RESUMEN

BACKGROUND: The shortage of cadaveric kidney donors has prompted transplant teams to expanding the donor selection criteria. The usage of pediatric cadaveric kidneys is one of those expanded criteria. But the main concern is the probability of hyperfiltration syndrome due to small renal mass of pediatric donors. OBJECTIVE: To compare the graft and patient survivals, post-transplantation complications, rate and severity of proteinuria secondary to hyperfiltration injury and the kidney growth of recipients who underwent transplantation from adult (group 1) and pediatric deceased donors (group 2). METHODS: In this historical cohort study, each group contains 36 patients. Outcome measures included patient and graft survivals, quality of graft function as assessed by serum creatinine (SCr) and estimated GFR (eGFR), surgical complications, proteinuria that was detected by routine urinalysis and then confirmed by a 24-h urine protein >150 mg, blood pressure, and kidney length and volume measured by early and follow-up ultrasonography. RESULTS: The mean donor age in groups 1 and 2 was 36 and 6.5 years, respectively. 9 (25%) kidneys taken from pediatric donors (group 2) were offered en-bloc. The mean follow-up was 28 month. The two groups were not significantly different in terms of the incidence of DGF, rate of acute rejection, 1-year graft survival, SCr and eGFR levels, rates of surgical complications requiring surgical interventions, development of proteinuria, and rate of post-transplantation rise in blood pressure. The mean±SD kidney length within 24 hours of transplantation was significantly higher in group 1 compared to group 2 recipients (112±14 vs. 75±12 mm; p=0.001), but the rate of increase in kidney length in group 2 was significantly higher than that in group 1 recipients (43±4 vs. 10±2 mm; p=0.002) during the follow-up period. 80% of the increase in the kidney size was observed during the first 12 months of surgery; another 20% happened between 12 and 18 months. CONCLUSION: We found that obligatory and compensatory growth of pediatric kidney donors can overcome the concern of hyperfiltration syndrome and that the outcome is the same as adult donors.

RESUMEN

The atypical protein kinase C iota (aPKCι) is an oncoprotein encoded by the PRKCI gene. It has been reported to play multifunctional roles in cellular maintenance, cell proliferation, survival, differentiation and apoptosis. In the present study we aimed to assess the impact of PRKCI rs546950 C>T and rs4955720 C>A polymorphisms on prostate cancer (PCa) risk in a sample of Iranian population. This case-control study was done on 169 patients with pathologically confirmed PCa and 182 benign prostatic hyperplasia (BPH). The PCR-RFLP method was used for detection rs546950 C>T and rs4955720 C>A polymorphisms. Our findings showed that rs546950 polymorphism of PRKCI decreased the risk of PCa in codominant (OR=0.35, 95%CI=0.19-0.64, P<0.001, CT vs CC) and dominant (OR=0.39, 95%CI=0.22-0.69, P=0.001, CT+TT vs CC) inheritance model tested. No significant association was found between rs4955720 C>A polymorphism and PCa. In the combined analysis of these two variants subjects carrying CT/CC, CT/CA, TT/AA and CT/AA significantly decreased the risk of PCa in comparison with rs546950 CC/rs4955720 CC genotype. Haplotype analysis indicated that rs546950T/rs4955720A decreased the risk of PCa compared to CC. In conclusion, the results revealed that PRKCI rs546950 variant decreased the risk of PCa in an Iranian population. Further studies with larger sample sizes and different ethnicities are required to confirm our findings.

Asunto(s)

Isoenzimas/genética , Neoplasias de la Próstata/epidemiología , Neoplasias de la Próstata/genética , Proteína Quinasa C/genética , Adulto , Anciano , Estudios de Casos y Controles , Genotipo , Humanos , Irán/epidemiología , Masculino , Persona de Mediana Edad , Polimorfismo de Nucleótido Simple/genética , Riesgo , Población Blanca/genética

RESUMEN

OBJECTIVES: Immunologic factors are reliable markers for allograft monitoring, because of their seminal role in rejection process. One of these factors is the immunoglobulin (Ig)A anti-Fab of the IgG antibody. This study aimed to evaluate the predictive value of pre- and posttransplant levels of this marker for kidney allograft function and survival. METHODS: Sera samples of 59 living unrelated donor kidney recipients were collected before and after transplantation (days 7, 14, and 30) and investigated for IgA anti-Fab of IgG antibody levels using enzyme-linked immunosorbent assay in relation with allograft outcome. RESULTS: Among 59 patients, 15 cases (25%) including 10 with acute rejection and 5 with chronic rejection episodes showed graft failure during a mean of 5 years of follow-up. High posttransplant levels of IgA anti-Fab antibodies were observed more frequently in patients with stable graft function (SGF) compared with patients with graft failure (P = 2 × 10(-6)). None of patients with acute or chronic rejection episodes had high levels of IgA anti-Fab antibodies at day 30 posttransplant compared with the SGF group (P = 10(-6) and P = .01, respectively). In addition, high levels of IgA anti-Fab antibody correlated with lesser concentration of serum creatinine at 1 month posttransplantation (P = .01). Five-year graft survival was associated with high levels of pre- and posttransplant IgA anti-Fab antibodies (P = .02 and P = .003, respectively). CONCLUSIONS: Our findings indicate the protective effect of higher levels of IgA anti-Fab antibodies regarding to kidney allograft outcomes and long-term graft survival.

