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1.
Rev. Assoc. Med. Bras. (1992) ; 65(3): 388-393, Mar. 2019. graf
Article in English | LILACS | ID: biblio-1003032

ABSTRACT

SUMMARY OBJECTIVES: We examined the effects of tadalafil, one of the phosphodiesterase type 5 (PDE5) inhibitors, in a rat model of with partial and complete unilateral ureteral obstruction (UUO). METHODS: The rats were divided into 5 groups: sham (n=6), partial unilateral ureteral obstruction (PUUO, n=6), PUUO with tadalafil treatment (PUUO+T; Cialis, 10 mg/72 h, intragastric; Lilly, Indianapolis, Indiana, USA), complete unilateral ureteral obstruction (CUUO, n=6), and CUUO with tadalafil treatment (CUUO+T). RESULTS: Fifteen days after the UUO, the ureter presented changes in the layers of urothelium and significant infiltration of inflammatory cells in the PUUO and CUUO groups. Compared with the sham, PUUO and CUUO groups had severe increased inflammatory cell infiltration. The urothelial epithelium exhibited cell degeneration and loss because of the swollen, atrophic, and denuded epithelial cells in the PUUO and CUUO groups. In the PUUO+T and CUUO+T groups, the urothelium revealed less epithelial cell degeneration and loss. The expressions of α-smooth muscle actin (α-SMA) and transforming growth factor-β (TGF-β) exhibited up-regulation in the PUUO and CUUO groups. The expression of TGF-β decreased positively correlated with that of α-SMA in the tadalafil therapy groups, PUUO+T and CUUO+T. CONCLUSION: The phosphodiesterase type 5 inhibitor's tadalafil reduced expressions of α-SMA and TGF-β in the obstructed ureters, measured by biochemical examinations. In addition, tadalafil decreased urothelium degeneration due to the decreased epithelial cell loss and inflammatory cell infiltration. Our results show that tadalafil prevents or slows down the onset of ureter inflammation and urothelial degeneration in rats with UUO.


RESUMO OBJETIVOS: Examinamos os efeitos do tadalafil em um dos inibidores da fosfodiesterase tipo 5 (PDE5) em um modelo de rato com obstrução ureteral unilateral parcial e completa (UUO). MÉTODOS: Os ratos foram divididos em cinco grupos: sham (n = 6), obstrução ureteral unilateral parcial (PUUO, n = 6), PUUO com tadalafil (PUUO T; Cialis, 10 mg/72 h, intragástrica; Lilly, Indianapolis, Indiana, EUA), completa obstrução ureteral unilateral (CUUO, n = 6) e CUUO com tratamento com tadalafil (CUUO T). RESULTADOS: Quinze dias após a UUO, o ureter apresentou alterações nas camadas de urotélio e infiltração significativa de células inflamatórias nos grupos PUUO e CUUO. Em comparação com os grupos sham, PUUO e CUUO, houve um aumento grave da infiltração de células inflamatórias. O epitélio urotelial exibiu degeneração e perda celular devido às células epiteliais inchadas, atróficas e desnudas nos grupos PUUO e CUUO. Nos grupos PUUO T e CUUO T, o urotélio revelou menor degeneração e perda de células epiteliais. Nós mostramos que a expressão da actina do músculo liso-α (α-SMA) e do fator de crescimento transformador-β (TGF-β) foram exibidas como sub-regulação nos grupos PUUO e CUUO. A expressão do TGF-β foi diminuída positivamente correlacionada com a da α-SMA nos grupos de terapia com tadalafil, PUUO T e CUUO T. CONCLUSÃO: O tadalafil do inibidor da fosfodiesterase tipo 5 reduziu as expressões α-SMA e TGF-β nos ureteres obstruídos, medidos por exames bioquímicos. Além disso, o tadalafil diminuiu a degeneração do urotélio devido à diminuição da perda de células epiteliais e da infiltração de células inflamatórias. Nossos resultados mostram que o tadalafil previne ou retarda o início da inflamação do ureter e degeneração urotelial em ratos com UUO.


