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

Introduction of specific chemotherapy and vaccination leads to a remarkable recession of renal tuberculosis in the younger age group. Renal tuberculosis is the result of a haematogenous spread of tubercle bacillus. Haematogenous spreading occurs immediately after primary infection, or, in elderly patients, in combination with recurrency of tuberculous foci in lungs and hilar-lymphnodes. Simultaneous metastasis in the skeleton, especially in the vertebrae, are observed in 30%. The incubation period between tuberculous spread and clinical manifestation of renal tuberculosis lasts several years, in the average 5-8 years, for calcareous kidneys it may last as long as 20 years and more, for tuberculous pyelitis only a few months. Today it is possible to treat renal tuberculosis with drugs (Streptomycin, PAS and INH). In 13% the cicatrisation is combined with obstruction of calices and partial hydronephrosis, in 7% with obstruction of the ureter and total hydronephrosis. Early chemotherapy may prevent the development of tuberculous hydronephrosis.
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PMID:[Pathology of renal tuberculosis (author's transl)]. 95 6

Morphological investigations of the urethra, urinary bladder (2 localizations), ureter, renal pelvis and kidneys were performed in sows with Corynebacterium suis infection. The first stages of the disease were characterized by changes of the transitional epithelium in the bladder where epithelial vacuolisation, goblet cell differentiation, leucocytic infiltrations, and haemorrhages occurred. In chronically affected animals different stages of a mucopurulent, partly erosive to ulcerative cystitis were observed. Furthermore, chronic cystitis was characterized by polypoid mucosal proliferation and bacterial accumulations. Ureter and urethra showed signs of a mild purulent inflammation. In the renal pelvis there was a severe fibrinopurulent and necrotizing pyelitis which was accompanied by bacterial invasions. The parts of the renal pelvis without desquamation of the transitional epithelium undergo mucoid degenerations. The final stage of the disease is characterized by severe fibrosing chronic interstitial nephritis leading to death of the animals due to uraemia.
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PMID:[Corynebacterium suis infections in swine. 2. Morphological findings in the urinary tract with special reference to the bladder]. 208 May 4

Unilateral hydronephrosis was induced by temporary ligature of the left ureter in 29 rabbits. In 21 animals so treated, chronic pyelonephritis was simultaneously induced by intravenous application of a suspension of E. coli. Histologic examination of renal pelvic epithelia in animals killed four weeks after the surgical intervention, revealed the following features: 1. Simple hyperplasia of urothelium in 12 cases, 2. atypical hyperplasia - (dysplasia) of urothelium in 10 cases, 3. v. Brunn's nests in 20 renal pelvises; 11 cases of cystic pyelitis, all combined with Brunn's nests, 4. metaplastic transformation of visceral mono- or bilayered epithelium into multi-layered urothelium-like structures in 19 renal pelvises. These changes are observed almost exclusively in the left renal pelvis of animals subjected to temporary ureteral ligature. Atypical urothelial hyperplasia is found only together with chronic pyelonephritis. Hyperplastic and dysplastic epithelial changes in the renal pelvis, the formation of Brunn's nests, and cystic pyelitis are interpreted as sequelae of postrenal obstruction or concomitant chronic inflammation.
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PMID:Epithelial abnormalities in the renal pelvis in experimental hydronephrosis and pyelonephritis. 634 54

Massive hematuria of renal origin was diagnosed in 4 dogs. In all dogs, blood and blood clots were clearly visible in the urine. Serum urea nitrogen and urine concentrating ability were normal. All dogs were anemic, and results of coagulation and platelet function tests were within normal limits. Excretory urography indicated hydroureter and hydronephrosis in all dogs, with filling defects in the bladder attributable to large blood clots in 2 dogs. Cystotomy and catheterization of the ureters enabled identification of one kidney as the source of bleeding in 3 dogs. Unilateral nephrectomy and ureterectomy resolved their hematuria. The results of histologic examination were normal in 2 dogs. The 3rd dog had evidence of pyelitis. Cystoscopy of the 4th dog did not reveal hematuria from either ureter. The dog was not operated on and it continued to have intermittent hematuria.
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PMID:Massive hematuria of nontraumatic renal origin in dogs. 662 96

We relate our experience about ureteritis, especially non specific ureteritis. The traumatic, radiation ureteritis will be discussed in others chapters. Most cases of ureteritis are infective, and may be due to any of the organism normally found in urinary tract infections, particularly Escherichia Coli, staphylococci, streptococci, enterococci, proteus and pyocyaneus. It is really primary, but it usually ascending from an associated cystitis, descending from pyelonephritis, or due to direct spread from and adjacent inflammatory lesion such as appendicitis or salpingitis. The infection may also reach the ureter by lymphatic spread, particularly from the prostate and seminal vesicles. Any associated abnormalities of the ureter, such as stricture, megaloureter, ureterocele, and so on, will naturally predispose to infective ureteritis. As ureteritis is rarely primary, the first step in treatment must be toward the elucidation and cure of any underlying lesion. Thus calculi, cystitis, pyelitis, and so on, will need appropriate therapy, and this in itself will considerably improve or cure the ureteritis, and specially in the more acute cases. In the chronic cases with stricture formation, dilation or even excision of the stenosed portion may be required. For the treatment of the strictures we want emphasize the role of the ureteral stenting thinking its use is necessary to preserve the renal function.
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PMID:[Ureteritis]. 847 90