Asunto(s)

Rechazo de Injerto/inmunología , Supervivencia de Injerto/inmunología , Inmunoglobulina A/inmunología , Fragmentos Fab de Inmunoglobulinas/inmunología , Trasplante de Riñón , Donadores Vivos , Adulto , Biomarcadores/metabolismo , Ensayo de Inmunoadsorción Enzimática , Femenino , Humanos , Masculino , Periodo Preoperatorio , Estudios Retrospectivos , Factores de Tiempo , Trasplante Homólogo

RESUMEN

OBJECTIVES: To compare the success and complication rates of sonography-guided supine percutaneous nephrolithotomy (PCNL) versus prone standard technique (fluoroscopic guidance) in a randomized controlled trial. SUBJECTS AND METHODS: Between April 2009 and August 2011, 92 candidates for PCNL were randomly divided into two groups: 46 B-mode sonography-guided supine PCNL (group A) and 46 standard fluoroscopic-guided prone PCNL (group B). Demographic, clinical and perioperative patient characteristics were analyzed, and complications and success rates were compared between the two approaches. RESULTS: Preoperative parameters were comparable in the two groups. The primary success rate was 79.0 and 65.2% in groups A and B, respectively, after one session of PCNL (p = 0.485). Sonography-guided access failed in 3 cases (failure rate 6.5% in group A vs. 0% in group B). Mean hospital stay (2.48 days for group A vs. 2.95 days for group B; p = 0.039) and mean nephrostomy tube stay time (1.79 days for group A vs. 2.56 days for group B; p = 0.007) were significantly prolonged in the standard technique. Postoperative fever was more prevalent in the standard PCNL group (p = 0.024), but no significant difference was observed in other complications between the two groups. CONCLUSION: In this study, sonography-guided supine PCNL was presented as a safe and effective technique, similar to standard PCNL, with comparable success and complication rates. In addition, using this technique eliminates the possible harmful impacts of radiation on the surgical team and decreases postoperative fever.

Asunto(s)

Cálculos Renales/cirugía , Nefrostomía Percutánea/métodos , Posicionamiento del Paciente , Posición Supina , Ultrasonografía Intervencional , Adulto , Anciano , Distribución de Chi-Cuadrado , Femenino , Fiebre/etiología , Fiebre/prevención & control , Fluoroscopía , Humanos , Irán , Cálculos Renales/diagnóstico por imagen , Tiempo de Internación , Masculino , Persona de Mediana Edad , Nefrostomía Percutánea/efectos adversos , Radiografía Intervencional , Factores de Riesgo , Factores de Tiempo , Resultado del Tratamiento , Adulto Joven

RESUMEN

OBJECTIVE: The use of laparoscopic partial nephrectomy (LPN) in patients with tumours >4 cm remains to be further evaluated. We report our experience with LPN in tumours >4 cm compared with tumours ≤4 cm. MATERIALS AND METHODS: This is a retrospective study of data from all LPN patients operated from 2003 to 2008. Inclusion criteria were a single organ confined contrast enhancing mass/Bosniac III-IV cyst. Hospital admission records were used to extract operative and follow-up data. Patients were grouped into group A: ≤4 cm (32 patients, 53% of total), and group B: >4 cm (28 patients, 47% of total). RESULTS: A total of 60 patients (mean ± SD age, 47.4 ± 13.4 years; M/F, 36/24) were included. Mean ± SD tumour size was 31.5 ± 7.3 mm and 51.6 ± 10.9 mm in groups A and B, respectively. (P < 0.001) Malignant pathology was present in 22 (69%) and 16 patients (57%) in groups A and B, respectively. (P > 0.05) There was no statistically significant difference in age, gender, pre-operative creatinine, estimated glomerular filtration rate (eGFR), and other investigated pre-operative characteristics between study groups. (all P > 0.05) Nor any difference was observed regarding operative and pathologic (warm ischaemia time, operation duration, transfusion, positive margins, and malignant histology) as well as post-operative variables (re-hospitalization, post-operative complications, hospital stay, or eGFR changes). CONCLUSION: The results of this study supports the feasibility and comparability of operative and post-operative early complications for LPN when applied to tumours >4 cm in selected patients compared with tumours ≤4 cm.

