primary carcinoma of the ureter with corariform calculus. CASE REPORT: 60-year-old phaeodermal female, reported a history of right-side nephritic colic, hyperthermia and pyuria during the past 20 years and had received treatment for urinary infections a number of times. The first clinical presentation was related to lithiasis and the tumor had not been shown up by excretory urography, cystoscopy or ultrasonography. Two months after the calculus had been eliminated, the patient began to have serious symptoms and a grade III transitional cell carcinoma of the ureter was discovered. Total nephroureterectomy and M.V.A.C. (methotrexate Vinblastina Doxo Rubicina Cisplatina) chemotherapy were tried unsuccessfully. In this report we emphasize the diagnostic difficulty caused by the concomitant presence of the two pathologies. In our opinion, the rapid evolution in this case is directly related to the high grade of the tumor.- - - - - - - - - - ranking = 1keywords = calculus (Clic here for more details about this article) |
2/12. Squamous metaplasia mimicking papillary carcinoma in the upper urinary tract.We experienced a case of squamous metaplasia mimicking papillary urothelial cell carcinoma in the upper urinary tract. A 69-year-old woman, who complained of gross hematuria and intermittent left flank dull pain underwent nephrectomy with the clinical diagnosis of papillary urothelial carcinomas in the left upper urinary tract according to positive split urine cytology and tumorous filling defects of contrast media by the abdominal CT scan. Pathological diagnosis was squamous metaplasia and concomitant foreign body granuloma. Those changes were judged due to a tiny calculus in the ureter. Our presented case implies that a tiny calculus can cause the metaplastic change in the urothelial epithelium and the combination of radiographical and cytological diagnoses would not be enough to lead the correct diagnosis and the definitive surgical treatment against protruding lesions in the upper urinary tract requires more reliable diagnostic modalities.- - - - - - - - - - ranking = 1keywords = calculus (Clic here for more details about this article) |
3/12. CT scanning in the diagnosis of pelvicalyceal filling defects.Of 9 patients found to have a nonopaque filling defect on intravenous pyelogram, 6 were shown to have radiolucent urinary calculi, 2 had intrapelvic blood clots and 1 had a ureteral tumor. The diagnosis was made by computerized tomography and confirmed by surgery in all but the case of ureteral tumor. We recommend CT scanning as the method of choice for unexplained filling defects in the renal pelvis and ureter or when a nonopaque calculus is suspected.- - - - - - - - - - ranking = 0.5keywords = calculus (Clic here for more details about this article) |
4/12. Real-time, multiplanar computerized tomography: a new diagnostic modality used in the detection and endoscopic removal of a distal ureteral fibroepithelial polyp and adjacent calculus.Ureteral fibroepithelial polyps are rare benign mesodermal tumors that occur predominantly in the upper ureter. We report on a patient with a fibroepithelial polyp in the distal ureter that resulted in entrapment of a calculus and partial obstruction of the collecting system. Preoperatively, diagnosis by standard radiographic methods, such as excretory urogram, retrograde pyelogram and conventional computerized tomography with and without contrast enhancement, was not possible because of the close proximity of the fibroepithelial polyp, the ureteral calculus and calcifications in the adjacent internal iliac artery. The new diagnostic modality of real-time, multiplanar computerized tomography imaging using the Sun/Pixar computer system and the 2D/3D Orthotool software was used to make the correct preoperative assessment. Subsequently, the patient underwent ureteroscopic resection of the polyp and extraction of the calculus. A year later she was free of symptoms and there was no evidence of regrowth of the polyp. To our knowledge this is the first report to describe the use of real-time, multiplanar computerized tomography imaging as an effective diagnostic modality in the genitourinary tract. In addition, this is the first ureteral fibroepithelial polyp reported in the literature to be associated with a ureteral calculus and to be excised endoscopically with no recurrence on long-term followup.- - - - - - - - - - ranking = 4keywords = calculus (Clic here for more details about this article) |
5/12. Prolapsed benign polyp of ureter associated with giant ureteral calculus.We report a case of a benign fibroepithelial polyp of the lowermost ureter, which prolapsed into the bladder and was associated with a huge, impacted ureteral stone. The polyp was considered to have resulted from chronic irritation of the ureteral mucosa caused by the stone. review of the literature showed that six out of 74 reported cases had concomitant stones but the polyp was apparently caused by the calculi in only one case.- - - - - - - - - - ranking = 2keywords = calculus (Clic here for more details about this article) |
6/12. adenocarcinoma of the prostate metastatic to the ureter with an associated ureteral stone.Metastatic disease to the ureter is rare. Although it is not often diagnosed during life metastasis to the ureter should be suspected when malignancy and symptoms of ureteral disease are present. We report the thirteenth case of adenocarcinoma of the prostate metastatic to the ureter, which also was associated with a ureteral calculus.- - - - - - - - - - ranking = 0.5keywords = calculus (Clic here for more details about this article) |
7/12. Nephrogenic adenoma of the ureter.We report a case of nephrogenic adenoma in the left ureter. The patient presented with lumbago on the left side. A small calculus was incarcerated in the left ureter 4 cm. from the ureteropelvic junction and an adenoma, which resembled histologically the renal tubules, was observed in the ureter. A search of the world medical literature revealed 58 cases of nephrogenic adenoma, although only 1 case in the ureter has been reported previously.- - - - - - - - - - ranking = 0.5keywords = calculus (Clic here for more details about this article) |
8/12. Computed tomography of urinary calculi.Computed tomography (CT) was used in the evaluation of nine patients with nonopaque calculi in the upper urinary tract. In each case the calculus was identified as a very high density object (370-586 Hounsfield units) with calcium oxalate and cystine stones having somewhat higher attenuation values than uric acid or xanthine stones. The differentiation between calculi and other "radiolucent" filling defects was readily made since calculi had much higher attenuation values than blood clot or neoplasm. CT of the upper urinary tract may obviate the need for more invasive procedures such as retrograde pyelography when nonopaque filling defects require differentiation.- - - - - - - - - - ranking = 0.5keywords = calculus (Clic here for more details about this article) |
9/12. diagnosis of nonopaque calculi by computed tomography.Computed tomography can aid in the distinction of calculi from both tumors and clots in the urinary tract. Its availability, simplicity of interpretation, and noninvasiveness establish it as an important diagnostic modality in selected cases when calculus is in the differential diagnosis of upper urinary tract filling defects.- - - - - - - - - - ranking = 0.5keywords = calculus (Clic here for more details about this article) |
10/12. Carcinoma of the breast metastatic to the ureter presenting with flank pain and recurrent urinary tract infection.urinary tract infection in the female patient is not an uncommon finding. flank pain associated with urinary tract infection is usually due to calculus disease or pyelonephritis. In patients with history of breast carcinoma, metastasis to the periureteral area with resulting obstruction should be considered. The incidence of metastatic breast carcinoma presenting in this fashion is as high as 7.8 per cent. This case shows a patient with metastatic lobular carcinoma of the breast with ureteral obstruction, causing flank pain and recurrent urinary tract infection. This report emphasizes the importance of long-term follow-up in patients with history of breast cancer, especially invasive lobular carcinoma, and the high degree of suspicion required to diagnose and institute proper therapy.- - - - - - - - - - ranking = 0.5keywords = calculus (Clic here for more details about this article) |
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