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1.
Transplant Proc ; 40(1): 47-9, 2008.
Artículo en Inglés | MEDLINE | ID: mdl-18261544

RESUMEN

OBJECTIVES: Digital subtract angiography is the gold standard for anatomic assessment of renal vasculature for living renal donors. However, multidetector-row computerized tomography (MDCT) is less invasive than digital subtract angiography and provides information of kidney stones and other intra-abdominal organs. In this study, preoperative MDCT angiography results were compared with the peroperative findings to evaluate the accuracy of MDCT for the evaluation of renal anatomy. METHODS: From December 2002 to May 2007, all 60 consecutive living kidney donors were evaluated with MDCT angiography preoperatively. We reported the number and origin of renal arteries, presence of early branching arteries, and any intrinsic renal artery disease. Renal venous anatomy was evaluated for the presence of accessory, retroaortic, and circumaortic veins using venous phase axial images. The calyces and ureters were assessed with delayed topograms. The results of the MDCT angiography were compared with the peroperative findings. RESULTS: A total of 67 renal arteries were seen peroperatively in 60 renal units. Preoperative MDCT angiography detected 64 of them. The two arteries not detected by MDCT had diameters less than 3 mm. Anatomic variations were present in nine veins, five of which were detected by CT angiography. Sensitivity of MDCT angiography for arteries and veins was 95% and 93%, respectively. Positive predictive values were 100% for both arteries and veins. CONCLUSION: MDCT angiography offers a less invasive, rapid, and accurate preoperative investigation modality for vascular anatomy in living kidney donors. It also provides sufficient information about extrarenal anatomy important for donor surgery.


Asunto(s)
Riñón , Donadores Vivos , Arteria Renal/anatomía & histología , Circulación Renal , Tomografía Computarizada por Rayos X , Adulto , Femenino , Humanos , Imagenología Tridimensional , Masculino , Persona de Mediana Edad , Nefrectomía/métodos , Selección de Paciente , Cuidados Preoperatorios , Arteria Renal/diagnóstico por imagen , Estudios Retrospectivos , Recolección de Tejidos y Órganos/métodos
2.
Transplant Proc ; 40(1): 77-80, 2008.
Artículo en Inglés | MEDLINE | ID: mdl-18261550

RESUMEN

INTRODUCTION: Our aim in this study was to investigate the prevalence and correlation with coronary artery calcium scores (CACS) and erectile dysfunction (ED) among hemodialysis patients. PATIENTS AND METHODS: Thirty-five male patients with chronic renal failure were selected to participate in this study. All patients underwent examinations for CACS using 16-channel multidetector computed tomography. The presence and severity of ED were determined by calculating the erectile function domain of the self-administered International Index of Erectile Function (IIEF). RESULTS: The patients' ages ranged from 22 to 78 with a mean of 51.6 years. The mean duration of hemodialysis was 75.7 months (range = 12 to 232). Twenty-six patients had a history of one or more systemic diseases. The prevalence of any level of ED was 82.9% for all hemodialysis patients, and severe ED, 40%. The CACS was significantly higher among patients with severe ED (P = .032). The IIEF-5 score was also shown to have a moderate negative correlation with the CACS (r = -.420, P = .012). Age, duration of hemodialysis, body mass index, diabetes mellitus, hypertension, coronary heart diseases, hyperlipidemia, thyroid disease, depression, tobacco consumption, and medication were not associated with the presence of ED (P > .05). CONCLUSION: ED is prevalent in hemodialysis patients. Although many possible factors contribute to ED, the severity of ED increases with greater CACS.


Asunto(s)
Calcinosis/epidemiología , Enfermedad Coronaria/epidemiología , Disfunción Eréctil/epidemiología , Fallo Renal Crónico/terapia , Diálisis Renal/efectos adversos , Adulto , Anciano , Calcinosis/complicaciones , Calcinosis/diagnóstico por imagen , Enfermedad Coronaria/complicaciones , Enfermedad Coronaria/diagnóstico por imagen , Disfunción Eréctil/complicaciones , Disfunción Eréctil/diagnóstico por imagen , Humanos , Fallo Renal Crónico/complicaciones , Masculino , Persona de Mediana Edad , Prevalencia , Factores de Tiempo , Tomografía Computarizada por Rayos X
3.
Transplant Proc ; 40(1): 85-6, 2008.
Artículo en Inglés | MEDLINE | ID: mdl-18261552