Asunto(s)

Neoplasias Renales/patología , Neoplasias Renales/cirugía , Laparoscopía , Nefrectomía/métodos , Femenino , Humanos , Laparoscopía/efectos adversos , Masculino , Persona de Mediana Edad , Nefrectomía/efectos adversos , Complicaciones Posoperatorias/epidemiología , Estudios Retrospectivos

RESUMEN

Renal transplantation has been advocated as the treatment of choice for end-stage renal disease. Immunosuppression increases the incidence of cancer and promotes the growth of neoplasms in solid organ recipients. There have been a few reports on the incidence of cancer from transplant registries. It is difficult to precisely compare the incidence with that in the general population using data from small, single-center studies. Thus, we sought to study the prevalence of genitourinary cancer development in Iranian renal transplant recipients. We collected data from 5 kidney transplant centers in Iran between 1984 and 2008, seeking to detect the incidence, type, and outcome of cancers after kidney transplantation. Only histologically confirmed tumors, which occurred after renal transplantation, were included in the analysis. Of the 5532 patients who underwent kidney transplantation, genitourinary tumors were detected in 21 subjects (0.38%), namely, 12 males and 9 females. Transitional cell carcinoma (TCC) of the bladder, the most common genitourinary cancer (n = 7) was followed by renal cell carcinoma (RCC; n = 5), ovarian cancer (n = 3), breast cancer (n = 3), prostate cancer (n = 1), seminoma (n = 1), and uterine cancer (n = 1). The overall mean age of the patients was 46 +/- 12 years (range, 19-72 years) and the median time to diagnosis after transplantation was 72 months (range, 4-240 months). Seven patients died during the follow-up. There was a male predominance among TCC of the bladder and RCC (5:2 and 4:1, respectively). In conclusion, TCC of the bladder was the most common genitourinary tumor following kidney transplantation. It was predominant in male patients.

Asunto(s)

Neoplasias Renales/epidemiología , Trasplante de Riñón/efectos adversos , Neoplasias Urogenitales/epidemiología , Adulto , Anciano , Neoplasias de la Mama/epidemiología , Neoplasias de la Mama Masculina/epidemiología , Carcinoma de Células Renales/epidemiología , Carcinoma de Células Transicionales/epidemiología , Femenino , Humanos , Masculino , Persona de Mediana Edad , Neoplasias Ováricas/epidemiología , Neoplasias Testiculares/epidemiología , Factores de Tiempo , Neoplasias de la Vejiga Urinaria/epidemiología , Neoplasias Uterinas/epidemiología , Adulto Joven

RESUMEN

BACKGROUND: Tuberculosis (TB) is an important cause of morbidity and mortality in renal transplant recipients and, because of its infrequency and the lack of medical awareness, it is usually misdiagnosed. This study was carried out to determine frequency and weight of multiple risk factors for post kidney transplantation TB. METHODS: A total of 44 cases (0.3%), out of 12,820 patients from 12 major kidney transplantation centers in Iran from 1984 to 2003, were compared with 184 healthy transplant subjects who were transplanted by the same surgical team. RESULTS: The mean age of cases and controls was 37.7 (13-63) and 35.6 (8-67) years (P=0.3), respectively. The mean duration of pre-transplantation hemodialysis was 30.3 (3-168) months in cases and 18.2 (1-180) months in controls (P=0.03). A positive past history of TB was detected in 2 cases and 1 control (P=0.3). The mean doses of initial and maintenance immunosuppressive drugs in cases and controls were not significantly different. A total of 25 cases (56.8%) and 60 controls (32.6%) had rejection before diagnosis of TB (P=0.004; OR=2.7, CI(95%): 1.3-5.6). CONCLUSIONS: To our knowledge, this is the first study that demonstrated an increase in the risk of post-transplant TB by increasing the duration of pre-transplant hemodialysis and the number of post-transplant rejection episodes as 2 immunocompromised states. Further study is needed to clarify our new findings, specifically in relation to different immunosuppressive regimens.

Asunto(s)

Trasplante de Riñón/efectos adversos , Tuberculosis Pulmonar/epidemiología , Tuberculosis/epidemiología , Adolescente , Adulto , Estudios de Casos y Controles , Femenino , Rechazo de Injerto , Humanos , Irán/epidemiología , Masculino , Persona de Mediana Edad , Diálisis Renal , Factores de Riesgo , Trasplante Homólogo/efectos adversos , Tuberculosis/microbiología , Tuberculosis Pulmonar/microbiología

RESUMEN

This study was designed to estimate the burden of urologic diseases in the Islamic Republic of Iran as a practical method for defining public health priorities. Using World Health Organization guidelines for national burden of disease studies, 6 steps were performed: selecting diseases to include; dynamic modelling of diseases; gathering data about urologic diseases; computing the local disability weights of urologic diseases; data analysis with DisMod II; and computing the disability-adjusted life years for each disease. Renal calculus, acute cystitis, chronic prostatitis, benign prostate hyperplasia, male infertility and adult polycystic kidney disease comprised the greatest burden.

Asunto(s)

Costo de Enfermedad , Personas con Discapacidad/estadística & datos numéricos , Prioridades en Salud/organización & administración , Salud Pública/estadística & datos numéricos , Enfermedades Urológicas , Adolescente , Adulto , Distribución por Edad , Anciano , Anciano de 80 o más Años , Causas de Muerte , Niño , Preescolar , Interpretación Estadística de Datos , Femenino , Estado de Salud , Humanos , Incidencia , Lactante , Irán/epidemiología , Masculino , Persona de Mediana Edad , Evaluación de Necesidades , Vigilancia de la Población , Prevalencia , Años de Vida Ajustados por Calidad de Vida , Sistema de Registros , Distribución por Sexo , Encuestas y Cuestionarios , Enfermedades Urológicas/epidemiología , Enfermedades Urológicas/prevención & control

RESUMEN

This study was designed to estimate the burden of urologic diseases in the Islamic Republic of Iran as a practical method for defining public health priorities. Using World Health Organization guidelines for national burden of disease studies, 6 steps were performed: selecting diseases to include; dynamic modelling of diseases; gathering data about urologic diseases; computing the local disability weights of urologic diseases; data analysis with DisMod II; and computing the disability-adjusted life years for each disease. Renal calculus, acute cystitis, chronic prostatitis, benign prostate hyperplasia, male infertility and adult polycystic kidney disease comprised the greatest burden

Asunto(s)

Prioridades en Salud , Organización Mundial de la Salud , Evaluación de la Discapacidad , Consenso , Enfermedades Urológicas

RESUMEN

BACKGROUND AND PURPOSE: Laparoscopic surgery is widely accepted for nephrectomy in adult renal transplantation. The success of this technique has not been compared with open donor nephrectomy (ODN) in children. PATIENTS AND METHODS: In this randomized clinical trial, 40 adult kidney donors were randomly divided into two groups: 20 cases of laparoscopic donor nephrectomy (LDN) and 20 of ODN. Recipients had an age of <15 years. Our exclusion criteria were previous renal transplantation, hemolytic uremic syndrome, focal segmental glomerulosclerosis, oxalosis in the recipients, and multiple renal arteries bilaterally in donors. RESULTS: All donor nephrectomies were completed as scheduled, and no patients undergoing LDN required conversion to open nephrectomy. No patients in either the ODN or the LDN group required reoperation. Acute rejection was diagnosed in six patients receiving kidneys procured by ODN (30%) and 4 patients (20%) receiving kidneys obtained by LDN (P = 0.3). No recipients or donors died. At 1 year, the graft survival times in the ODN and LDN groups were 310.8 +/- 28.8 and 302.7 +/- 28.2 days, respectively (P = 0.8). CONCLUSION: At our medical center, pediatric LDN recipients had graft outcomes similar to those of ODN recipients. We recommend LDN for harvest of kidneys for pediatric recipients at experienced centers.

Asunto(s)

Trasplante de Riñón/métodos , Riñón/patología , Laparoscopía/métodos , Donadores Vivos , Nefrectomía/métodos , Recolección de Tejidos y Órganos/métodos , Adolescente , Niño , Preescolar , Femenino , Rechazo de Injerto , Humanos , Lactante , Masculino , Resultado del Tratamiento

RESUMEN

BACKGROUND AND PURPOSE: Laparoscopic pyeloplasty has been accepted as a helpful option for the treatment of primary ureteropelvic junction (UPJ) obstruction. We report the results of laparoscopic pyeloplasty in cases with secondary UPJ obstruction after failed open pyeloplasty. PATIENTS AND METHODS: Between September 2003 and March 2006, 18 patients with secondary UPJ obstruction secondary to failed open surgery who had undergone laparoscopic pyeloplasty using different techniques were enrolled in this study. The mean age and male-to-female ratio were 29.8 years (range 5-65 years) and 14: 4, respectively. Pain, fever, duration of the operation, changes in renal function, and rate of complications were reviewed. RESULTS: The mean operation time and average hospital stay were 254 +/- 82 minutes and 7.2 days (range 3-12 days), respectively. The mean follow-up was 14.1 months (range 4-25.5 months). No intraoperative complication occurred. Flank pain, urinary-tract infection, and severe hydronephrosis decreased from 88.9% to 22.2%, 33.3% to 0, and 83.3% to 16.6%, respectively. After laparoscopic pyeloplasty, 100% of patients had improvement in renal function. The number of patients with >50% washout on the DTPA scan 10 and 20 minutes after furosemide injection were 0 and 2 before the operation and 5 and 12 after the operation (27.8% and 62.5% increment, respectively). CONCLUSION: Laparoscopic pyeloplasty can be used with acceptable success rate in secondary UPJ obstruction in patients with previous open pyeloplasty.