Subject(s)
Animals , Male , Ureteral Obstruction/pathology , Ureteral Obstruction/drug therapy , Phosphodiesterase 5 Inhibitors/pharmacology , Tadalafil/pharmacology , Reference Values , Ureter/drug effects , Ureter/pathology , Enzyme-Linked Immunosorbent Assay , Up-Regulation , Reproducibility of Results , Transforming Growth Factor beta/analysis , Actins/analysis , Rats, Sprague-Dawley , Inflammation/pathology , Inflammation/prevention & control
2.
Rev. Assoc. Med. Bras. (1992) ; 65(3): 333-335, Mar. 2019. graf
Article in English | LILACS | ID: biblio-1003047

ABSTRACT

SUMMARY Chronic constipation is a common diagnosis with a high prevalence in the elderly. Constipation affects the quality of life of sick individuals, bringing several clinical complications.


RESUMO A obstipação crônica é um diagnóstico com alta prevalência comum em idosos. A constipação afeta a qualidade de vida das pessoas doentes, carregando muitas complicações clínicas.


Subject(s)
Humans , Female , Aged, 80 and over , Constipation/complications , Renal Insufficiency/etiology , Ureter/pathology , Ureter/diagnostic imaging , Tomography, X-Ray Computed , Chronic Disease , Constipation/chemically induced , Constipation/diagnostic imaging , Renal Insufficiency/diagnostic imaging , Laxatives/adverse effects
3.
Acta cir. bras ; 33(5): 408-414, May 2018. tab, graf
Article in English | LILACS | ID: biblio-949346

ABSTRACT

Abstract Purpose: To evaluate the clinical stenosis or precursor histological changes that ureteral access sheaths commonly used in ureteroscopic surgeries may cause in the long term in ureter. Methods: In this study, the animals were divided into 9 groups and according to their groups, ureters of the rabbits were endoscopically fitted with 2F and 3F ureter catheters. The catheters were left in place and withdrawn after a specified period of time. All the ureters were excised and evaluated macroscopically, microscopically and histologically. Ureter diameters were measured and FGF-2 (+) labeled fibroblasts were counted in connective tissue as stenosis precursors. Results: Macroscopically or microscopically, no stenosis was found in any group. The ureter diameter of the group that were catheterized for the longest time with the catheter that had the widest diameter was significantly lower than the group with the shorter duration and the catheter with the narrower diameter and the control group. When the groups were compared in terms of their FGF values, there was a significant difference in FGF-2 counts at all three ureter levels (p <0.05). Conclusion: The use of ureteral access sheath may lead to histological changes, as its diameter and duration increase.


Subject(s)
Animals , Male , Rats , Ureter/surgery , Urologic Diseases/surgery , Urinary Catheterization/instrumentation , Ureteroscopy/instrumentation , Ureter/pathology , Statistics, Nonparametric , Disease Models, Animal
4.
Int. braz. j. urol ; 43(6): 1052-1059, Nov.-Dec. 2017. tab, graf
Article in English | LILACS | ID: biblio-892924

ABSTRACT

ABSTRACT Purpose: Bladder cancer (BC) may involve the ureteral orifice, and the resection of the orifice has oncological and functional consequences such as development of upper tract urothelial carcinoma (UTUC), vesicoureteral reflux or ureteral stenosis. The aim of this study was to investigate the oncological and functional outcomes of the ureteral orifice resection in BC patients and determine the predictive factors for UTUC development. Materials and Methods: A total of 1359 patients diagnosed with BC, between 1992 and 2012, were reviewed retrospectively. Patients were grouped with respect to orifice resection and compared for development of UTUC, survival and functional outcomes. Kaplan-Meier method was used to compare survival outcomes. Logistic regression analysis was performed to determine predictors of UTUC development. Results: Ureteral orifice involvement was detected in 138 (10.2%) patients. The rate of synchronous (10.1% vs. 0.7%, p=0.0001) and metachronous (5.3% vs. 0.9%, p=0.0001) UTUC development was found to be higher in patients with ureteral orifice involvement. Orifice involvement and tumor stage were found to be associated with development of UTUC in the regression analysis. Overall (p=0.963) and cancer specific survival rates (p=0.629) were found to be similar. Hydronephrosis was also significantly higher in patients with orifice involved BC, due to the orifice obstruction caused by the tumor (33.3% vs. 13.9%, p<0.05). Conclusions: BC with ureteral orifice involvement has significantly increased the risk of having synchronous or metachronous UTUC. However, orifice involvement was not found to be associated with survival outcomes. Development of stricture due to resection is a very rare complication.