RESUMEN

INTRODUCTION: Renal transplantation in patients with lower urinary tract dysfunction (LUTD) of various origins is a challenging issue in the field of pediatric transplantation. We report our single-center experience to evaluate patient and graft survivals as well as the risks of the surgery and immunosuppressive therapy. PATIENTS AND METHODS: Among 70 pediatric transplant patients, 11 displayed severe LUTD. Videourodynamic tests were performed on all patients preoperatively as well as postoperatively if required. The cause of urologic disorders were neurogenic bladder (n = 5) and urethral valves (n = 6). Clean intermittent catheterization (CIC) was needed in six patients to empty the bladder. To achieve a low-pressure reservoir with adequate capacity pretransplantation augmentation ileocystoplasty was created in four patients and gastrocystoplasty in one patient. Three of the patients received kidneys from cadaveric and eight from living donors. All patients were treated with calcineurin-based immunosuppressive therapy. RESULTS: The mean age at transplantation was 15 +/- 4.7 years. The median follow-up after transplantation was 36 months (6 to 62 months). At their last visit the median creatinine level was 0.95 mg/dL (0.8 to 2.4 mg/dL). Three patients had recurrent symptomatic urinary tract infections who had augmented bladder on CIC. One patient with ileocystoplasty who developed urinary leak and ureteral stricture in the early postoperative period was treated by an antegrade J stent. CONCLUSION: Severe LUTD carried high risks for the grafted kidney. However, our data suggested that renal transplantation is a safe and effective treatment modality, if the underlying urologic diseases properly managed during the transplantation course. Since surgery and follow-up is more complicated, patient compliance and experience of transplantation team have significant impacts on outcomes.


Asunto(s)
Fallo Renal Crónico/cirugía , Enfermedades de la Vejiga Urinaria/cirugía , Enfermedades Urológicas/cirugía , Adolescente , Adulto , Niño , Femenino , Estudios de Seguimiento , Humanos , Fallo Renal Crónico/etiología , Masculino , Estudios Retrospectivos , Cateterismo Urinario , Enfermedades Urológicas/clasificación , Enfermedades Urológicas/complicaciones , Enfermedades Urológicas/etiología
4.
Transplant Proc ; 40(1): 129-31, 2008.
Artículo en Inglés | MEDLINE | ID: mdl-18261566

RESUMEN

INTRODUCTION: The recurrence of primary disease in transplantation is a well-known problem. We report our single-center experience to assess the frequency of the recurrence of primary glomerulonephritis in children after renal transplantation. PATIENTS AND METHODS: Medical reports of 14 children with primary glomerular disease were evaluated. Among the 14 grafts were 10 from living related and four from cadaveric donors. Ten were diagnosed as focal segmental glomerulosclerosis (FSGS), two membranoproliferative glomerulonephritis (MPGN), and two polyarteritis nodosa (PAN). The original diagnosis was biopsy-proven in every case. All patients were treated with calcineurin-based immunosuppressive therapy. RESULTS: The mean age was 15.5 +/- 5.4 years. The median transplantation duration was 47 months; however, one of the FSGS patient had hyperacute rejection. Five years later she received a second graft with a serum creatinine of 0.7 mg/dL at 7 years after transplantation. Posttransplant recurrence of FSGS was confirmed in two patients (20%), who were treated with plasmapheresis with no improvement of proteinuria, two FSGS patients had thromboses after transplantation. One had a cardiac thrombosis with heterozygote MTHFR mutation and one, a renal artery thrombosis and loss of graft with prothrombin 20210A mutation. They all have functioning grafts except these two. We did not observe recurrence of PAN or MPGN in patients. CONCLUSION: Although the number of patients is quite small, our recurrence rate was compatible with the previous reports. Additionally, we strongly recommend evaluation of all risk factors for thrombosis and give appropriate anticoagulation.


Asunto(s)
Trasplante de Riñón/estadística & datos numéricos , Adolescente , Adulto , Cadáver , Niño , Glomerulonefritis Membranoproliferativa/cirugía , Glomeruloesclerosis Focal y Segmentaria/cirugía , Humanos , Inmunosupresores/uso terapéutico , Fallo Renal Crónico/etiología , Fallo Renal Crónico/cirugía , Trasplante de Riñón/inmunología , Trasplante de Riñón/fisiología , Donadores Vivos , Poliarteritis Nudosa/cirugía , Estudios Retrospectivos , Resultado del Tratamiento
5.
Transplant Proc ; 38(2): 541-2, 2006 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-16549169

RESUMEN

Our aim was to investigate the semen variables and hormone profiles among transplant patients who received kidneys during adolescence. Seven postpubertal transplant patients who underwent successful renal transplantation during adolescence (13-19 years; 3 were preemptive) were enrolled in our clinical follow-up. Serum levels of prolactin, luteinizing hormone (LH), follicle-stimulating hormone (FSH), and testosterone were checked together with the semen analysis. The ages of the patients ranged from 18 to 25 years (median, 22 years). The median age was 15 years (range, 12-18 years) at initial presentation. The median time between initial diagnosis and transplantation was 12 months (range, 2-60 months). The median follow-up after transplantation was 51 months (range, 23-134 months). Three of the seven patients had unilateral low testicular volume. The renal function tests were within normal limits, as well as serum levels of prolactin, FSH, LH, and testosterone. Sperm counts ranged from 0.2 to 55 million/mL (median, 1.7 million/mL). Only 1 patient (14.2%) had normal sperm parameters. Oligoteratozoospermia (low sperm count and defects in morphology) was observed in 1/7 (14.2%), asthenoteratozoospermia (low levels of motility and defects in morphology) in 1/7 (14.2%), and all parameters were abnormal in 4/7 (57.1%) cases. Our data suggest that in contrast to adult patients, semen variables are severely affected and spermatogenesis does not improve after renal transplantation when the patient was subjected to uremia before or during adolescence, the crucial period for spermatogenesis.


Asunto(s)
Hormonas/sangre , Trasplante de Riñón/fisiología , Semen/fisiología , Adolescente , Adulto , Hormona Folículo Estimulante/sangre , Estudios de Seguimiento , Humanos , Hormona Luteinizante/sangre , Masculino , Prolactina/sangre , Recuento de Espermatozoides , Testículo/anatomía & histología , Testosterona/sangre
6.
Transplant Proc ; 38(2): 554-5, 2006 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-16549173

RESUMEN

INTRODUCTION: We report our experience with renal transplantation in patients with severe bladder dysfunction who underwent prior augmentation cystoplasty. PATIENTS AND METHODS: Among 58 pediatric patients, three underwent bladder augmentation prior to renal transplantation. The patients' ages at transplantation were 10, 13, and 17. The etiologies of bladder dysfunction were posterior urethral valves in two patients and contracted bladder in one patient. Vesicoureteral reflux was concomitantly present in three patients. Pretransplant ileocystoplasty was created in two patients and gastrocystoplasty in one patient. All patients received kidneys from cadaveric donors and were treated with calcineurin-based immunosuppressive therapy. RESULTS: The patients had normal renal function without hydronephrosis of the transplanted kidney at 13, 22, 49 months follow-up. No patients had morbidity due to technical complications. All the patients were continent. Two of three patients required clean intermittent catheterization from a Mitrofanoff conduit, while one patient spontaneously voids without significant residual urine. Urinary tract infections observed in two patients were successfully treated without any permanent deterioration in graft kidney function. CONCLUSIONS: Our data suggest that augmentation cystoplasty is a safe and effective option to treat patients with end-stage renal disease undergoing kidney transplantation. Experience of the transplantation team with a qualified pediatric urologist is essential due to the potentially high risk of surgical complications during the long term management of these patients.


Asunto(s)
Trasplante de Riñón/métodos , Vejiga Urinaria/cirugía , Adolescente , Niño , Humanos , Fallo Renal Crónico/etiología , Fallo Renal Crónico/cirugía , Vejiga Urinaria/anatomía & histología , Enfermedades de la Vejiga Urinaria/complicaciones , Enfermedades de la Vejiga Urinaria/cirugía
7.
Transplant Proc ; 47(5): 1306-8, 2015 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-26093705

RESUMEN

BACKGROUND: There is an expanding gap between the number of patients listed for kidney transplantation and the number of kidney transplantations performed annually. The use of sensitive imaging methods results in increased discovery of many urologic asymptomatic problems, such as urolithiases, renal cysts, and solid renal masses. This result has brought the question of whether all donors with these urologic disorders should be rejected for donation. METHODS: We retrospectively analyzed donor and recipient records of all living kidney transplantations performed from 2004 to 2014. RESULTS: Among 251 living-related donor kidney transplantations, 51 donors (20.3%) had urologic disorders. Mean donor age was significantly higher in donors with urologic disorders than in the standard donor group (50 y vs 41 y). The identified disorders were 32 renal cysts, 8 urolithiases, 3 renal tumors, 6 adrenal adenomas, and 2 microscopic hematurias. After nephrectomy, the graft kidneys with cysts were inspected carefully and all of the cortical-peripheral cysts were decorticated. Renal tumors were excised in 3 renal units. Transplantations had proceeded after the confirmation of low malignancy potentials of the lesions with safe surgical margins. Two out of 8 patients had undergone stone removal with ex vivo ureteroscopy and 1 by means of pyelotomy incision because of calix neck stenosis. None of those donors and recipients developed clinically significant renal stone disease with a mean follow-up of 28 months. Neither donors nor recipients of asymptomatic microscopic hematuria patients developed any problem with a mean 28 months' follow-up period. CONCLUSIONS: Asymptomatic urologic problems are very common. The significance of these asymptomatic pathologies is unclear. Our results suggest that in a selected group, at least some of these candidates can be accepted for donation.


Asunto(s)
Selección de Donante/estadística & datos numéricos , Trasplante de Riñón , Donadores Vivos/estadística & datos numéricos , Complicaciones Posoperatorias/epidemiología , Enfermedades Urológicas/epidemiología , Adulto , Femenino , Humanos , Masculino , Persona de Mediana Edad , Nefrectomía , Complicaciones Posoperatorias/etiología , Estudios Retrospectivos , Resultado del Tratamiento , Enfermedades Urológicas/patología
8.
Transplant Proc ; 47(2): 363-6, 2015 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-25769574

RESUMEN

BACKGROUND: Increased allograft mass in living donor kidney transplantation has been recognized as a predictor factor of better short-term allograft function. We evaluated whether donor kidney volume adjusted for recipient body weight is associated with long-term allograft function in living donor kidney transplantation. METHODS: We analyzed 67 living donors and their recipients who underwent transplantation between 2003 and 2007. Estimated glomerular filtration rate (eGFR) and serum creatinine levels at 1, 2, 3, 4, and 5 years post-transplantation were recorded for all recipients. Transplanted kidney volumes were measured using 3-D helical computed tomography scanning. A transplant kidney volume-recipient body weight (Vol/Wt) ratio was calculated for each donor-recipient pair. The subjects were divided into tertiles according to Vol/Wt ratios: low (<2.16), medium (2.16-2.88), and high (>2.88). RESULTS: Vol/Wt ratio significantly correlated with recipient eGFR and serum creatinine levels at 1, 2, 3, and 4 years post-transplantation (r = .48, P < .0001; r = .46, P < .0001; r = .47, P < .0001; r = .26, P = .037, respectively, for eGFR; r = -.53, P < .0001; r = -.50, P < .0001; r = -.44, P < .0001; r = -.37, P = .003, respectively, for serum creatinine) but not at 5 years (r = .12, P = .406 for eGFR; r = -.21, P = .110 for serum creatinine). Whereas recipient eGFR increased significantly in a graded fashion among low to high Vol/Wt ratio groups during 1 to 3 years post-transplantation, there was no difference in eGFR values between Vol/Wt ratio groups at 4 and 5 years (P = .21 and .71, respectively). CONCLUSION: Vol/Wt ratio is not associated with long-term allograft function in living donor kidney transplantation.


Asunto(s)
Trasplante de Riñón/métodos , Riñón/anatomía & histología , Donadores Vivos , Adulto , Aloinjertos , Femenino , Estudios de Seguimiento , Tasa de Filtración Glomerular , Supervivencia de Injerto , Humanos , Riñón/fisiología , Masculino , Tamaño de los Órganos , Estudios Retrospectivos , Factores de Tiempo
9.
Transplant Proc ; 47(4): 1114-6, 2015 May.
Artículo en Inglés | MEDLINE | ID: mdl-26036532

RESUMEN

BACKGROUND: Lower urinary tract dysfunction (LUTD), an important cause of end stage renal disease (ESRD) in children, can adversely affect renal graft survival. We compared renal transplant patients with LUTD as primary renal disease to those without LUTD. METHODS: The data of 60 children who underwent renal transplantation (RTx) between 2000 and 2012 were retrospectively reviewed. All patients with LUTD were evaluated with urodynamic tests preoperatively; 15 patients required clean intermittent catheterization and 9 patients underwent augmentation cystoplasty before RTx. RESULTS: There were 25 children with LUTD. The mean follow-up for LUTD (+) and LUTD (-) groups were 63 (22-155) and 101 months (14-124), and graft survival were 76% for LUTD (+) and 80% for LUTD (-), respectively (P = .711). On the other hand, creatinine levels at last follow-up were significantly higher in the LUTD (+) group (1.3 ± 0.3 mg/dL vs 0.96 ± 0.57 mg/dL, P < .001). Infectious complications and postoperative urinary tract infection incidences were also higher in the LUTD (+) group (68% vs 25.7%, P = .002 and 60% vs 11.4%, P < .01). CONCLUSION: UTI is significantly higher after kidney transplantation in patients with LUTD. Despite the higher risk of UTI, renal transplantation can be performed safely in those patients with careful patient selection, preoperative management, and close postoperative follow-up. Restoration of good bladder function is the key factor in the success of kidney transplantation in those patients.


Asunto(s)
Fallo Renal Crónico/cirugía , Trasplante de Riñón/efectos adversos , Infecciones Urinarias/epidemiología , Adolescente , Niño , Femenino , Estudios de Seguimiento , Supervivencia de Injerto , Humanos , Masculino , Complicaciones Posoperatorias/epidemiología , Complicaciones Posoperatorias/etiología , Estudios Retrospectivos , Factores de Tiempo , Turquía/epidemiología , Infecciones Urinarias/etiología
10.
Urology ; 48(6): 944-6, 1996 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-8973685

RESUMEN

Among 190 patients with metastatic testicular cancer who were treated by platinum-based combination chemotherapy and achieved complete remission, 4 (2.1%) developed gynecomastia 2 to 5 months after the cessation of chemotherapy. All of these patients had normal serum levels of the beta subunit of human chorionic gonadotropin and testosterone levels at the lower range of normal, but they had elevated levels of follicle-stimulating hormone, luteinizing hormone, and estradiol. The cause of gynecomastia in our patients was probably these increased levels of gonadotropins that, in turn, stimulated increased secretion of testicular estrogen, thus altering the normal estradiol-testosterone ratio. Treatment-related gynecomastia, which may occur several months after the cessation of cytotoxic chemotherapy, does not necessarily mean the return of disease. It is important to recognize this fact so as to prevent unnecessary investigations that will cause psychological distress in a young patient with testicular cancer.


Asunto(s)
Antineoplásicos/efectos adversos , Germinoma/tratamiento farmacológico , Ginecomastia/inducido químicamente , Neoplasias Testiculares/tratamiento farmacológico , Adolescente , Adulto , Humanos , Masculino
11.
Am J Clin Oncol ; 24(6): 610-3, 2001 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-11801765

RESUMEN

The authors evaluated the prostate cancer detection rate in Turkish patients with prostate-specific antigen (PSA) levels of 4 ng/ml to 10 ng/ml and who had normal digital rectal examination (DRE) findings. They also aimed to evaluate the value of PSA density and percent free PSA in minimizing unnecessary prostate biopsies for these PSA ranges. This prospective study included 134 consecutive men referred for early prostate cancer detection or lower urinary tract symptoms. All men underwent transrectal ultrasound with systematic sextant needle biopsies. The ability of PSA density and percent free PSA to improve the power of PSA in the detection of prostate cancer was evaluated with statistical analyses as well as receiver operating characteristics curves. Among the 134 men, 124 (92.5%) had a benign histology and 10 (7.5%) had cancer diagnosed on the initial biopsies. Despite the disappointing results in regard to the sensitivity and specificity of PSA derivatives alone, the combination of PSA density and percent free PSA significantly increased the area under the curve compared with the use of each test alone. To increase the specificity of PSA in this patient population, the authors recommend combining two PSA derivatives in deciding whether to perform a biopsy. In a PSA range of 4 ng/ml to 10 ng/ml and with normal DRE, a percent free PSA < 21% and a PSA density > 0.18 yields highest specificity with 90% sensitivity.


Asunto(s)
Adenocarcinoma/diagnóstico , Antígeno Prostático Específico/sangre , Neoplasias de la Próstata/diagnóstico , Adenocarcinoma/sangre , Adenocarcinoma/patología , Adulto , Anciano , Biopsia con Aguja , Humanos , Masculino , Persona de Mediana Edad , Estudios Prospectivos , Neoplasias de la Próstata/sangre , Neoplasias de la Próstata/patología , Curva ROC , Valores de Referencia , Sensibilidad y Especificidad
12.
J Endourol ; 13(10): 751-4, 1999 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-10646683

RESUMEN

PURPOSE: To define the relation of nonoliguric renal failure to transurethral resection of the prostate (TURP), its clinical importance, and predictive factors. PATIENTS AND METHODS: The files of 439 patients who had undergone TURP at Hacettepe University School of Medicine, Department of Urology, between January 1991 and 1994 were analyzed. The patients were divided into three groups according to postoperative serum creatinine concentration and the presence of clinical signs and symptoms of TUR syndrome (Group I: patients with preoperative and postoperative creatinine in the normal range; Group II: patients suffering nonoliguric renal failure; and Group III: patients with TUR syndrome). The data of the groups were compared in terms of factors influencing nonoliguric renal failure. RESULTS: The mean postoperative concentrations of sodium, blood urea nitrogen, creatinine, and albumin in Groups II and III were statistically different from those in Group I (P < 0.001). There was a moderate relation between hyponatremia and the occurrence of nonoliguric renal failure (r(s) = -0.56). Capsule perforation increased the risk of nonoliguric renal failure 10.6 fold. All of the patients were managed by a conservative approach, and none of the patients died or progressed to end-stage renal disease. They were all discharged with a mean hospitalization period of 7 days and normal renal function tests. CONCLUSION: Nonoliguric renal failure was thought to be an early step in the pathophysiology of TUR syndrome with acute renal failure. It is an asymptomatic clinical picture that is undiagnosed unless laboratory examinations are performed. A conservative therapeutic approach is enough.


Asunto(s)
Lesión Renal Aguda/etiología , Lesión Renal Aguda/fisiopatología , Resección Transuretral de la Próstata/efectos adversos , Urodinámica , Lesión Renal Aguda/sangre , Lesión Renal Aguda/complicaciones , Lesión Renal Aguda/terapia , Anciano , Anciano de 80 o más Años , Creatinina/sangre , Humanos , Riñón/lesiones , Tiempo de Internación , Masculino , Manitol/uso terapéutico , Persona de Mediana Edad , Oliguria/etiología , Soluciones , Irrigación Terapéutica , Heridas Penetrantes/etiología , Heridas Penetrantes/fisiopatología
13.
Int Urol Nephrol ; 33(2): 357-62, 2001.
Artículo en Inglés | MEDLINE | ID: mdl-12092656

RESUMEN

Of the 100 patients with muscle-confined transitional cell cancer of the bladder and ASA score < or = 3, 59 underwent radical cystectomy (RC) and 41 received non-cystectomy alternative treatments (AT). Median follow-up was 30.8 and 30.5 months in RC and in AT groups, respectively. Disease-free and overall survivals were significantly longer in RC group than AT group. Salvage cystectomy was required in approximately 25% of the patients who received AT. AT was associated with higher rate of cancer-related morbidity and cancer progression than RC. Every patient with invasive bladder cancer should be given a chance for cystectomy.


Asunto(s)
Carcinoma de Células Transicionales/cirugía , Carcinoma de Células Transicionales/terapia , Cistectomía , Neoplasias de la Vejiga Urinaria/cirugía , Neoplasias de la Vejiga Urinaria/terapia , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico , Carcinoma de Células Transicionales/mortalidad , Femenino , Estudios de Seguimiento , Humanos , Masculino , Persona de Mediana Edad , Dosificación Radioterapéutica , Estudios Retrospectivos , Análisis de Supervivencia , Factores de Tiempo , Neoplasias de la Vejiga Urinaria/mortalidad
14.
Int Urol Nephrol ; 31(3): 295-9, 1999.
Artículo en Inglés | MEDLINE | ID: mdl-10672947

RESUMEN

OBJECTIVE: To find the incidence of multicentric renal cell carcinoma and its possible relationship to the other clinical and pathologic findings. METHODS: A total of 40 patients with renal cell carcinoma underwent radical nephrectomy between March 1994 and January 1996 at Hacettepe University, School of Medicine, Department of Urology. All of the materials were examined grossly and histologically by the same pathologist. RESULTS: Among 40 kidneys 4 had satellite carcinoma (10%), 3 of them had been shown by preoperative imaging techniques, 1 was found histopathologically. CONCLUSION: If preoperative imaging techniques do not show additional lesion in the kidney besides the small early stage primary in incidentally discovered patients, the incidence of satellite renal cell carcinoma is low enough to justify nephron sparing surgery.


Asunto(s)
Carcinoma de Células Renales/patología , Neoplasias Renales/patología , Adulto , Anciano , Anciano de 80 o más Años , Carcinoma de Células Renales/cirugía , Femenino , Humanos , Neoplasias Renales/cirugía , Masculino , Persona de Mediana Edad , Nefrectomía
15.
Transplant Proc ; 45(1): 77-81, 2013.
Artículo en Inglés | MEDLINE | ID: mdl-23375277

RESUMEN

BACKGROUND: The proposed mechanism by which nephron underdosing contributes to graft failure is hyperfiltration damage leading to proteinuria and nephron loss. We evaluated whether proteinuria had an impact on the relationship between graft size and outcome in living donor kidney transplantation. METHODS: We analyzed 69 living donors and their recipients who underwent transplantation between 2003 and 2007. Transplanted kidney volumes were measured by 3-D helical computed tomography scanning. A transplant kidney volume-recipient body weight (Vol/Wt) ratio was calculated for each donor-recipient pair. The subjects were divided into tertiles according to Vol/Wt ratios: low (<2.0), medium (2.0-2.7) and high (>2.7). RESULTS: Recipient glomerular filtration rate (GFR) positively correlated with Vol/Wt ratio at 6, 12, and 24 months posttransplantation (r = .49, P < .001; r = .47, P < .001; r = .42, P < .001, respectively). Mean GFR increased significantly in graded fashion from low to high Vol/Wt ratio groups at 6, 12, and 24 months posttransplantation. Proteinuria did not differ between the three groups during 24 months after transplantation. Upon multivariate analysis, donor age, recipient age, and Vol/Wt ratio showed significant impacts on graft function. CONCLUSION: Vol/Wt ratio displayed a significant independent effect on graft function in living donor kidney transplantation. This close association did not appear to be related to the degree of proteinuria during 24 months.


Asunto(s)
Supervivencia de Injerto , Trasplante de Riñón/métodos , Riñón/fisiopatología , Donadores Vivos , Proteinuria/patología , Adulto , Peso Corporal , Femenino , Tasa de Filtración Glomerular , Humanos , Imagenología Tridimensional , Riñón/anatomía & histología , Fallo Renal Crónico/cirugía , Fallo Renal Crónico/orina , Masculino , Persona de Mediana Edad , Tamaño de los Órganos , Análisis de Regresión , Factores de Tiempo , Tomografía Computarizada por Rayos X , Adulto Joven
16.
Transplant Proc ; 43(3): 847-9, 2011 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-21486612

RESUMEN

BACKGROUND: Nephronophthisis (NPHP) is the most common genetic cause of end-stage renal disease (ESRD) in the first 3 decades of life. Treatment of patients with NPHP is symptomatic; kidney transplantation is the treatment of choice when ESRD is established. We report herein our center's experience with kidney transplantation for children with juvenile NPHP. PATIENTS: We retrospectively analyzed medical records of 9 renal transplant recipients with a primary diagnosis of juvenile NPHP confirmed by genetic analysis and/or renal biopsy findings in a single center from 1996 to 2010. RESULTS: Of the 9 patients, 6 received a living related and 3 a cadaveric donor transplantation. Preemptive renal transplantation was performed in 7 patients. The median age of the patients was 13.38 ± 4.6 years; the median follow-up period was 17 months. Posttransplantation immusuppression comprised corticosteroids, a calcineurin inhibitor, and mycophenolate mofetil or azathioprine. One patient lost his renal graft owing to renal graft thrombosis, and grade II chronic allograft nephropathy was diagnosed by renal biopsy on the 62th day after renal transplantation in another patient. The median glomerular filtration rates after transplantation at 1, 3, and 5 years were 85, 75.2, and 83.2 mL/min/1.73 m(2), respectively. CONCLUSION: We observed preserved graft functions for long periods among renal transplant recipients with juvenile NPHP. Chronic allograft nephropathy developed rarely on long follow-up.


Asunto(s)
Enfermedades Renales Quísticas , Trasplante de Riñón , Adolescente , Niño , Femenino , Estudios de Seguimiento , Humanos , Enfermedades Renales Quísticas/congénito , Enfermedades Renales Quísticas/cirugía , Masculino
18.
Int J Urol ; 7(6): 206-9, 2000 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-10843451

RESUMEN

BACKGROUND: Bacillus Calmette-Guérin (BCG) and epirubicin have both been shown to be effective in the treatment of superficial bladder cancer. We studied whether the alternating combination of these agents could improve the efficacy with tolerable side-effects in the treatment of high-risk superficial bladder tumors. METHODS: Forty-one patients with high-risk superficial bladder transitional carcinoma were included in this study. Twenty-one patients were randomized into the BCG group and 20 patients were treated with sequential BCG and epirubicin. The patients were followed for 9-24 months (mean 18 months). Recurrence rates, median time to the first recurrence, progression rate and complications were compared. RESULTS: Fifteen percent of the patients in the BCG and epirubicin group and 19% of the patients in the BCG alone group developed tumor recurrence. Tumor progression was observed in 4.7% and 10% in the BCG/epirubicin group and the BCG alone group, respectively. Median time to first recurrence was 11 months for the BCG/epirubicin group and 16 months for the BCG group (P > 0.05). Three patients in the BCG/epirubicin treatment group developed serious side-effects, which necessitated antituberculosis treatment. CONCLUSION: Because the efficacy of combination was no better than the standard treatment and the alternating combination seemed to be related to a higher incidence of side-effects, this study albeit small, does not recommend combination therapy of BCG and epirubicin in high risk patients with superficial bladder cancer.


Asunto(s)
Antibióticos Antineoplásicos/administración & dosificación , Carcinoma de Células Transicionales/tratamiento farmacológico , Epirrubicina/administración & dosificación , Mycobacterium bovis , Neoplasias de la Vejiga Urinaria/tratamiento farmacológico , Terapia Combinada , Femenino , Estudios de Seguimiento , Humanos , Inmunoterapia , Masculino , Persona de Mediana Edad , Recurrencia Local de Neoplasia , Resultado del Tratamiento
19.
BJU Int ; 85(7): 864-8, 2000 May.
Artículo en Inglés | MEDLINE | ID: mdl-10792167

RESUMEN

OBJECTIVE: To describe the incidence, clinical characteristics, treatment methods and long-term follow-up of bilateral germ cell tumours of the testis (GCTT) in patients treated at one institution. PATIENTS AND METHODS: Of 552 patients with GCTT, 11 (2%, mean age 26. 9 years) developed bilateral disease; all 11 underwent radical orchidectomy. Additional treatment was planned according to the histological type and clinical stage of the tumour, and previous treatments. Intramuscular testosterone was administered periodically after total castration. The data on survival, sexual status and treatment complications were reviewed. RESULTS: Of the 11 patients, seven developed a second tumour metachronously (median interval 87 months) and four had synchronous bilateral GCTT. Cryptorchidism, infertility or atrophic testis was associated with the development of bilateral GCTT in seven of the 11 patients. All synchronous tumours and most of the sequential tumours had identical histology on both sides. Although all sequential tumours presented at an early clinical stage, three of four synchronous bilateral GCTTs presented at an advanced stage. Five patients received platinum-based chemotherapy; three patients underwent post- chemotherapy resection of the retroperitoneal residual mass. Sexual libido and potency were conserved in all patients. No significant morbidity was recorded as being caused by any of these treatments. At a median follow-up of 11. 6 years, all patients were alive with no evidence of cancer. CONCLUSIONS: All patients with unilateral GCTT have an increased risk of developing a contralateral testicular tumour, even decades after diagnosis. Management should be adapted to each patient. As all patients in this series survived in the long-term, developing a second germ cell cancer does not necessarily predict a poor prognosis.


Asunto(s)
Germinoma/cirugía , Neoplasias Primarias Secundarias/cirugía , Neoplasias Testiculares/cirugía , Adolescente , Adulto , Estudios de Seguimiento , Germinoma/patología , Humanos , Masculino , Neoplasias Primarias Secundarias/patología , Orquiectomía/métodos , Pronóstico , Factores de Riesgo , Neoplasias Testiculares/patología
20.
Urology ; 56(3): 459-62, 2000 Sep 01.
Artículo en Inglés | MEDLINE | ID: mdl-10962315

RESUMEN

OBJECTIVES: To determine the risk of local recurrence and relapse in patients with Stage I nonseminomatous testicular cancer with scrotal violation. METHODS: From 1983 to 1998, 75 patients with clinical Stage I nonseminomatous testicular cancer who were initially treated with orchiectomy and surveillance alone were retrospectively reviewed. RESULTS: Of 75 patients with Stage I nonseminomatous testicular cancer, 13 had scrotal violation. The surgical margins and the spermatic cords were free of tumor in all patients. Five patients (38%) in the scrotal violation group and 17 patients (27%) in the inguinal orchiectomy group experienced relapses. The difference was not significant (P = 0.41). Local recurrence was not observed in either group. All relapses, except one in the standard inguinal orchiectomy group, were treated successfully with chemotherapy and postchemotherapy surgery, if needed. The progression rate and survival were not significantly different between the two groups. CONCLUSIONS: Scrotal violation without positive surgical margins and tumor spillage does not adversely affect relapse rate and survival. Therefore, scrotal violation per se is not an exclusion criterion for the surveillance-only policy in patients with Stage I nonseminomatous testicular germ cell cancer.


Asunto(s)
Neoplasias de Células Germinales y Embrionarias/cirugía , Escroto/cirugía , Neoplasias Testiculares/cirugía , Adolescente , Adulto , Anciano , Estudios de Seguimiento , Humanos , Conducto Inguinal/cirugía , Masculino , Persona de Mediana Edad , Recurrencia Local de Neoplasia/etiología , Neoplasias de Células Germinales y Embrionarias/mortalidad , Neoplasias de Células Germinales y Embrionarias/patología , Orquiectomía/efectos adversos , Orquiectomía/métodos , Orquiectomía/mortalidad , Estudios Retrospectivos , Factores de Riesgo , Tasa de Supervivencia , Neoplasias Testiculares/mortalidad , Neoplasias Testiculares/patología
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