Asunto(s)

Pelvis Renal/cirugía , Laparoscopía/métodos , Obstrucción Ureteral/cirugía , Obstrucción Ureteral/terapia , Procedimientos Quirúrgicos Urológicos/métodos , Adolescente , Adulto , Anciano , Niño , Femenino , Humanos , Riñón/fisiopatología , Tiempo de Internación , Masculino , Persona de Mediana Edad , Procedimientos Quirúrgicos Mínimamente Invasivos/métodos , Complicaciones Posoperatorias , Colgajos Quirúrgicos , Resultado del Tratamiento

RESUMEN

Slow graft function (SGF) may occur during the early post-transplant period. In this paper, we present our findings regarding SGF after pediatric renal transplantation and its predictive variables. From 1985 to 2004, a total of 300 pediatric renal transplants were performed at our institution. A total of 10 cases with SGF and 50 controls that were operated by the same surgeons were enrolled in this study. The mean age of the recipients and donors was 11.4 (3-15 yr) and 28.05 yr (20-50 yr), respectively. All kidneys were retrieved from living donors. We compared patients with SGF with controls regarding four independent variables: age difference between donors and recipients, serum hemoglobin difference between donors and recipients, mean blood pressure (systolic blood pressure + 2 [diastolic blood pressure]/3) difference between donors and recipients, and weight difference between donors and recipients. The mean age of recipients was 10.5 +/- 4.1 in SGF group and 11.6 +/- 2.5 in control group (p = 0.4). The differences between donors and recipients regarding weight and mean blood pressure in subjects with SGF were not higher than other patients (42 kg vs. 37.4 kg, p = 0.4; -3 mmHg vs. -4.1 mmHg, p = 0.8). The mean hemoglobin difference between donors and recipients was 6.3 +/- 2.1 g/dL in SGF group and 6.7 +/- 2.3 g/dL in control group (p = 0.6). The differences between donors and recipients regarding age, weight, mean blood pressure and serum hemoglobin level are not predictive variables for SGF.

Asunto(s)

Rechazo de Injerto/fisiopatología , Trasplante de Riñón , Donadores Vivos , Insuficiencia Renal/cirugía , Adulto , Presión Sanguínea/fisiología , Niño , Femenino , Estudios de Seguimiento , Rechazo de Injerto/tratamiento farmacológico , Rechazo de Injerto/mortalidad , Humanos , Irán/epidemiología , Masculino , Estudios Retrospectivos , Factores de Riesgo , Tasa de Supervivencia , Resultado del Tratamiento

RESUMEN

Despite advances in immunosuppressive therapy in the past decade, allograft rejection remains the primary cause for kidney graft failure. Cytokines are known to be important mediators in renal allograft outcome. The aim of the present study was to ascertain whether interleukin (IL)-4, IL-10, and transforming growth factor (TGF)-beta cytokine gene polymorphisms contributed to kidney graft outcome. We evaluated single nucleotide polymorphism in IL-4 (-1098G/T, -590C/T, -33C/T), IL-10 (-1082A/G, -819C/T, -592A/C), and TGF-beta (codon 10 and 25) in 100 renal transplant recipients and 139 normal healthy control using polymerase chain reactions based on sequence-specific primers. Recipients were clinically characterized as rejection episode (RE) versus stable graft function (SGF). The results showed the frequencies of IL-4 -33 T allele in the RE, SGF, and control group to be 7%, 73%, and 28%, respectively. IL-10 -592 A allele frequency was 39% in RE, 26% in SGF, and 28% in the control group. TGF-beta codon 10 T allele was 39% in RE, 35% in SGF, and 53% in control group. In conclusion, this study suggested that some cytokine gene alleles reflected SGF among kidney transplant recipients.