Subject(s)
Humans , Male , Female , Aged , Ureter/pathology , Urinary Bladder Neoplasms/pathology , Retrospective Studies , Treatment Outcome , Kaplan-Meier Estimate , Middle Aged , Neoplasm Invasiveness , Neoplasm Staging
5.
Int. braz. j. urol ; 42(6): 1129-1135, Nov.-Dec. 2016. tab, graf
Article in English | LILACS | ID: biblio-828925

ABSTRACT

ABSTRACT Purpose: To determine the effect of diagnostic ureteroscopy on intravesical recurrence in patients with upper tract urothelial carcinoma (UTUC) after radical nephroureterectomy (RNU). Materials and Methods: We conducted a retrospective analysis of 664 patients who were treated with RNU for UTUC from June 2000 to December 2011, excluding those who had concomitant/prior bladder tumors. Of the 664 patients, 81 underwent diagnostic ureteroscopy (URS). We analyzed the impact of diagnostic ureteroscopy on intravesical recurrence (IVR) using the Kaplan-Meier method. Univariate and multivariate analyses were used to determine the independent risk factors. Results: The median follow-up time was 48 months (interquartile range (IQR): 31-77 months). Patients who underwent ureteroscopy were more likely to have a small (p<0.01), early-staged (p=0.019), multifocality (p=0.035) and ureteral tumor (p<0.001). IVR occurred in 223 patients during follow-up within a median of 17 months (IQR: 7-33). Patients without preoperative ureteroscopy have a statistically significant better 2-year (79.3%±0.02 versus 71.4%±0.02, p<0.001) and 5-year intravesical recurrence-free survival rates (64.9%±0.05 versus 44.3%±0.06, p<0.001) than patients who underwent ureteroscopy. In multivariate analysis, the diagnostic ureteroscopy (p=0.006), multiple tumors (p=0.001), tumor size <3cm (p=0.008), low-grade (p=0.022) and pN0 stage tumor (p=0.045) were independent predictors of IVR. Conclusions: Diagnostic ureteroscopy is independently associated with intravesical recurrence after radical nephroureterectomy.


Subject(s)
Humans , Male , Female , Aged , Ureteral Neoplasms/pathology , Urinary Bladder Neoplasms/pathology , Urologic Neoplasms/pathology , Ureteroscopy/methods , Neoplasm Recurrence, Local/pathology , Nephrectomy/methods , Ureter/pathology , Ureteral Neoplasms/surgery , Urinary Bladder Neoplasms/surgery , Carcinoma, Transitional Cell/surgery , Carcinoma, Transitional Cell/secondary , Follow-Up Studies , Urologic Neoplasms/surgery , Disease-Free Survival , Neoplasm Grading , Middle Aged
6.
Int. braz. j. urol ; 41(6): 1178-1184, Nov.-Dec. 2015. tab, graf
Article in English | LILACS | ID: lil-769761

ABSTRACT

Objectives: To evaluate effects of Cajal-like cells on human renal pelvis and proximal ureter on peristalsis. Materials and Methods: 63 patients submitted to nephrectomy due to atrophic non-functional kidney associated with hydroureteronephrosis were included as study group and 30 cases with nephrectomy due to other reasons were included as control group. Samples from renal pelvis and proximal ureters were obtained and sections of 5μ form paraffin blocks of these samples were prepared; layers of lamina propria and muscularis mucosa were examined by immune-histochemistry using CD117 in order to determine count and distribution of Cajal-like cells. Results: During immune-histochemical examinations of sections, obtained from renal pelvis and proximal ureter of hydronephrotic kidneys by CD117, Cajal-like cells number determined in lamina propria and muscularis propria was statistically significantly lower compared to control group (p<0.001). Distribution of Cajal-like cells in renal pelvis and proximal tubulus was similar under examination by light microscope, and also both groups were not different from each other regarding staining intensity of Cajal-like cells by c-kit. Conclusion: Significantly reduced number of Cajal-like cells in study group compared to control group, shows that these cells may have a key role in regulation of peristalsis at level of renal pelvis and proximal ureter in urinary system.


