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

Localized amyloidosis of the genitourinary tract is a rare phenomenon. The differential diagnosis between amyloidosis and malignancy is difficult. We report the case of an 81-year-old man with extensive unilateral localized amyloidosis of the renal pelvis, ureter and ureteral orifice. Diagnosis of amyloidosis was confirmed only postoperatively.
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PMID:Unilateral extended amyloidosis of the renal pelvis and ureter: a case report. 205 34

Primary localized amyloidosis of the ureter is very rare, and only 22 cases have been reported in the world literature. We report the twenty-third case along with a review of the relevant literature. Due to its radiologic resemblance to malignancy, many cases were treated by nephroureterectomy in the past. The case being reported here was successfully treated by local excision and ureteroneocystostomy.
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PMID:Primary localized amyloidosis of ureter. 304 66

A 62-year-old woman complaining of asymptomatic hematuria was hospitalized. Although a cytologic examination of the urine was negative, abnormal findings in the right renal pelvis by DIP, RP and CT led us to suspect a pelvic tumor, and a right nephroureterotomy was performed. Light microscopy revealed deposits of amorphous, eosinophilic material in the pelvis and proximal portion of upper ureter, however tumor cells were not found. Electron microscopy revealed that these materials were aggregates of linear, non-branching fibrils, measuring about 8 nm in diameter. Histochemically, these were seen to be consistent with amyloid, producing an apple-orange birefringence with Congo red staining under a polarized light. Alkali Congo red staining after pretreatment of KMnO4 demonstrate that this amyloid protein was composed largely of AA protein in addition to lesser amounts of non-AA protein, and a primary localized amyloidosis (amyloid tumor) was diagnosed. A clinicopathologic study that was performed on 12 cases of primary localized amyloidosis of the pelvis, including our case, also is reported.
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PMID:[A case of a primary localized amyloidosis (amyloid tumor) of the renal pelvis and ureter]. 331 35

We present a rare case of primary amyloidosis involving the ureter and renal pelvis. Histologic examination is required to distinguish this condition from transitional cell carcinoma. Intraoperative diagnosis of amyloidosis by frozen section may allow for a conservative surgical approach.
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PMID:Primary amyloidosis of the ureter and renal pelvis. 343 60

An unusual case of localized amyloidosis of the ureter is described. Suspicion of the condition was first raised during operation when a frozen section was examined. An unnecessary nephrectomy was thus spared. It is a rare condition and awareness of the entity is required to recognise it clinically, radiologically or pathologically. The pathogenesis of localized amyloidosis is briefly discussed.
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PMID:Localized amyloidosis of the ureter. 358 31

A case of primary amyloidosis localized to the inferior renal pelvis of a kidney with a duplex collecting system is described. The onset of gross hematuria and mild flank pain necessitated investigations which yielded a clinical impression of tumor within the lower pelvis of a duplex collecting system. At laparotomy a grossly hemorrhagic-appearing mass in the lower pelvis was noted and a left ureteronephrectomy was undertaken. Histologic examination of the surgical specimen revealed amyloid deposition within the inferior pelvis, the corresponding distal portions of the papillae, and the most proximal ureter. Amyloid was not present elsewhere within either the renal parenchyma or the superior collecting system.
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PMID:Primary amyloidosis of renal pelvis with duplicate collecting system. 370 86

Another case of primary isolated amyloidosis of the ureter is reported; we believe this is the seventeenth such case reported in the world literature. The previous cases are reviewed, and the clinical presentation and treatment are discussed. The importance of distinguishing the condition from transitional cell carcinoma of the ureter is emphasized and a conservative approach to surgical treatment is advocated.
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PMID:Primary amyloidosis of ureter. 401 63

This is a case report of a localized amyloidosis of the ureter presented with gross hematuria. Amyloidosis of the ureter is a rare entity and 21 cases have been collected from the Japanese and English literature. It is believed to be difficult to diagnose before surgery and almost all the cases were treated by nephrectomy. After malignancy was denied, autotransplantation combined with psoas hitch procedure was carried out in order to preserve the kidney. This is the second case of ureter amyloidosis treated by autotransplantation. Amyloidosis was confirmed with Congo red stain and electronmicroscopy of which characteristics is discussed in detail.
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PMID:[A case of amyloidosis of the ureter]. 637 8

We report a case of coexisting amyloid and neoplasm in a localized ureteral lesion. This case also represents the third reported instance of sequential bilateral ureteral amyloidosis. Right nephroureterectomy revealed amyloid and an in situ focus of low grade transitional cell carcinoma. Three years later amyloid in the distal left ureter was resected and the gap was bridged by a bladder hitch and Boari flap. Subsequent followup has been uneventful.
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PMID:Bilateral amyloidosis of the ureter associated with carcinoma. 650 16

A 57-year-old man with a history of right-sided renal colic had a stricture of the right ureter which was suspected to be caused by a tumour or retroperitoneal periureteric fibrosis. Peroperative frozen section examination revealed tumour-forming amyloidosis of the ureter. The right kidney therefore could be salvaged by an end-to-end ureter anastomosis. Although primary amyloidosis of the ureter is rare, it should be included in the differential diagnosis of ureteric strictures.
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PMID:Localized primary amyloidosis of the ureter. 664 87


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