Asunto(s)

Interleucina-10/genética , Interleucina-4/genética , Trasplante de Riñón/fisiología , Polimorfismo Genético , Factor de Crecimiento Transformador beta/genética , Adulto , Anciano , Femenino , Humanos , Enfermedades Renales/clasificación , Enfermedades Renales/cirugía , Masculino , Persona de Mediana Edad , Trasplante Homólogo , Resultado del Tratamiento

RESUMEN

OBJECTIVE: To assess the incidence of prostate adenocarcinoma in patients undergoing radical cystoprostatectomy due to bladder cancer in Iranian men. MATERIALS AND METHODS: Fifty cystoprostatectomy specimens removed due to bladder malignancy (2004-2005) at two referral centers (Shaheed Modarress and Shaheed Labbafinejad Hospitals, Tehran, Iran) were examined for the coincidental finding of prostate cancer (PCa). At the time of surgery the patient's serum PSA was less than 4 ng/mL and there were no suspicious lesions by digital rectal examination. Pathologic grade, stage, morphometric volume, number of tumor foci and association with areas of high grade prostatic intraepithelial neoplasia (HGPIN) were assessed by light microscopy. All specimens were totally embedded and whole-mounted. Clinically significant cancers were defined as tumors with >or= 0.5 mL volume, Gleason pattern 4 or 5, pT3, positive surgical margin, and multifocality > 3. RESULTS: Incidentally detected cancer was found in 7 (14%) of cystoprostatectomy specimens. HGPIN was present in 1 (14.3%) of the cystoprostatectomies with incidentally detected prostate cancer. None of cystoprostatectomies without prostate cancer had HGPIN. Four (57%) of the detected cancers were significant. CONCLUSION: We conclude that incidentally detected prostate cancer in Iran is lower than the rates reported in other countries. Further studies are warranted for better declaration of variability of prostate cancer between different ethnic groups.

Asunto(s)

Adenocarcinoma/diagnóstico , Antígeno Prostático Específico/sangre , Neoplasias de la Próstata/diagnóstico , Neoplasias de la Vejiga Urinaria/cirugía , Adenocarcinoma/complicaciones , Adulto , Anciano , Anciano de 80 o más Años , Cistectomía , Humanos , Hallazgos Incidentales , Irán , Masculino , Persona de Mediana Edad , Estadificación de Neoplasias , Estudios Prospectivos , Prostatectomía , Neoplasias de la Próstata/complicaciones , Sensibilidad y Especificidad , Neoplasias de la Vejiga Urinaria/complicaciones

RESUMEN

OBJECTIVE:To assess the incidence of prostate adenocarcinoma in patients undergoing radical cystoprostatectomy due to bladder cancer in Iranian men. MATERIALS AND METHODS: Fifty cystoprostatectomy specimens removed due to bladder malignancy (2004-2005) at two referral centers (Shaheed Modarress and Shaheed Labbafinejad Hospitals, Tehran, Iran) were examined for the coincidental finding of prostate cancer (PCa). At the time of surgery the patient's serum PSA was less than 4 ng/mL and there were no suspicious lesions by digital rectal examination. Pathologic grade, stage, morphometric volume, number of tumor foci and association with areas of high grade prostatic intraepithelial neoplasia (HGPIN) were assessed by light microscopy. All specimens were totally embedded and whole-mounted. Clinically significant cancers were defined as tumors with 0.5 mL volume, Gleason pattern 4 or 5, pT3, positive surgical margin, and multifocality > 3. RESULTS: Incidentally detected cancer was found in 7 (14 percent) of cystoprostatectomy specimens. HGPIN was present in 1 (14.3 percent) of the cystoprostatectomies with incidentally detected prostate cancer. None of cystoprostatectomies without prostate cancer had HGPIN. Four (57 percent) of the detected cancers were significant. CONCLUSION: We conclude that incidentally detected prostate cancer in Iran is lower than the rates reported in other countries. Further studies are warranted for better declaration of variability of prostate cancer between different ethnic groups.

Asunto(s)

Adulto , Anciano , Anciano de 80 o más Años , Humanos , Masculino , Persona de Mediana Edad , Adenocarcinoma/diagnóstico , Antígeno Prostático Específico/sangre , Neoplasias de la Próstata/diagnóstico , Neoplasias de la Vejiga Urinaria/cirugía , Adenocarcinoma/complicaciones , Cistectomía , Hallazgos Incidentales , Irán , Estadificación de Neoplasias , Estudios Prospectivos , Prostatectomía , Neoplasias de la Próstata/complicaciones , Sensibilidad y Especificidad , Neoplasias de la Vejiga Urinaria/complicaciones

