Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 132
Filtrar
Mais filtros

Base de dados
País/Região como assunto
Tipo de documento
Intervalo de ano de publicação
1.
World J Urol ; 38(2): 343-350, 2020 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-31062122

RESUMO

OBJECTIVES: To evaluate the effect of intensified treatment parameters on safety, functional outcomes, and PSA after MR-Guided Transurethral Ultrasound Ablation (TULSA) of prostatic tissue. PATIENTS AND METHODS: Baseline and 6-month follow-up data were collected for a single-center cohort of the multicenter Phase I (n = 14/30 at 3 sites) and Pivotal (n = 15/115 at 13 sites) trials of TULSA in men with localized prostate cancer. The Pivotal study used intensified treatment parameters (increased temperature and spatial extent of ablation coverage). The reporting site recruited the most patients to both trials, minimizing the influence of physician experience on this comparison of adverse events, urinary symptoms, continence, and erectile function between subgroups of both studies. RESULTS: For Phase I and TACT patients, median age was 71.0 and 67.0 years, prostate volume 41.0 and 44.5 ml, and PSA 6.7 and 6.7 ng/ml, respectively. All 14 Phase I patients had low-risk prostate cancer, whereas 7 of 15 TACT patients had intermediate-risk disease. Baseline IIEF, IPSS, quality of life, and pad use were similar between groups. Pad use at 1 month and quality of life at 3 months favored Phase I patients. At 6 months, there were no significant differences in functional outcomes or adverse events. CONCLUSION: TULSA demonstrated acceptable clinical safety in Phase I trial. Intensified treatment parameters in the TACT Pivotal trial increased ablation coverage from 90 to 98% of the prostate without affecting 6-month adverse events or functional outcomes. Long-term follow-up and 12-month biopsies are needed to evaluate oncological safety.


Assuntos
Próstata/diagnóstico por imagem , Próstata/cirurgia , Neoplasias da Próstata/diagnóstico por imagem , Neoplasias da Próstata/cirurgia , Ressecção Transuretral da Próstata/métodos , Idoso , Ensaios Clínicos Fase I como Assunto , Endossonografia , Estudos de Viabilidade , Humanos , Imageamento por Ressonância Magnética , Masculino , Pessoa de Meia-Idade , Estudos Multicêntricos como Assunto , Cirurgia Assistida por Computador , Resultado do Tratamento , Ultrassonografia de Intervenção
2.
Eur Radiol ; 29(1): 299-308, 2019 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-29943185

RESUMO

PURPOSE: To quantitatively assess 12-month prostate volume (PV) reduction based on T2-weighted MRI and immediate post-treatment contrast-enhanced MRI non-perfused volume (NPV), and to compare measurements with predictions of acute and delayed ablation volumes based on MR-thermometry (MR-t), in a central radiology review of the Phase I clinical trial of MRI-guided transurethral ultrasound ablation (TULSA) in patients with localized prostate cancer. MATERIALS AND METHODS: Treatment day MRI and 12-month follow-up MRI and biopsy were available for central radiology review in 29 of 30 patients from the published institutional review board-approved, prospective, multi-centre, single-arm Phase I clinical trial of TULSA. Viable PV at 12 months was measured as the remaining PV on T2-weighted MRI, less 12-month NPV, scaled by the fraction of fibrosis in 12-month biopsy cores. Reduction of viable PV was compared to predictions based on the fraction of the prostate covered by the MR-t derived acute thermal ablation volume (ATAV, 55°C isotherm), delayed thermal ablation volume (DTAV, 240 cumulative equivalent minutes at 43°C thermal dose isocontour) and treatment-day NPV. We also report linear and volumetric comparisons between metrics. RESULTS: After TULSA, the median 12-month reduction in viable PV was 88%. DTAV predicted a reduction of 90%. Treatment day NPV predicted only 53% volume reduction, and underestimated ATAV and DTAV by 36% and 51%. CONCLUSION: Quantitative volumetry of the TULSA phase I MR and biopsy data identifies DTAV (240 CEM43 thermal dose boundary) as a useful predictor of viable prostate tissue reduction at 12 months. Immediate post-treatment NPV underestimates tissue ablation. KEY POINTS: • MRI-guided transurethral ultrasound ablation (TULSA) achieved an 88% reduction of viable prostate tissue volume at 12 months, in excellent agreement with expectation from thermal dose calculations. • Non-perfused volume on immediate post-treatment contrast-enhanced MRI represents only 64% of the acute thermal ablation volume (ATAV), and reports only 60% (53% instead of 88% achieved) of the reduction in viable prostate tissue volume at 12 months. • MR-thermometry-based predictions of 12-month prostate volume reduction based on 240 cumulative equivalent minute thermal dose volume are in excellent agreement with reduction in viable prostate tissue volume measured on pre- and 12-month post-treatment T2w-MRI.