Subject(s)
Adolescent , Adult , Aged , Aged, 80 and over , Child , Child, Preschool , Female , Humans , Male , Middle Aged , Young Adult , Hydronephrosis/pathology , Kidney Pelvis/pathology , Telocytes/pathology , Ureter/pathology , Cell Count , Mucous Membrane/pathology , Nephrectomy , Proto-Oncogene Proteins c-kit , Peristalsis/physiology , Reference Values , Statistics, Nonparametric
7.
Article in English | IMSEAR | ID: sea-159464

ABSTRACT

Fibroids are most common benign tumors of the uterus, mostly situated in the body of the uterus. Rarely, they arise from extra-uterine sites with broad ligament fibroids being uncommon. Although by clinical examination and newer imaging modalities, we can easily know about size, number, and origin of these tumors and any anatomical distortion of surrounding vital organs, but some time it is very difficult to differentiate pre-operatively between large broad ligament leiomyomas and ovarian/adnexal pathology specially if cystic degeneration or necrosis is present in leiomyoma. We report four patients with broad ligament fibroids to emphasize the importance of their location, the diagnostic difficulties, and surgical complications they can pose.


Subject(s)
Broad Ligament/pathology , Female , Humans , Laparotomy/methods , Laparotomy/statistics & numerical data , Leiomyoma/diagnosis , Leiomyoma/epidemiology , Leiomyoma/surgery , Middle Aged , Ureter/injuries , Ureter/pathology , Uterus/pathology
8.
Rev. méd. Chile ; 143(1): 96-100, ene. 2015.
Article in Spanish | LILACS | ID: lil-742556

ABSTRACT

After years of discussion by the Chilean legislature, the Law Nº 20.584, which regulates health care related rights and duties of people, entered into force in Chile in October 2012. This bill represents an important step in the recognition and protection of health care related rights, welfare, dignity and duties of persons. It also intends to protect potential participants in clinical research. However such protective measures include explicit prohibitions such as the review of clinical records or the inclusion of people with mental or psychological handicaps as research participants. We herein discuss the implications of this law in medical research.


Subject(s)
Animals , Male , Rats , Gene Expression Regulation , MicroRNAs/genetics , MicroRNAs/metabolism , Disease Models, Animal , Glomerulonephritis/metabolism , Hypertension/pathology , Kidney Glomerulus/metabolism , Kidney Tubules/metabolism , Kidney/injuries , Kidney/metabolism , Rats, Inbred WKY , Time Factors , Transforming Growth Factor beta/metabolism , Ureter/pathology
9.
Korean Journal of Urology ; : 41-47, 2015.
Article in English | WPRIM | ID: wpr-148911

ABSTRACT

PURPOSE: To evaluate the impact of adjuvant chemotherapy (AC) in patients with upper tract urothelial carcinoma and lymphovascular invasion (LVI) after radical nephroureterectomy (RNU). MATERIALS AND METHODS: We retrospectively analyzed the clinical records and clinicopatholgic outcomes of patients (n=552) treated with RNU between 1986 and 2013. Patients treated with neoadjuvant chemotherapy and those for whom LVI status was not recorded were excluded. Patients were divided into two groups according to LVI (n=86) or no LVI (n=256). RESULTS: The study included 344 patients (240 men and 104 women) with a median of 53.9 months of follow-up (range, 1-297 months) after RNU. Tumors were organ confined (T2/N0) in 211 (61.3%) and tumor grade high in 291 (84.6%). AC was administered in 64 patients (18.6%). A total of 280 patients (81.4%) were treated with surgery alone. Patients with LVI tended to be older (p=0.049), have a higher pT stage (pT3/T4, p<0.001), be pN+ (p<0.001), have a high tumor grade (p<0.001), and experience recurrence (p<0.001). In the multivariate analysis, LVI was an independent prognostic factor for cancer-specific survival and overall survival (p=0.002 and p<0.001, respectively). The multivariate analysis demonstrated that in the subgroup of patients with LVI, AC was a significant prognostic factor for cancer-specific survival and overall survival (hazard ratio, 0.51; p=0.027 and hazard ratio, 0.50; p=0.025, respectively). CONCLUSIONS: AC does not seem to reduce mortality in patients with advanced upper tract urothelial carcinoma after RNU. In the subgroup of patients with LVI, AC had a positive impact on cancer-specific survival and overall survival. LVI would be helpful for selecting patients who are appropriate for AC.


Subject(s)
Aged , Female , Humans , Male , Middle Aged , Carcinoma, Transitional Cell/drug therapy , Chemotherapy, Adjuvant , Follow-Up Studies , Kidney Neoplasms/drug therapy , Lymphatic Metastasis , Multivariate Analysis , Neoplasm Grading , Neoplasm Recurrence, Local , Neoplasm Staging , Nephrectomy , Prognosis , Retrospective Studies , Survival Rate , Ureter/pathology , Ureteral Neoplasms/drug therapy , Urinary Tract/pathology
10.
Korean Journal of Urology ; : 63-67, 2015.
Article in English | WPRIM | ID: wpr-148908

ABSTRACT

PURPOSE: Urinary calculi is a familiar disease. A well-known complication of endourological treatment for impacted ureteral stones is the formation of ureteral strictures, which has been reported to occur in 14.2% to 24% of cases. MATERIALS AND METHODS: This was a prospective study. Ureterotripsy treatment was used on patients with impacted ureteral stones. Then, after 3 months and 6 months, the condition of these patients was assessed by means of a kidney-ureter-bladder (KUB) ultrasound. If the KUB ultrasound indicated moderate to serious hydronephrosis, the patient was further assessed by means of a computed tomography intravenous urogram or retrograde pyelogram to confirm the occurrence of ureteral strictures. RESULTS: Of the 77 patients who participated in the study, 5 developed ureteral strictures. Thus, the stricture rate was 7.8%. An analysis of the intraoperative risk factors including perforation of the ureter, damage to the mucous membrane, and residual stone impacted within the ureter mucosa revealed that none of these factors contributed significantly to the formation of the ureteric strictures. The stone-related risk factors that were taken into consideration were stone size, stone impaction site, and duration of impaction. These stone factors also did not contribute significantly to the formation of the ureteral strictures. CONCLUSIONS: This prospective study failed to identify any predictable factors for ureteral stricture formation. It is proposed that all patients undergo a simple postoperative KUB ultrasound screening 3 months after undergoing endoscopic treatment for impacted ureteral stones.


Subject(s)
Humans , Constriction, Pathologic/diagnosis , Hydronephrosis/diagnosis , Kidney/diagnostic imaging , Prospective Studies , Risk Factors , Ureter/pathology , Ureteral Calculi/therapy , Ureterolithiasis/surgery , Ureteroscopy/adverse effects , Urinary Bladder/diagnostic imaging
11.
Korean Journal of Urology ; : 717-721, 2015.
Article in English | WPRIM | ID: wpr-128352

ABSTRACT

PURPOSE: To evaluate the distribution of ureteral stones and to determine their characteristics and expulsion rate based on their location. MATERIALS AND METHODS: We retrospectively reviewed computed tomography (CT) findings of 246 patients who visited our Emergency Department (ED) for renal colic caused by unilateral ureteral stones between January 2013 and April 2014. Histograms were constructed to plot the distribution of stones based on initial CT findings. Data from 144 of the 246 patients who underwent medical expulsive therapy (MET) for 2 weeks were analyzed to evaluate the factors responsible for the stone distribution and expulsion. RESULTS: The upper ureter and ureterovesical junction (UVJ) were 2 peak locations at which stones initially lodged. Stones lodged at the upper ureter and ureteropelvic junction (group A) had a larger longitudinal diameter (4.21 mm vs. 3.56 mm, p=0.004) compared to those lodged at the lower ureter and UVJ (group B). The expulsion rate was 75.6% and 94.9% in groups A and B, respectively. There was no significant difference in the time interval from initiation of renal colic to arrival at the ED between groups A and B (p=0.422). Stone diameter was a significant predictor of MET failure (odds ratio [OR], 1.795; p=0.005) but the initial stone location was not (OR, 0.299; p=0.082). CONCLUSIONS: The upper ureter and UVJ are 2 peak sites at which stones lodge. For stone size 10 mm or less, initial stone lodge site is not a significant predictor of MET failure in patients who have no previous history of active stone treatment in the ureter.


Subject(s)
Adult , Female , Humans , Male , Middle Aged , Kidney Pelvis/pathology , Renal Colic/drug therapy , Retrospective Studies , Sulfonamides/therapeutic use , Tomography, X-Ray Computed , Treatment Failure , Ureter/pathology , Ureteral Calculi/drug therapy , Urological Agents/therapeutic use
12.
Int. braz. j. urol ; 40(4): 493-498, Jul-Aug/2014. tab, graf
Article in English | LILACS | ID: lil-723968

ABSTRACT

Introduction The importance of upper tract cytology for evaluating tumors is unclear. We correlated upper tract cytology with histologic findings in patients who underwent nephroureterectomy for upper tract urothelial carcinoma (UTUC) at a single tertiary care referral center. Materials and Methods 137 patients underwent nephroureterectomy between 2004 and 2012. 18 patients were excluded (benign tumors, atrophic kidneys with the remaining 119 patients serving as our study population). Upper tract cytology from the renal pelvis and/or ureter were retrospectively reviewed and analyzed with final pathology data in the remaining patients with UTUC. Results 57% (68/119) had preoperative upper tract cytology collected. 73% (50/68) patients had abnormal cytology (positive, suspicious) with a sensitivity of 74% (which increased to 90% if atypical included), specificity of 50% and a positive predictive value of 98%. High grade tumors were more common than expected (77% high grade vs. 20% low grade). Abnormal cytology did not predict T stage or tumor grade. Interestingly, positive upper tract cytology was found in all of the UTUC CIS specimen. Conclusions Upper tract cytology has been utilized to support the diagnosis of upper tract urothelial carcinoma. Our data demonstrates that abnormal cytology correlates well with the presence of disease but does not predict staging or grading in these respective patients. .


Subject(s)
Adult , Aged , Aged, 80 and over , Female , Humans , Male , Middle Aged , Carcinoma/pathology , Kidney Pelvis/pathology , Ureter/pathology , Ureteral Neoplasms/pathology , Biopsy , Kidney Pelvis/cytology , Neoplasm Grading , Neoplasm Staging , Predictive Value of Tests , Reproducibility of Results , Retrospective Studies , Ureter/cytology
13.
Acta cir. bras ; 29(supl.3): 49-54, 2014. tab, graf
Article in English | LILACS | ID: lil-726243

ABSTRACT

PURPOSE: To perform a quantitative assessment of different types of pelvic ureter tissues with chronic dilation in adults, using stereological methods. METHODS: We analyzed fragments of dilated pelvic ureters obtained from 6 patients aged between 35 and 67 years (mean, 46 years) who underwent ureteral reimplantation surgery for different reasons. The obstruction duration ranged from 27 to 180 days (mean, 93 days). The control group included fragments of normal pelvic ureters obtained during nephrectomy in 7 kidney transplant donors (age: range, 25-51 years; mean, 36 years). The volumetric density of collagen in the ureter, elastic fibers, and smooth muscle fibers was assessed. RESULTS: The volumetric density (Vv) of collagen showed no significant difference between the two groups (control: 45.3 ± 6.1; dilated: 40.8 ± 6.9; P = 0.23). A statistically significant increase in Vv of elastic fibers was observed in the dilated ureters (control: 18.4 ± 1.2; dilated: 24.6 ± 5.4; P = 0.03). A statistically significant increase in the Vv of smooth muscle fibers was observed in the dilated ureter (control: 42.0 ± 6.0; dilated: 56.2 ± 6.1; P = 0.001). CONCLUSION: The chronically dilated pelvic ureters had significantly more elastin and smooth muscle contents than the controls. .


Subject(s)
Adult , Aged , Female , Humans , Male , Middle Aged , Collagen/ultrastructure , Ureter/pathology , Dilatation, Pathologic/pathology , Elastic Tissue/ultrastructure , Immunohistochemistry , Microscopy, Polarization , Muscle, Smooth/ultrastructure
14.
Int. braz. j. urol ; 39(6): 817-822, Nov-Dec/2013. tab, graf
Article in English | LILACS | ID: lil-699116

ABSTRACT

Objectives To evaluate the pathologic findings and outcomes after distal ureterectomy for a retained ureteral segment following incomplete nephroureterectomy for urothelial carcinoma of the renal pelvis or ureter. Materials and Methods After IRB approval, an institutional database identified patients who underwent distal ureterectomy for a retained ureteral segment after assumed complete nephroureterectomy for urothelial carcinoma of the upper ureter or renal pelvis. Clinical and pathologic variables were analyzed. Results From January 1993 to July 2007, 12 patients were identified with median age at the time of ureterectomy of 60.5 years (41-85 years). Initial approach to surgery was open in 9 patients and laparoscopic in 3 patients. The median time from nephroureterectomy to distal ureterectomy was 23.5 months (range 2-66). At the time of initial surgery, pathologic stage was Ta, T1, T2, and T3 in 3,4,1, and 4 patients respectively. Initial pathology was urothelial carcinoma; grade 2 in 6 patients and grade 3 in six patients. Pathology from the subsequent surgery demonstrated urothelial carcinoma in the retained ureteral segment in 8 patients, dysplasia or atypia in 3 patients, and 1 patient with chronic inflammation. Local recurrence in 2 patients was present in a segment of ureter discontinuous with the bladder after laparoscopic nephroureterectomy. Three patients (25%), all with initial grade 3 renal pelvis lesions, developed metastatic disease. Conclusions Tumor recurrence in a retained ureteral segment after incomplete nephroureterectomy is a significant problem and may contribute to intravesical recurrence or metastatic disease. Complete, en bloc resection is imperative to minimize these risks. .


Subject(s)
Adult , Aged , Aged, 80 and over , Female , Humans , Male , Middle Aged , Carcinoma, Transitional Cell/pathology , Carcinoma, Transitional Cell/surgery , Nephrectomy/methods , Ureteral Neoplasms/pathology , Ureteral Neoplasms/surgery , Neoplasm Grading , Neoplasm Recurrence, Local , Neoplasm Staging , Risk Factors , Time Factors , Ureter/pathology , Ureter/surgery
15.
Pesqui. vet. bras ; 32(8): 761-771, ago. 2012. ilus, tab
Article in Portuguese | LILACS | ID: lil-649525

ABSTRACT

Com o objetivo de realizar um estudo abrangente das lesões do sistema urinário em cães e determinar a sua prevalência, epidemiologia, importância clínica e possíveis causas associadas, foram revisados os protocolos de necropsias de cães realizadas no período de janeiro de 1999 a dezembro de 2010 no LPV-UFSM. Nesse período foram necropsiados 3.189 cães e destes, cerca de 30% apresentaram lesões no sistema urinário. Na maioria dos cães (79,1%) foram observadas lesões únicas e em aproximadamente 21% havia lesões múltiplas no sistema urinário, totalizando 1.373 lesões. Destas, 1.014 (73,8%) foram observadas no rim. No trato urinário inferior (TUI) foram diagnosticadas 359 (26,2%) lesões. Um terço das lesões no sistema urinário dos cães necropsiados foram causa de morte espontânea ou razão para eutanásia (ME/EUT). As demais foram consideradas como achados incidentais. As principais lesões renais diagnosticadas, em ordem decrescente de prevalência, foram: nefrite túbulo-intersticial, infarto, nefrite granulomatosa (parasitária), glomerulonefrite, neoplasmas metastáticos/multicêntricos, pielonefrite/ pielite e hidronefrose. As principais lesões do TUI diagnosticadas, em ordem decrescente de prevalência, foram: cistite, presença de inclusões virais (morbilivírus), urolitíase, dilatação da bexiga, ruptura de bexiga (com uroperitônio) e neoplasmas metastáticos/multicêntricos. As características epidemiológicas como sexo, raça e idade dos cães afetados tiveram variações expressivas de acordo com o tipo de lesão diagnosticada. Uremia foi observada em um número significativo de casos de ME/EUT e foi principalmente secundária a lesões renais.


The aim of this study was to determine the prevalence, epidemiology, clinical significance, and possible associated causes of the urinary system lesions in dogs necropsied between January 1999 and December 2010 at the Laboratório de Patologia Veterinária of the Universidade Federal de Santa Maria (LPV-UFSM). To accomplish this, the necropsy reports were analyzed retrospectively. In this time frame, 3,189 dogs were necropsied and about 30% had lesions in the urinary system. In most of the dogs (79.1%), lesions were single and in about 21% they were multiple, totalizing 1,373 lesions. Out of them, 1,014 (73.8%) were observed in the kidney and 359 (26.2%) were in the lower urinary tract (LUT). One third of the lesions in the urinary system were causes of spontaneous death or reason for euthanasia (SD/EUTH) of the affected dogs. The other two third of the lesions were considered incidental findings. The main renal lesions diagnosed, in descending order of prevalence, were: tubulointerstitial nephritis, infarct, granulomatous nephritis (parasitary), glomerulonephritis, metastatic/multicentric neoplasms, pyelonephritis/pyelitis, and hydronephrosis. The main LUT lesions, in descending order of prevalence, were: cystitis, presence of viral inclusions bodies (morbillivirus), urolithiasis, urinary bladder dilatation, urinary bladder rupture (with uroperitoneum), and metastatic/multicentric neoplasms. Epidemiological aspects such as gender, breed, and age of affected dogs had expressive variations according to the type of lesion diagnosed. Uremia was observed in a significant number of cases of SD/EUTH and was mostly due to renal lesions.


Subject(s)
Animals , Dogs , Urinary Bladder/pathology , Dogs/injuries , Kidney/pathology , Urinary Tract/injuries , Ureter/pathology , Urethra/pathology , Glomerulonephritis/veterinary , Hydronephrosis/veterinary , Kidney Tubular Necrosis, Acute/veterinary , Nephritis/veterinary , Pyelonephritis/veterinary
17.
Urology Annals. 2010; 2 (3): 114-118
in English | IMEMR | ID: emr-129274

ABSTRACT

To determine the efficacy and potential complications of double-J ureteric stents in the treatment of persistent or progressive primary obstructive megaureter in pediatric patients within our institution. A retrospective case-note review of all patients with double-J ureteric stents, between 1997 and 2004, was performed. In all, 38 stents were inserted in 31 patients aged between 2 months and 15 years of age. Complications and results of follow-up investigations and the need for follow-up investigations were recorded. Patients were followed up clinically and radiologically for a minimum of 2 years following stent insertion. Endoscopic placement of double-J ureteric stents in childhood is straightforward and complications are uncommon [8/38 insertions]. In non-resolving or progressive primary non-refluxing megaureter, double-J ureteric stenting alone is effective with resolution of primary non-refluxing megaureter in 66% of cases [25/38 insertions]. Ureteric stenting provides an alternative to early surgery in patients with primary non-refluxing megaureter. The youngest patient in our series was 2 months old at the time of endoscopic ureteric double-J stent insertion. Endoscopic placement of ureteric double-J stents should be considered as a first-line treatment in the management of persistent or progressive non-refluxing megaureter leading to progressive hydronephrosis or pyonephrosis


Subject(s)
Humans , Male , Female , Stents , Endoscopy , Retrospective Studies , Hydronephrosis , Pyonephrosis , Ureter/pathology
18.
Rev. argent. ultrason ; 8(1): 12-16, mar. 2009. ilus
Article in Spanish | LILACS | ID: lil-532799

ABSTRACT

Ante un caso de insuficiencia renal en un recién nacido de 21 días se hallaron en la ecografía imágenes de ectasia renal bilateral, quistes renales, megauréter bilateral y probable ectopia de los mismos.


Subject(s)
Humans , Male , Infant, Newborn , Dilatation, Pathologic , Infant, Newborn, Diseases/diagnosis , Infant, Newborn, Diseases , Urological Manifestations , Ureter/abnormalities , Ureter/pathology
19.
African Journal of Urology. 2008; 14 (1): 54-58
in French | IMEMR | ID: emr-135092

ABSTRACT

We herein report the case of a 38-year-old female patient with crohn's disease who presented with right hydroureteronephrosis associated with extrinsic compression following an episode of acute inflammatory ileocecal disease. Percutaneous nephrostomy was performed then a double-J stent was placed via the antegrade approach and treatment with corticosteroids was started. The patient responded well to the treatment, and the double J stent could be removed 4 months later. At 2 years' follow-up there is no recurrence of the hydroureteronephrosis


Subject(s)
Humans , Female , Crohn Disease , Endoscopy , Ureteral Diseases , Ureter/pathology , Nephrostomy, Percutaneous , Follow-Up Studies
20.
Indian J Pathol Microbiol ; 2007 Oct; 50(4): 819-21
Article in English | IMSEAR | ID: sea-73437

ABSTRACT

Well differentiated villoglandular adenocarcinoma of uterine cervix is a rare tumour which usually occurs in young women. It is considered to be an indolent tumour with favorable prognosis and most of them were treated by conservative procedures. We report a 35 year old lady who came with complaints of 3 months amenorrhoea and an episode of spontaneous bleeding. Urine pregnancy test was negative. Physical examination revealed a cervical polyp. Histopathological findings were consistent with villoglandular papillary adenocarcinoma associated with high grade cervical intraepithelial neoplasia (CIN-3). Left parametrial and left ureteral involvement, proved by biopsy, causing left hydroureteronephrosis was detected. The patient was thus found to be in an advanced stage, stage- III b (FIGO). The patient is currently undergoing radiotherapy. A review of literature showed that only occasional cases showing disease spread have been reported, suggesting caution in the management and regular follow up of the patient.


Subject(s)
Adenocarcinoma, Papillary/complications , Adnexa Uteri/pathology , Adult , Antineoplastic Agents/therapeutic use , Uterine Cervical Dysplasia/complications , Cisplatin/therapeutic use , Female , Humans , Hydronephrosis , Polyps , Ureter/pathology , Uterine Cervical Neoplasms/complications
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