RESUMEN

BACKGROUND AND PURPOSE: Patients undergoing percutaneous nephrolithotomy (PCNL) sometimes have purulent fluid in the puncture site in spite of having no signs or symptoms of infection preoperatively. We report the safety and effectiveness of PCNL in 45 patients with staghorn renal stones and incidental purulent fluid in the pelvicaliceal system. PATIENTS AND METHODS: Of 1264 patients who underwent PCNL at our medical center from February 2002 to May 2006, 45 patients had purulent fluid in the initial puncture. These patients were asymptomatic, and the preoperative work-up did not suggest infection. In 29 patients (group 1), stone removal was accomplished during the first session, while for 16 patients (group 2), a nephrostomy tube remained in place and stone removal occurred 3 to 5 days later when results of urine and nephrostomy fluid cultures were negative. We studied preoperative findings, stone-free rate, intraoperative and postoperative complications, and final outcome of these patients. RESULTS: The stone-free rate was almost similar in the two groups (86.2% v 81.25%, P = 0.9). In groups 1 and 2, three (10.3%) and two (12.5%) patients experienced low-grade fever for 12 to 24 hours (P = 0.179). In group 1, urine cultures revealed Escherichia coli in three patients and Pseudomonas aeruginosa in two patients, while 24 (82.7%) patients had negative fluid cultures. In group 2, results of urine cultures showed E coli in two patients and Klebsiella pneumoniae in one patient; results of urine cultures of 13 (81.2%) patients were negative (P = 0.78). Mean operative time was 70 minutes in both groups. No intraoperative or postoperative complications other than fever were seen in both groups. CONCLUSION: In patients who undergo PCNL, purulent fluid may be found incidentally in the puncture site. PCNL may be performed with full antibiotic coverage at the same session.

Asunto(s)

Líquidos Corporales/microbiología , Infecciones por Escherichia coli/complicaciones , Cálculos Renales/cirugía , Infecciones por Klebsiella/complicaciones , Nefrostomía Percutánea/métodos , Infecciones por Pseudomonas/complicaciones , Adolescente , Adulto , Anciano , Antibacterianos/uso terapéutico , Escherichia coli/aislamiento & purificación , Infecciones por Escherichia coli/tratamiento farmacológico , Infecciones por Escherichia coli/microbiología , Femenino , Estudios de Seguimiento , Humanos , Cálculos Renales/complicaciones , Cálculos Renales/orina , Infecciones por Klebsiella/tratamiento farmacológico , Infecciones por Klebsiella/microbiología , Klebsiella pneumoniae/aislamiento & purificación , Masculino , Persona de Mediana Edad , Infecciones por Pseudomonas/tratamiento farmacológico , Infecciones por Pseudomonas/microbiología , Pseudomonas aeruginosa/aislamiento & purificación , Estudios Retrospectivos , Factores de Riesgo , Resultado del Tratamiento , Orina/microbiología

RESUMEN

PURPOSE: To assess the impact of warm ischemia time (WIT) on delayed graft function (DGF), graft loss, and graft function in laparoscopic donor nephrectomy (LDN). PATIENTS AND METHODS: We prospectively studied 100 kidney recipients from LDN donors from 2001 to 2003. For comparison of graft outcome with different extents of WIT, recipients were divided into three groups: group A received kidneys having 4 to 6 minutes, group B kidneys having >6 to 10 minutes, and group C kidneys having >10 minutes of WIT. The median follow-up was 415 days (range 11-791) days. RESULTS: The mean kidney WIT was 8.7 minutes (range 4-17 minutes). Graft outcome (DGF, graft loss, and median serum creatinine) was not significantly different in the three groups. CONCLUSIONS: Different extents of WIT in LDN, within the range of our study, were not associated with an adverse outcome in kidney transplantation.

Asunto(s)

Supervivencia de Injerto , Trasplante de Riñón , Donadores Vivos , Isquemia Tibia , Adolescente , Adulto , Anciano , Femenino , Estudios de Seguimiento , Humanos , Laparoscopía , Masculino , Persona de Mediana Edad , Nefrectomía , Estudios Prospectivos , Factores de Tiempo , Isquemia Tibia/efectos adversos

RESUMEN

PURPOSE: To demonstrate a less expensive approach for laparoscopic donor nephrectomy. MATERIALS AND METHODS: Left donor nephrectomy was done transperitoneally in flank position. Renal vein and artery were exposed and prepared for nephrectomy. Nondisposable trocars and instruments were used. The adrenal vein was clipped and its arteries were bipolar coagulated. Both renal artery and vein were clip-ligated using three medium large nonautomatic metallic clips and divided, instead of using rather expensive vascular endostapler. Kidney was hand-extracted from suprapubic incision (no Endobag was used). RESULTS: Donor nephrectomy was performed in 341 donors. Mean warm ischemia time was 8.17 minutes. Mean operative time was 260.3 minutes. Conversion and reoperation was required in 2.1% and 3.8% of donors, respectively. Ureteral complications were observed in 2.1% of recipients. No vascular accident occurred from pedicular vessels. One-year graft survival in recipients was 92.6%. By this approach, at least $600 was saved in each nephrectomy. CONCLUSION: Laparoscopic donor nephrectomy can be performed with a less expensive setup without adverse effects on graft outcome. Vascular control using nonautomatic clips instead of more costly vascular endostapler and also hand extraction of the kidney is safe, practical, and economical.