Assuntos
Ablação por Ultrassom Focalizado de Alta Intensidade/métodos , Imageamento por Ressonância Magnética/métodos , Neoplasias da Próstata/patologia , Ressecção Transuretral da Próstata/métodos , Idoso , Biópsia com Agulha de Grande Calibre , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Tamanho do Órgão , Estudos Prospectivos , Neoplasias da Próstata/cirurgia , Fatores de Tempo , Resultado do Tratamento
3.
Eur J Nucl Med Mol Imaging ; 45(6): 904-912, 2018 06.
Artigo em Inglês | MEDLINE | ID: mdl-29362859

RESUMO

PURPOSE: The aims of this retrospective analysis were to compare 68Ga-PSMA PET findings and low-dose CT findings (120 kV, 30 mA), and to obtain semiquantitative and quantitative 68Ga-PSMA PET data in patients with prostate cancer (PC) bone metastases. METHODS: In total, 152 PET/CT scans from 140 patients were evaluated. Of these patients, 30 had previously untreated primary PC, and 110 had biochemical relapse after treatment of primary PC. All patients underwent dynamic PET/CT scanning of the pelvis and lower abdomen as well as whole-body PET/CT with 68Ga-PSMA-11. The PET/CT scans were analysed qualitatively (visually), semiquantitatively (SUV), and quantitatively based on a two-tissue compartment model and a noncompartmental approach leading to the extraction of the fractal dimension. Differences were considered significant for p values <0.05. RESULTS: In total, 168 68Ga-PSMA-positive and 113 CT-positive skeletal lesions were detected in 37 patients (8 with primary PC, 29 with biochemical recurrence). Of these 168 lesions, 103 were both 68Ga-PSMA PET-positive and CT-positive, 65 were only 68Ga-PSMA-positive, and 10 were only CT-positive. The Yang test showed that there were significantly more 68Ga-PSMA PET-positive lesions than CT-positive lesions. Association analysis showed that PSA plasma levels were significantly correlated with several 68Ga-PSMA-11-associated parameters in bone metastases, including the degree of tracer uptake (SUVaverage and SUVmax), its transport rate from plasma to the interstitial/intracellular compartment (K1), its rate of binding to the PSMA receptor and its internalization (k3), its influx rate (Ki), and its distribution heterogeneity. CONCLUSION: 68Ga-PSMA PET/CT is a useful diagnostic tool in the detection of bone metastases in PC. 68Ga-PSMA PET visualizes more bone metastases than low-dose CT. PSA plasma levels are significantly correlated with several 68Ga-PSMA PET parameters.


Assuntos
Neoplasias Ósseas/secundário , Tomografia por Emissão de Pósitrons combinada à Tomografia Computadorizada , Neoplasias da Próstata/patologia , Adulto , Idoso , Idoso de 80 Anos ou mais , Neoplasias Ósseas/diagnóstico por imagem , Humanos , Masculino , Pessoa de Meia-Idade , Gradação de Tumores , Estudos Retrospectivos
4.
Langenbecks Arch Surg ; 403(2): 265-269, 2018 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-29098385