We herein report a case of pyelitis cystica in 65-year-old woman. She was referred to our hospital in order to have a treatment for a stone in the ureter on left side. Excretory urogram showed hydronephrosis on left, and multiple, small, smooth and round filling defects in the renal pelvis on right side. ESWL was performed to the ureteral stone, and the stone was discharged completely in 4 days. Then further examinations were made for the filling defects of right renal pelvis. Nonopaque calculi were ruled out on retrograde pyelogram and CT scan. Urinary cytology from the renal pelvis was class I. Our impression was pyelitis cystica of right kidney. Under spinal anesthesia, ureterofiberscopy was performed. Multiple small cysts were observed in the pelvis and calyx, as well as cystitis cystica. Cold cup biopsy was also done and histopathological finding ws pyelitis cystica, without malignancy. We compared endoscopic findings with radiographic findings in 18 cases of pyloureteritis cystica from the Japanese literature. The radiographic findings were multiple small, in a uniform size, and round filling defects with regular contour, and the endoscopic findings were multiple white or ocher colored, half sphere or sphere shaped, and small cyst with smooth surface in 15 of 18 cases. We thought these findings were characteristic ones in pyloureteritis cystica. Endoscopy and biopsy are mandatory for diagnosis of pyeloureteritis cystica.
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PMID:[A case of pyelitis cystica diagnosed with utilization of ureterofiberscope]. 959 69

Blind ureter is a rare and incidental condition that, alike other congenital diseases, can be associated to other urological malformations. This papers presents one case report of a blind ureter diagnosed as a result of a apparent anaemic haematuria from the left renoureteral system due to unspecific diffused pyelitis.
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PMID:[Blind ureter diagnosed through hematuria]. 980 79

Tissues from ureter and renal pelvis of 18 sows naturally (n = 15) and experimentally (n = 3) infected with Actinobaculum suis (former Actinomyces, Eubacterium suis) were studied using light and scanning as well as transmission electron microscopy. The results were compared with the findings from 11 clinically healthy sows as controls. The lesions in both the ureter and renal pelvis of naturally and experimentally infected animals were similar. In severe cases there were necrotizing ureteritis and pyelitis with accumulation of bacterial colonies in some cases. Several superficial epithelial cells were found phagocytosing necrotic debris. In mild cases the main lesions included epithelial cell hyperplasia, desquamation of the superficial epithelial cells and goblet cell metaplasia with intraepithelial cyst formation. The goblet cells were found in the superficial as well as in the intermediate cell layers. Generally, it was observed that severe purulent ureteritis and pyelitis/ pyelonephritis in sows were to be expected only in mixed infection of A. suis with other bacteria. The findings were compared and discussed with the changes in the infected urinary bladder of sows and the alterations induced by urinary tract infection in man.
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PMID:Microscopic and ultrastructural lesions of the ureter and renal pelvis in sows with regard to Actinobaculum suis infection. 1244 Jul 89

The most frequent postoperative urinary problem after various types of general operations is urinary retention. It may be due to previously unrecognized dynamic obstruction, but is more often psychogenic or due to a temporary disturbance in function of the sympathetic and parasympathetic nervous systems. Catheterization may be done safely as a means of preventing over-distention of the bladder. Irritative postoperative lesions are usually due to trigonitis, cystitis or pyelitis. The immediate trauma of pelvic operation is sometimes followed by infection. Careful study will reveal the cause and the type of infection and will give an indication for proper treatment. Anuria may be the result of postoperative shock, chemical injury of the kidneys or block of the urinary channels by crystals, detritus, edema, or operative accident. A careful, immediate analysis of the problem is imperative. Fluid intake in anuria must not be pushed to the point of edema. Accidental surgical blocking or severance of a ureter usually may be repaired without difficulty following a period of recovery to permit subsidence of the acute tissue reaction caused by urinary extravasation.
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PMID:Acute urinary tract complications following general surgical procedures. 1814 12

Technical advances in endoscopic equipment have led to increased ureteroscopic biopsies of the upper urinary tract, resulting in limited biopsy material. We retrospectively reviewed 76 consecutive mid-upper ureter and renal pelvis biopsies submitted for consultation from January 2004 to January 2009, where follow-up was obtainable. There were 49 (64.5%) males and 27 (35.5%) females. Thirty-nine (51.3%) of the biopsies were from the ureter with the remaining 37 (48.7%) from the renal pelvis. The mean age was 70 years for males and 71 for females (range: 24 to 89). At consultation, the most common diagnoses were benign urothelium (n=25, 32.9%); atypical (n=17, 22.4%); low-grade noninvasive papillary urothelial carcinoma (n=10, 13.2%); and high-grade noninvasive papillary urothelial carcinoma (n=8, 10.5%). In cases where a definitive diagnosis could not be reached on expert review, it was mainly because of the limited size of the biopsy, absence of papillary fronds, crush artifact, and distorted architecture. There were 7 major discrepancies between the outside and second opinion diagnosis, where all of the cases were initially diagnosed as an urothelial neoplasm, yet was non-neoplastic upon review. Strips of urothelium without well-developed fibrovascular cores, polypoid ureteritis/pyelitis, and reactive urothelium mimicked urothelial neoplasms. In 5 of these 7 cases, there was no gross lesion suspicious of a tumor present according to the urologist. Overall, 33 of the 44 (75%) cases with a mass noted by the urologist or by radiography was found to have a neoplasm at follow-up. Conversely, 24 of the 32 (75%) cases without a grossly suspected tumor had no neoplasm at follow-up. The association between the histologic presence of a neoplasm at follow-up and the presence of a clinically suspected tumor was highly significant (P<0.0001). Pathologists need to recognize that in almost 1 of the 4 renal pelvic/ureteral biopsies a definitive diagnosis cannot be made because of the inadequate tissue. Caution must be exercised in the evaluation of these limited specimens, especially in the absence of a clinically suspected tumor.
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PMID:Small endoscopic biopsies of the ureter and renal pelvis: pathologic pitfalls. 1965 2


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