Asunto(s)

Donadores Vivos , Nefrectomía/métodos , Circulación Renal , Instrumentos Quirúrgicos , Suturas , Recolección de Tejidos y Órganos/métodos , Estudios de Seguimiento , Humanos , Laparoscopía , Arteria Renal/cirugía , Venas Renales/cirugía , Estudios Retrospectivos , Seguridad , Factores de Tiempo

RESUMEN

PURPOSE: To compare the long-term results of kidney transplantation from living unrelated donors (LURDs) with that from living related donors (LRDs). MATERIALS AND METHODS: From 1984 to 2004, we performed 2155 kidney transplantations of which 374 were from LRDs and 1760 from LURDs. We reviewed and compared the long-term data from these cases. RESULTS: The LURD group included 64.2% men with an overall mean age of 33.46 +/- 14.61 (range 3 to 76) years. Laparoscopic donor nephrectomy was performed in 329 cases (18.7%) with mean follow-up of 45.68 +/- 46.80 months. The LRD group included 66.5% of male recipients with overall mean age of 28.97 +/- 9.58 (range 9 to 65) years. Laparoscopic donor nephrectomy was performed in 12 cases (3.2%) of LRDs with mean follow-up of 81.15 +/- 67.03 months. One-, 3-, 5-, 10-, and 15-year graft survivals among LRDs were 91.6%, 81.7%, 76.4%, 64.4%, and 48.4%; and for LURDs, 91.5%, 86.7%, 81.4%, 68.2%, and 53.2%, respectively (P = .07). Patient survivals for 1, 3, 5, 10, and 15 years in LRDs were 94.6%, 91.9%, 83%, 79.5%, and 73.9%, and in LURDs were 93.6%, 91.7%, 89.3%, 84%, and 76.4%, respectively (P = .14). CONCLUSION: The results of living unrelated kidney transplantation upon long-term follow-up with a large number of cases were as good as living related kidney transplantation. The organ shortage can be alleviated by using living unrelated kidney transplantation. To our knowledge this is the largest experience with long-term follow-up reported from one center to date.

Asunto(s)

Trasplante de Riñón/fisiología , Donadores Vivos , Adolescente , Adulto , Anciano , Niño , Preescolar , Familia , Humanos , Trasplante de Riñón/mortalidad , Laparoscopía , Persona de Mediana Edad , Nefrectomía , Estudios Retrospectivos , Análisis de Supervivencia , Factores de Tiempo , Recolección de Tejidos y Órganos/métodos , Resultado del Tratamiento

RESUMEN

PURPOSE: Antireflux surgery for VUR before renal transplantation decreases the risk of post-kidney transplant UTI in pediatric patients with primary vesicoureteral reflux. We studied the risk of post-kidney transplant UTI in patients with or without surgical correction of VUR before transplantation compared to patients without VUR. MATERIALS AND METHODS: We compared 12 patients who had VUR corrected before transplantation (group 1) to 17 patients with VUR who did not undergo antireflux surgery before transplantation (group 2) and 36 patients undergoing renal transplantation without VUR (group 3). A total of 10 patients in group 1 (83.3%) and 10 in group 2 (58.8%) had high grade VUR. RESULTS: Eight patients in group 1 (66.7%), 6 in group 2 (35.3%) and 33 in group 3 (91.7%) remained free of febrile UTI during followup (p = 0.00). Among patients with high grade VUR 6 in group 1 and 1 in group 2 remained UTI-free (p = 0.02). A total of 33 patients in the control group (91.7%) remained free of febrile UTI, an incidence that was significantly lower compared to group 1 (p = 0.03) and group 2 (p = 0.00). Of the patients with high grade VUR 3 in group 1 (30%) and 4 in group 2 (40%) experienced recurrent febrile UTIs (p = 0.64). CONCLUSIONS: Even after surgical correction of VUR before transplantation the frequency of febrile UTI remained higher than that in kidney transplant recipients without VUR. In cases of high grade VUR reimplantation before renal transplantation decreased the rate of febrile UTI but it was still higher than the level of risk in the control group.

Asunto(s)

Trasplante de Riñón/efectos adversos , Pielonefritis/etiología , Pielonefritis/prevención & control , Reflujo Vesicoureteral/cirugía , Adolescente , Niño , Femenino , Humanos , Masculino , Cuidados Preoperatorios , Reflujo Vesicoureteral/complicaciones