RESUMO

PURPOSE: The purpose of this study is to investigate the safety and patients' benefit of incidental appendectomy during robot-assisted laparoscopic radical prostatectomy (RALRP). METHODS: Fifty-three patients, who had incidental appendectomy during RALRP between January 2012 and March 2014, were enrolled to this study. To evaluate the safety of the procedure, following parameters were evaluated: patient age, duration of surgery, perioperative complications (classified by Clavien-Dindo), time to bowel movement, and length of hospital stay. Furthermore, intraoperative visual appearance, location, and histopathological evaluation of the appendix were evaluated. Data was analyzed by descriptive statistics. RESULTS: Mean age of patients was 61 years, the average hospital stay 5 days. No perioperative complications occurred. The appendix was unsuspicious in 39 patients (73.6%); 14 patients (26.4%) had macroscopically signs of inflammation. Of the 53 resected appendixes, the histopathological evaluation showed 33 (62.2%) inconspicuous appendices, 11 (20.8%) post-inflammatory changes, 4 (7.5%) with chronical signs of inflammation and 3 (5.7%) with signs of acute inflammation. In 2 patients (3.8%), low-grade mucinous neoplasms were found in the specimens. CONCLUSIONS: Incidental appendectomy during RALRP is a feasible procedure. With regard to inflammation and neoplastic changes, incidental appendectomy can be considered for patients scheduled for robot-assisted prostate surgery.


Assuntos
Apendicectomia/métodos , Prostatectomia/métodos , Neoplasias da Próstata/cirurgia , Procedimentos Cirúrgicos Robóticos/métodos , Idoso , Estudos de Coortes , Seguimentos , Alemanha , Humanos , Achados Incidentais , Masculino , Pessoa de Meia-Idade , Duração da Cirurgia , Neoplasias da Próstata/patologia , Estudos Retrospectivos , Medição de Risco , Resultado do Tratamento
5.
World J Urol ; 35(12): 1841-1847, 2017 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-28861691

RESUMO

PURPOSE: To investigate the influence of different postoperative radiotherapy (RT) regimes on post-prostatectomy continence and QoL. METHODS: Men after prostatectomy (RP) and RT were assigned in adjuvant (ART), early salvage (ESRT) and salvage radiotherapy (SRT) groups depending on time of initiation, indication and pre-RT-PSA (≤/>0.5 ng/ml). Continence and QoL outcomes were evaluated by validated questionnaire. Statistical analysis included students t test, Chi square, Fisher's test, ROC- and McNemar-Bowker-Analyses. RESULTS: The mean follow-up was 5.1 years. 33.5, 38.2 and 28.3% received ART, ESRT and SRT, respectively. Mean time to RT was 0.3 (±0.4), 1.8 (±2.5) and 3.3 (±3.6) years respectively. Differences in age at RP (p = 0.54) and RT (p = 0.47) between groups were not significant. Mean-RT-dose was similar (p = 0.70). Differences in continence distribution between groups before (p = 0.56) and after RT (p = 0.38) were not significant. No significant differences were observed for frequency (p = 0.58) or amount (p = 0.88) of urine loss, impact on QoL (p = 0.13) and ICIQ-SF scores (p = 0.69) between groups. Even though no significant difference in post-RT-continence (p = 0.89) was observed in the direct comparison between groups, a significant worsening of long-term continence was observed in all groups (p < 0.001). We found no cutoff and no time-point after RP at which this negative effect of RT on continence became insignificant (AUC = 0.474). A subgroup with apparent local recurrence showed no differences for ICIQ-SF-score (p = 0.155), QoL (0.077), incontinence grade (p = 0.387), frequency (p = 0.182) and amount (p = 0.415) of urine loss. Proportionally more men in this subgroup remembered deterioration of continence after RT (p = 0.029). CONCLUSION: Postoperative RT adversely affects long-term continence; this negative effect is irrespective of time of initiation or indication for RT. These results suggest a need for innovative strategies of prostate cancer therapy with lasting oncological, functional and QoL outcomes.


Assuntos
Efeitos Adversos de Longa Duração , Prostatectomia/métodos , Neoplasias da Próstata/cirurgia , Qualidade de Vida , Radioterapia Adjuvante , Incontinência Urinária , Idoso , Seguimentos , