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1.
Int J Gynecol Pathol ; 2018 Jul 27.
Artigo em Inglês | MEDLINE | ID: mdl-30059454

RESUMO

There is a controversy about whether endometriosis-associated ovarian cancer (EAOC) might represent a different entity from the corresponding ovarian cancer occurring de novo, in the absence of endometriosis. This study investigated the clinical-pathologic characteristics and outcome of EAOC compared with other ovarian carcinomas that are not associated with endometriosis (non-EAOC) in a large cohort. Seven hundred two patients meeting the inclusion criteria were further subclassified as group I when patients had ovarian carcinoma associated with or arising within endometriosis (EAOC) and group II when patients had non-EAOC. Age, gross features, histologic type, International Federation of Gynecology and Obstetrics stage, and disease-free survival (DFS) were compared between the groups. One hundred sixty-eight (23.9%) patients had EAOC, whereas 534 (76.1%) patients had non-EAOC. EAOCs were mostly endometrioid and clear cell type. Patients with EAOC were younger, present early, and had a lower rate of recurrence when compared with patients with non-EAOC, P<0.001. Patients with EAOC had longer DFS time, 51.9 mo (95% confidence interval, 44.9-58.8) versus 30.5 mo (95% confidence interval, 27.7-33.3) in non-EAOC patients. The 5 yr Kaplan-Meier estimate of DFS rate was 70% in 166 patients of group I and was 39.3% in 532 patients of group II, P<0.001. On multivariate analysis, International Federation of Gynecology and Obstetrics staging, histologic type, and treatment were the only significant factors affecting the hazards of recurrence. Patients with tumors associated with endometriosis are usually, younger, present early, have lower rate of recurrence, longer DFS, and their tumors are of lower grade and are more likely endometrioid or clear cell carcinoma.

3.
Urol Ann ; 8(1): 95-8, 2016 Jan-Mar.
Artigo em Inglês | MEDLINE | ID: mdl-26834412

RESUMO

"Inflammatory pseudotumor" (IPT) has infrequently been reported in the medical journals. A retrospective analysis was conducted among more than 2,000 bladder tumor cases from January 1999 to December 2012 looking for patients with IPT in the final diagnosis. Six patients were found with median tumor size of 3.5 cm (range: 3-8 cm); computed tomography and/or magnetic resonance imaging was used to diagnose the tumor. All patients had complete resection of the tumors. On a median follow-up of 6 years (range: 2-10 years), no recurrences for IPT have been observed in all patients. We concluded that IPT is a rare disease of the urinary bladder and should be regarded with a high degree of suspicion. Although an extensive workup may be needed for definite diagnosis, it is worth to avoid unnecessary chemoradiotherapy or radical surgeries.

4.
Int Urol Nephrol ; 46(2): 317-22, 2014 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-23928927

RESUMO

PURPOSE: To compare the clinical, pathological and oncological outcome of EAML with classic angiomyolipoma (AML). METHODS: A retrospective review of patients' files with a diagnosis of AML was conducted. Both classic and epithelioid AML were compared as regard the patients' demographics, mode of presentation, tumor features and follow-up data. The accuracy of preoperative radiological diagnosis of EAML and the postoperative pathological data were evaluated. RESULTS: Between November 1988 and July 2012, 1,502 renal masses were treated. Forty-two patients (2.8 %) had renal AML of whom 12 patients (28.6 %) had epithelioid morphology. All the patients with EAML were symptomatic on presentation compared to 16.7 % asymptomatic patients with classic AML. Specific diagnosis of EAML was not suggested based on preoperative radiological evaluation. In one patient, there was a venous tumor extension into the right renal vein; another patient had a solitary pulmonary nodule. Pathological data of EAML patients showed wide areas of necrosis (4 patients), atypia (6 patients), increased mitotic figures (2 patients), nuclear anaplasia, enlarged nuclei and prominent nucleoli (3 patients), and multilobulated multinucleated giant cells (5 patients). At a median follow-up period of 12 and 9 months for EAML and classic AML groups, respectively, one patient with EAML had evidence of both local recurrence and distant metastasis 3 months following open radical nephrectomy. CONCLUSION: Epithelioid AML is potentially aggressive and usually present as a symptomatic renal mass. It may be misdiagnosed as malignant renal mass on preoperative radiological evaluation.


Assuntos
Angiomiolipoma/patologia , Células Epitelioides/patologia , Neoplasias Renais/patologia , Recidiva Local de Neoplasia/etiologia , Inoculação de Neoplasia , Adolescente , Adulto , Idoso , Angiomiolipoma/diagnóstico por imagem , Angiomiolipoma/cirurgia , Feminino , Humanos , Neoplasias Renais/diagnóstico por imagem , Neoplasias Renais/cirurgia , Masculino , Pessoa de Meia-Idade , Índice Mitótico , Necrose/patologia , Metástase Neoplásica , Nefrectomia , Radiografia , Estudos Retrospectivos , Carga Tumoral , Adulto Jovem
5.
Biomed Res Int ; 2013: 912413, 2013.
Artigo em Inglês | MEDLINE | ID: mdl-23878820

RESUMO

INTRODUCTION: The aim of this report is to study the graft and patient survival in a large cohort of recipients with an analysis of factors that may affect the final outcomes. METHODS: Between March 1976 and March 2008, 1967 consecutive live-donor renal transplants were carried out. Various variables that may have an impact on patients and/or graft survival were studied in two steps. Initially, a univariate analysis was carried out. Thereafter, significant variables were embedded in a stepwise regression analysis. RESULTS: The overall graft survival was 86.7% and 65.5%, at 5 and 10 years, respectively. The projected half-life for grafts was 17.5 years and for patients was 22 years. Five factors had an independent negative impact on graft survival: donor's age, genetic considerations, the type of primary immunosuppression, number of acute rejection episodes, and total steroid dose during the first 3 months after transplantation. CONCLUSIONS: Despite refinements in tissue matching techniques and improvements in immunosuppression protocols, an important proportion of grafts is still lost following living donor kidney transplantation, presumably due to chronic allograft nephropathy.


Assuntos
Rejeição de Enxerto/mortalidade , Sobrevivência de Enxerto , Transplante de Rim/mortalidade , Doadores Vivos/estatística & dados numéricos , Complicações Pós-Operatórias/mortalidade , Insuficiência Renal Crônica/mortalidade , Insuficiência Renal Crônica/cirurgia , Adulto , Idoso , Idoso de 80 Anos ou mais , Comorbidade , Egito/epidemiologia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Prevalência , Prognóstico , Medição de Risco , Fatores de Risco , Taxa de Sobrevida , Resultado do Tratamento , Adulto Jovem
6.
Eur Urol ; 60(3): 572-7, 2011 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-21684070

RESUMO

BACKGROUND: Controversy exists regarding the optimal extent of lymphadenectomy and the number of lymph nodes to be retrieved at radical cystectomy (RC). OBJECTIVE: To compare the disease-free survival of patients with standard lymphadenectomy (endopelvic region composed of the internal, external iliac, and obturator groups of lymph nodes) versus extended lymphadenectomy (up to the level of origin of the inferior mesenteric artery) at RC in a prospective cohort of patients at a single, high-volume center. DESIGN, SETTING, AND PARTICIPANTS: Prospective data were collected from 400 consecutive patients treated with RC for bladder cancer by two high-volume surgeons at Mansoura Urology and Nephrology Center. Of the 400 patients, 200 (50%) received extended lymphadenectomy and the other 200 (50%) underwent standard lymphadenectomy at RC. The patients did not receive any neoadjuvant or adjuvant therapy. MEASUREMENTS: Patient characteristics and outcomes are evaluated. RESULTS AND LIMITATIONS: Median patient age for the entire group was 53.0 yr. Ninety-six patients (24.0%) had lymph node metastases. Median follow-up was 50.2 mo. Estimates of 5-yr disease-free survival in the extended lymphadenectomy group were 66.6% compared with 54.7% for patients with standard lymphadenectomy (p = 0.043). Extended lymphadenectomy was associated with better disease-free survival after adjusting for the effects of standard pathologic features (p = 0.02). When restricting the analyses to lymph node-positive patients, patients with extended lymphadenectomy had much better 5-yr disease-free survival compared with patients with standard lymphadenectomy (48.0% vs 28.2%; p = 0.029). The study was nonrandomized. CONCLUSIONS: Extended lymphadenectomy is associated with better disease-free survival for bladder cancer patients with endopelvic lymph node involvement and should be considered in these patients.


Assuntos
Cistectomia , Excisão de Linfonodo/métodos , Neoplasias da Bexiga Urinária/cirurgia , Adulto , Idoso , Distribuição de Qui-Quadrado , Cistectomia/efeitos adversos , Cistectomia/mortalidade , Intervalo Livre de Doença , Egito , Feminino , Humanos , Estimativa de Kaplan-Meier , Excisão de Linfonodo/efeitos adversos , Excisão de Linfonodo/mortalidade , Metástase Linfática , Masculino , Pessoa de Meia-Idade , Modelos de Riscos Proporcionais , Estudos Prospectivos , Análise de Regressão , Medição de Risco , Fatores de Risco , Taxa de Sobrevida , Fatores de Tempo , Resultado do Tratamento , Neoplasias da Bexiga Urinária/mortalidade , Neoplasias da Bexiga Urinária/secundário
7.
Urology ; 76(4): 946-51, 2010 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-20708784

RESUMO

OBJECTIVES: Bilateral Wilms' tumors represent a therapeutic challenge. The primary aim of management is eradication of the neoplasm and preservation of renal function. We present our experience in the management of such cases in a single-center experience. METHODS: This was a retrospective study of 22 patients with histologically proven bilateral nephroblastoma who were treated from 1993 to 2008 at our center. Of the 22 patients, 12 were girls and 10 were boys, with a median age of 3 years (range 1-9); 19 had a synchronous presentation and 3 a metachronous presentation. Of the 22 patients, 6 underwent initial surgical resection followed by chemotherapy and 16 underwent initial biopsy and preoperative chemotherapy. The final oncologic and renal outcomes were assessed. RESULTS: The median follow-up period was 3 years (range 1-11). Of the 22 patients, 8 died, for an overall survival rate of 63.5%. The survival for the initial chemotherapy and initial surgery groups was essentially similar. Of all the variables studied, unfavorable histologic findings had a significant negative effect on survival. Of the 5 patients with unfavorable histologic findings, 4 died during the follow-up period. The median volume of preserved renal parenchyma was 40%. All patients had good renal function during follow-up, except for 1 patient who had undergone bilateral nephrectomy. CONCLUSIONS: Bilateral Wilms' tumors impose 2 conflicting issues: elimination of the pathology and preservation of the renal function. Currently, treatment regimens involving initial chemotherapy followed by conservative surgery can achieve these goals in an important proportion of patients.


Assuntos
Neoplasias Renais/epidemiologia , Neoplasias Primárias Múltiplas/epidemiologia , Segunda Neoplasia Primária/epidemiologia , Tumor de Wilms/epidemiologia , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Quimioterapia Adjuvante , Criança , Pré-Escolar , Terapia Combinada , Dactinomicina/administração & dosagem , Doxorrubicina/administração & dosagem , Egito/epidemiologia , Etoposídeo/administração & dosagem , Feminino , Seguimentos , Humanos , Ifosfamida/administração & dosagem , Lactente , Estimativa de Kaplan-Meier , Neoplasias Renais/tratamento farmacológico , Neoplasias Renais/cirurgia , Masculino , Mesna/administração & dosagem , Terapia Neoadjuvante , Neoplasias Primárias Múltiplas/tratamento farmacológico , Neoplasias Primárias Múltiplas/cirurgia , Segunda Neoplasia Primária/tratamento farmacológico , Segunda Neoplasia Primária/cirurgia , Nefrectomia/métodos , Nefrectomia/estatística & dados numéricos , Estudos Retrospectivos , Resultado do Tratamento , Vincristina/administração & dosagem , Tumor de Wilms/tratamento farmacológico , Tumor de Wilms/cirurgia
8.
J Pediatr Surg ; 44(9): 1750-3, 2009 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-19735820

RESUMO

PURPOSE: The aim of the study was to report the experience with renal cell carcinoma (RCC) in children. MATERIALS AND METHODS: We conducted a retrospective study on renal adenocarcinoma cases treated in our center between 1993 and 2008. The age limit was established at 15 years. We collected data on personal history, diagnostic age, sex, clinical presentation, tumor laterality, diagnostic procedure, and tumor stage according to TNM classification proposed by the International Union Against Cancer (2002), surgical technique, pathologic subtype, and outcome. RESULTS: Six children were included in this study (4 girls and 2 boys) with a mean age of 9.5 years (range, 4-14 years). Tumor affected the right side in 4 patients and the left side in 2. Follow-up ranged from 9 to 140 months (mean, 85). Two patients were diagnosed as stage T1aN0M0, another was T1bN2M0, and 2 were T2N0M0, whereas the last one was T3N2M0. Radical nephrectomy was performed in 5 patients, whereas partial nephrectomy was adopted in one patient. The most common histologic subtype was translocation morphology RCC. One patient had local recurrence, whereas the other 5 are currently disease-free. CONCLUSION: Renal cell carcinoma is a rare histologic type of tumor in children, with certain features that differ from those in adults. In general, RCC in children tends to present later than Wilms' tumor and is usually associated with signs and/or symptoms of disease. In localized cases, the treatment of choice is radical nephrectomy.


Assuntos
Carcinoma de Células Renais/diagnóstico , Carcinoma de Células Renais/terapia , Neoplasias Renais/diagnóstico , Neoplasias Renais/terapia , Adolescente , Biópsia , Carcinoma de Células Renais/patologia , Criança , Pré-Escolar , Meios de Contraste , Humanos , Neoplasias Renais/patologia , Estadiamento de Neoplasias , Nefrectomia , Estudos Retrospectivos , Tomografia Computadorizada por Raios X
9.
World J Gastrointest Oncol ; 1(1): 62-8, 2009 Oct 15.
Artigo em Inglês | MEDLINE | ID: mdl-21160776

RESUMO

AIM: To evaluate the relationship between vascular endothelial growth factor (VEGF), p53, and the H-ras oncogene and different clinicopathological parameters in Egyptian patients with Schistosoma-associated transitional cell carcinoma of the bladder. METHODS: The study included 50 patients with transitional cell carcinoma for whom radical cystectomy and urinary diversions were carried out. VEGF and p53 protein expressions were evaluated with an immunohistochemical staining method, and H-ras oncogene mutations were analyzed with a polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) technique. RESULTS: High grade tumors revealed higher p53 immunostaining than low grade tumors (P = 0.016). p53 and VEGF protein expressions, as well as H-ras oncogene mutations, had an insignificant impact on patient outcomes (P = 0.962, P = 0.791, and P = 967, respectively). Cancer extension to regional lymph nodes was associated with poor outcomes (P = 0.008). CONCLUSION: VEGF, p53 and the H-ras oncogene have no relation to patient survival and outcome in Schistosoma-associated transitional cell carcinoma.

10.
Clin Exp Nephrol ; 13(1): 66-72, 2009 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-18716711

RESUMO

BACKGROUND/AIM: This retrospective study was conducted to assess the efficacy and safety of immunosuppression conversion on progression of chronic allograft nephropathy (CAN). METHODS: One-hundred and seventy-four cyclosporin (CsA)-treated renal transplant recipients were studied. Patients were included if they had a biopsy-proven CAN (mild to moderate) with serum creatinine < or =3.5 mg/dL. Patient treatment was switched to either: (A) MMF/reduced dose CsA (MMF for azathioprine (Aza); n = 132); or (B) Aza/Tac for CsA (n = 42). Patient records were checked for graft function and survival, and for co-morbidities after conversion. RESULTS: Mean follow-up before conversion was 52.2 +/- 31.1 and 47.9 +/- 27.4 months for groups A and B, respectively. There was significant deterioration of graft function in group B after five years (P < 0.5). Ten-year actuarial graft survival was 38% in group A and 19% in group B (P = 0.04). Nine patients (five patients and four patients in groups A and B, respectively) started dialysis within 12 months. Tacrolimus-treated patients had a lower insignificant incidence of hyperlipidemia (P = 0.05), but a significantly higher incidence of diabetes mellitus (P = 0.04).There was no significant change or difference in blood pressure between groups. CONCLUSIONS: Our results suggest that in patients with CAN and deteriorating allograft function, CsA minimization and addition of MMF achieved favorable efficacies in retarding the decline of graft function. Further prospective studies with larger cohorts are needed for validation.


Assuntos
Rejeição de Enxerto/prevenção & controle , Sobrevivência de Enxerto/efeitos dos fármacos , Imunossupressores/administração & dosagem , Nefropatias/tratamento farmacológico , Transplante de Rim/efeitos adversos , Adulto , Azatioprina/administração & dosagem , Doença Crônica , Ciclosporina/administração & dosagem , Progressão da Doença , Quimioterapia Combinada , Feminino , Rejeição de Enxerto/etiologia , Humanos , Imunossupressores/efeitos adversos , Estimativa de Kaplan-Meier , Nefropatias/etiologia , Nefropatias/fisiopatologia , Testes de Função Renal , Masculino , Pessoa de Meia-Idade , Ácido Micofenólico/administração & dosagem , Ácido Micofenólico/análogos & derivados , Estudos Retrospectivos , Tacrolimo/administração & dosagem , Fatores de Tempo , Transplante Homólogo , Resultado do Tratamento
11.
Exp Clin Transplant ; 7(4): 228-32, 2009 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-20353372

RESUMO

OBJECTIVES: The aim of this retrospective study was to characterize the patients who experienced borderline rejection. MATERIALS AND METHODS: Patients with a minimum follow-up of 2 years were enrolled in this study. Forty-seven patients out of 106 patients with borderline rejection (after exclusion of those with associated chronic interstitial fibrosis) were compared with patients with acute cellular rejection grade 1 (n = 650), and patients free of rejection episodes (n = 444) regarding the different characteristics. RESULTS: Patients aged 20 years or younger were frequently in borderline rejection group than other groups (which was statistically significant) (P = .001). Significant differences were found in recipient and donor ages, consanguinity, pretransplant blood transfusion, and immunosuppression plan. Most patients in borderline rejection group received triple immunosuppression therapy than other groups (P = .001). Univariate and multivariate regression analysis of different variables on graft survival in borderline rejection patients revealed that none of them was statistically significant. CONCLUSIONS: Borderline rejection is a frequent finding in biopsy-proven acute rejection after kidney transplant. Time of occurrence, frequency, treatment or not, and response to therapy were not predictors to graft survival.


Assuntos
Rejeição de Enxerto/patologia , Sobrevivência de Enxerto , Transplante de Rim , Doença Aguda , Adolescente , Adulto , Biópsia , Criança , Pré-Escolar , Feminino , Rejeição de Enxerto/etiologia , Humanos , Estimativa de Kaplan-Meier , Transplante de Rim/efeitos adversos , Doadores Vivos , Modelos Logísticos , Masculino , Pessoa de Meia-Idade , Valor Preditivo dos Testes , Estudos Retrospectivos , Medição de Risco , Fatores de Risco , Índice de Gravidade de Doença , Fatores de Tempo , Transplante Homólogo , Resultado do Tratamento , Adulto Jovem
12.
Ann Transplant ; 13(4): 46-54, 2008.
Artigo em Inglês | MEDLINE | ID: mdl-19034223

RESUMO

BACKGROUND: This retrospective study was conducted to assess the efficacy and safety of immunosuppression conversion on progression of chronic allograft nephropathy (CAN). MATERIAL/METHODS: One hundred-seventy four cyclosporin (CsA)-treated renal transplant recipients were studied. Patients were included if they had a biopsy-proven CAN (mild to moderate) with serum creatinine < or =3.5 mg/dL. Patients were treated with either: (A) MMF/reduced dose CsA [MMF for azathioprine (Aza)] (n=132); (B) Aza/Tac for CsA (n=42). Patient records were checked for graft function and survival, co-morbidities after conversion. RESULTS: Mean follow-up before conversion was 52.2+/-31.1 and 47.9+/-27.4 month in-group A and B, respectively. There was a significant deterioration of graft function in-group B after 5-years (P<0.5). Ten-year actuarial graft survival was 38% in-group A and 19% in-group B (P=0.04). Nine patients started dialysis within 12 months. Tacrolimus-treated patients had a lower insignificant incidence of hyperlipidemia (P=0.05), but a significantly higher incidence of diabetes mellitus (P=0.04).There was no significant change or difference in blood pressure between groups. CONCLUSIONS: Our results suggest that in patients with CAN and deteriorating allograft function, CsA minimization and addition of MMF achieved favorable efficacies in retarding the decline of graft function. Further prospective studies with larger cohorts are needed for validation.


Assuntos
Imunossupressão/métodos , Imunossupressores/uso terapêutico , Transplante de Rim/fisiologia , Adulto , Azatioprina/uso terapêutico , Ciclosporina/uso terapêutico , Diabetes Mellitus/etiologia , Diabetes Mellitus/prevenção & controle , Quimioterapia Combinada , Feminino , Seguimentos , Taxa de Filtração Glomerular , Sobrevivência de Enxerto/imunologia , Humanos , Hiperlipidemias/etiologia , Hiperlipidemias/prevenção & controle , Imunossupressão/efeitos adversos , Imunossupressores/efeitos adversos , Falência Renal Crônica/etiologia , Falência Renal Crônica/cirurgia , Transplante de Rim/imunologia , Masculino , Ácido Micofenólico/análogos & derivados , Ácido Micofenólico/uso terapêutico , Estudos Retrospectivos , Tacrolimo/uso terapêutico , Transplante Homólogo/imunologia , Transplante Homólogo/fisiologia , Resultado do Tratamento
13.
Exp Clin Transplant ; 6(3): 203-10, 2008 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-18954298

RESUMO

OBJECTIVES: This retrospective study was done to assess the efficacy and safety of immunosuppression conversion on progression of chronic allograft nephropathy. MATERIALS AND METHODS: One hundred seventy-four cyclosporine-treated renal transplant recipients were studied. Patients were included if they had biopsy-proven chronic allograft nephropathy (mild to moderate) with a serum creatinine level of 300 micromol/L or less. The treatments groups were (1) mycofenolate mofetil and reduced-dosage cyclosporine (group MMF/CsA; n=132) and (2) azathioprine and reduced-dosage tacrolimus (group Aza/Tac; n=42). Patient records were checked for graft function, survival, and comorbidities after conversion. RESULTS: Mean follow-up before conversion was 52.2 -/+ 31.1 and 47.9 -/+ 27.4 month in groups MMF/CsA and Aza/Tac, respectively. There was a significant deterioration of graft function in group Aza/Tac after 5 years (P < .05). Ten-year actuarial graft survival in group MMF/CsA was 38%; in group Aza/Tac it was 19% (P = .04). Nine patients started dialysis within 12 months. Tacrolimus-treated patients had a lower insignificant incidence of hyperlipidemia (P = .05) but a significantly higher incidence of diabetes mellitus (P = .04). There were no significant changes or differences in blood pressure between the groups. CONCLUSIONS: Our results suggest that in patientswith chronic allograft nephropathy and deteriorating allograft function, cyclosporine minimization and addition of mycofenolate mofetil achieve favorable effects in retarding the decline of graft function. Further prospective studies with larger cohorts are needed for validation.


Assuntos
Imunossupressores/uso terapêutico , Transplante de Rim/imunologia , Adulto , Azatioprina/efeitos adversos , Azatioprina/uso terapêutico , Estudos de Coortes , Ciclosporina/efeitos adversos , Ciclosporina/uso terapêutico , Relação Dose-Resposta a Droga , Feminino , Seguimentos , Teste de Histocompatibilidade , Humanos , Imunossupressão/métodos , Imunossupressores/efeitos adversos , Falência Renal Crônica/etiologia , Falência Renal Crônica/cirurgia , Transplante de Rim/mortalidade , Transplante de Rim/patologia , Masculino , Ácido Micofenólico/efeitos adversos , Ácido Micofenólico/uso terapêutico , Estudos Prospectivos , Reoperação/estatística & dados numéricos , Reprodutibilidade dos Testes , Análise de Sobrevida , Tacrolimo/efeitos adversos , Tacrolimo/uso terapêutico , Transplante Homólogo , Resultado do Tratamento
14.
Transplantation ; 86(8): 1139-42, 2008 Oct 27.
Artigo em Inglês | MEDLINE | ID: mdl-18946354

RESUMO

The pattern of posttransplant malignancy varies among transplant units. We report on our single-center experience. Between 1976 and 2007, 1866 kidney transplantations were carried out (1390 males and 476 females, mean age 29.84+/-10.47 years). Recipients who developed posttransplant malignancy were evaluated (74 patients, 3.97%). Furthermore, their data were compared with those of the malignancy-free recipients (1792 patients). Kaposi sarcoma was the commonest type (36.8%) and had the shortest transplant-to-malignancy period (mean 2.84 years). The lesions were only cutaneous in 75% of cases. Skin cancers were the fourth among posttransplant malignancies (9.2%) and 85.7% of cases were basal cell carcinoma. In our series, age and prior blood transfusion were identified as independent risk factors for the development of posttransplant malignancy. In conclusion, the prevalence and type of posttransplant malignancy vary because of many factors including environmental and genetic factors. In our series, Kaposi sarcoma was the commonest type and, therefore, needs further evaluation.


Assuntos
Transplante de Rim/efeitos adversos , Neoplasias/etiologia , Adolescente , Adulto , Fatores Etários , Egito/epidemiologia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Neoplasias/mortalidade , Prevalência , Modelos de Riscos Proporcionais , Estudos Retrospectivos , Medição de Risco , Fatores de Risco , Sarcoma de Kaposi/etiologia , Fatores de Tempo , Reação Transfusional
15.
J Urol ; 180(1): 121-7, 2008 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-18485392

RESUMO

PURPOSE: We performed a critical analysis of the results of radical cystectomy for invasive bladder carcinoma treated at 1 center. MATERIALS AND METHODS: Between 1970 and 2000, 2,090 men and 630 women with invasive bladder cancer were treated with 1-stage radical cystectomy and urinary diversion. Followup ranged from 0 to 34.2 years with a mean of 5.5 +/- 5.7. Survival data were correlated to patient and tumor characteristics using univariate and multivariate analysis. RESULTS: Postoperative mortality was 2.6%. Squamous tumors accounted for 49.4% of cases, transitional cell carcinoma for 36.4% and adenocarcinoma for 9.6%. Regional lymph nodes were involved in 20.4% of cases. The 5 and 10-year disease-free survival rates were 55.5% and 50.03%, respectively. Evidence was provided that tumor stage, histological grade and lymph node status are the only independent variables which affect survival probability. CONCLUSIONS: Contemporary cystectomy can be performed with minimal mortality. Radical cystectomy for organ confined disease is followed by good therapeutic results and enhances the possibilities for functional restoration. With stage progression there is a stepwise reduction in survival probability. The radical operation can provide disease-free survival for an important subgroup of node positive cases (27.3%). Additional therapy is needed to improve the oncological outcome for advanced locoregional disease.


Assuntos
Carcinoma de Células de Transição/cirurgia , Cistectomia , Neoplasias da Bexiga Urinária/cirurgia , Feminino , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Fatores de Tempo
16.
Int Urol Nephrol ; 39(3): 923-8, 2007.
Artigo em Inglês | MEDLINE | ID: mdl-17447154

RESUMO

BACKGROUND: Cyclosporine (CsA) was found to be efficient in decreasing proteinuria in both steroid-dependent and steroid-resistant nephrotic patients. We aimed to explore the potential long-term benefits and hazards of CsA and their predictors among a large group of nephrotic patients. METHODS: In this retrospective analysis, we included 197 pediatric patients with idiopathic nephrotic syndrome (INS) of whom 103 were steroid dependent and 94 steroid resistant. RESULTS: CsA induced complete remission in 132 (67%) and partial response in 13 (6.6%). Cyclosporine was received for a period of 22.16 +/- 12.21 months. Univariate analysis showed that the response to CsA was significantly better in steroid-dependent children, in minimal change disease (MCD), diffuse mesangial proliferative glomerulonephritis (DMP) and focal segmental glomerulosclerosis (FSGS) than in other pathological lesions and in those who had lower quantities of pretreatment proteinuria. Only the prior response to steroids and concomitant use of ketoconazole with CsA were valid predictors for better response to CsA with multivariate analysis. Discontinuation of the drug in 40 patients resulted in relapse in 26 patients while the remaining 14 patients maintained remission. Renal dysfunction developed in 18 patients of whom 12 recovered completely on drug discontinuation. Thirty-seven patients developed hypertension. Multivariate analysis showed that all side-effects were significantly more prevalent in CsA-resistant patients. CONCLUSION: CsA is effective and well tolerated in the long-term treatment of INS in children, however two thirds of cases showed relapse after CsA discontinuation.


Assuntos
Ciclosporina/uso terapêutico , Imunossupressores/uso terapêutico , Síndrome Nefrótica/tratamento farmacológico , Adolescente , Criança , Pré-Escolar , Feminino , Humanos , Lactente , Masculino , Análise Multivariada , Estudos Retrospectivos , Resultado do Tratamento
17.
Am J Nephrol ; 26(5): 491-6, 2006.
Artigo em Inglês | MEDLINE | ID: mdl-17095864

RESUMO

BACKGROUND/AIMS: Protocol biopsy is an important strategy which assesses the histological changes that can occur in the renal allograft and adversely affect its outcome. We aimed to evaluate histological changes in long-term living donor transplants. METHODS: Elective biopsies were done for 120 live donor renal transplant recipients with well-functioning grafts and no rejection history at least 1 year or more after transplant. All patients had serum creatinine levels <2 mg/dl. The histopathological findings using the chronic allograft damage index score were correlated with different clinical and immunological parameters. RESULTS: Chronic tubulointerstitial fibrosis was the most prevalent finding (85% of cases), mostly of mild degree. Normal biopsies were reported in only 7.5% of cases, whereas chronic cyclosporine nephrotoxicity was detected in 5.8% of biopsies. Posttransplant hypertension was significantly correlated with glomerulosclerosis, and posttransplant diabetes with glomerulosclerosis, mesangial matrix increase, tubular atrophy and interstitial fibrosis. The main risk factors associated with a high chronic allograft damage index score were DR mismatching, posttransplant diabetes and time of biopsy. All histopathological changes increased with advancing donor age and declining graft function. CONCLUSION: Elective biopsies showed that histopathological findings do exist even with stable renal function that may pave the way for predicting long-term graft outcome.


Assuntos
Transplante de Rim/patologia , Doadores Vivos , Adulto , Fatores Etários , Biópsia , Doença Crônica , Nefropatias Diabéticas/epidemiologia , Feminino , Humanos , Testes de Função Renal , Masculino , Pessoa de Meia-Idade , Proteinúria/epidemiologia , Fatores Sexuais , Transplante Homólogo/patologia
18.
Int Urol Nephrol ; 38(2): 237-42, 2006.
Artigo em Inglês | MEDLINE | ID: mdl-16868689

RESUMO

OBJECTIVE: To study proliferating cell nuclear antigen (PCNA) over expression and angiogenesis with their relationship to tumor parameters in squamous cell carcinoma of the urinary bladder in patients who underwent radical cystectomy. PATIENTS AND METHODS: The mean age of the patients was 53.53 years (range; 29-70 years) and the males were 98 of 154. Sections from paraffin embedded tissues were retrieved and stained with antibodies against PCNA for proliferation and CD34 for angiogenesis using immunohistochemical technique. Fisher's exact test was used to evaluate the relationship between categorical variables and the Kaplan-Meier procedure was used to assess survival outcomes. The Cox regression model was used for multivariate analysis. RESULTS: The median follow up period was 65 months. microvessel density (MVD), PCNA, tumor grade, P-stage, DNA ploidy, lymph node status had a significant impact on the 5-year survival of patients in univariate analysis. In Cox proportional hazard model, MVD, PCNA, DNA ploidy and stage sustained their significant impact on survival of the patients. CONCLUSIONS: MVD, PCNA, DNA ploidy and stage are independent prognostic factors in patients with squamous cell carcinoma of the urinary bladder.


Assuntos
Neovascularização Patológica , Valor Preditivo dos Testes , Antígeno Nuclear de Célula em Proliferação/análise , Neoplasias da Bexiga Urinária/diagnóstico , Neoplasias da Bexiga Urinária/mortalidade , Adulto , Idoso , Antígenos CD34/análise , Capilares , Carcinoma de Células Escamosas/diagnóstico , Carcinoma de Células Escamosas/mortalidade , Feminino , Seguimentos , Regulação Neoplásica da Expressão Gênica , Humanos , Imuno-Histoquímica , Masculino , Pessoa de Meia-Idade , Proteínas de Neoplasias/análise , Estadiamento de Neoplasias , Ploidias , Prognóstico , Antígeno Nuclear de Célula em Proliferação/genética , Análise de Sobrevida
19.
Int Urol Nephrol ; 37(3): 439-45, 2005.
Artigo em Inglês | MEDLINE | ID: mdl-16307314

RESUMO

Electron microscopy and immunohistochemical techniques are powerful tools for the determination of tissue origin. Both techniques have been used in the current experiment for histogenesis of renal cell carcinoma. Fifty kidney tumors were subjected to immunohistochemical detection for intermediate filaments cytokeratin and vimentin, which are normally expressed in epithelial tissue and mesenchymal tissues, respectively. Twenty cases of the above were examined by electron microscopy for detection of ultrastructure features. From each kidney, two specimens were taken, one from the diseased area and another far from it to serve as a control. Immunohistochemical study revealed in cases of renal cell carcinoma, cytokeratin and vimentin were expressed alone in 44% of cases, and 40% of cases, respectively. Twelve percent of cases were coexpressed with both cytokeratin and vimentin. Electron microscopic study of diseased specimens revealed the expression of desmosomes which was observed in almost all tumor specimens. The expression of the vimentin in some cases either alone or with cytokeratin was interpreted as a change in the characters of some tumor cells which indicates the need for additional techniques in such cases to get the proper interpretation. The prevalence of the expression of cytokeratin and the persistence existence of desmosomes indicate the epithelial origin of the tumor. This data is very beneficial for determination of line of therapy and follow up of the patients. The results confirm the power of combined use of both immunohistochemistry and electron microscopy in the field of histogenesis.


Assuntos
Carcinoma de Células Renais/patologia , Neoplasias Renais/patologia , Carcinoma de Células Renais/metabolismo , Humanos , Imuno-Histoquímica , Queratinas/metabolismo , Córtex Renal/metabolismo , Neoplasias Renais/metabolismo , Vimentina/metabolismo
20.
Am J Transplant ; 5(10): 2531-8, 2005 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-16162204

RESUMO

UNLABELLED: Between May 2001 and January 2003, 132 live donor renal allotransplant recipients were included in a prospective, randomized controlled trial where they were divided into two groups. All patients received steroids and basiliximab induction therapy. For maintenance immunosuppression, tacrolimus and sirolimus were used in group A. In group B, mycophenolate mofetil (MMF) and sirolimus were utilized. Patients were followed up for a minimum of 24 months. One-year patient and graft survival rates were not significantly different between group A (96.9%, 92.3%) and group B (100%, 98.4%), respectively. However, the incidence of biopsy-proven acute rejection was less in group B but the difference was not statistically significant (13.5% vs. 18.5% in group A). Statistically significant better renal function was encountered among group B patients at two years post-transplantation as measured by serum creatinine (1.25 vs. 1.43 mg/dl; P = 0.017) and calculated glomerular filtration rate (GFR) (94.9 vs. 79.6 ml/min; P = 0.005). One year protocol biopsies showed insignificant differences relative to chronic allograft damage index (CADI) between either group (Group A: 2.41 vs. Group B: 2.69; P = 0.436). CONCLUSION: Similar outcome was noted among patients in whom calcineurin inhibitors were not included in their immunosuppressive regimen. The long term impact of this observation on graft survival and function needs longer follow up.


Assuntos
Inibidores de Calcineurina , Transplante de Rim/métodos , Sirolimo/administração & dosagem , Tacrolimo/administração & dosagem , Adulto , Anticorpos Monoclonais/uso terapêutico , Basiliximab , Biópsia , Creatina/sangue , Creatinina/sangue , Feminino , Taxa de Filtração Glomerular , Sobrevivência de Enxerto , Humanos , Imunossupressores/farmacologia , Imunossupressores/uso terapêutico , Rim/patologia , Doadores Vivos , Masculino , Pessoa de Meia-Idade , Ácido Micofenólico/administração & dosagem , Ácido Micofenólico/análogos & derivados , Estudos Prospectivos , Proteínas Recombinantes de Fusão/uso terapêutico , Fatores de Tempo , Condicionamento Pré-Transplante , Transplante Homólogo/métodos , Resultado do Tratamento
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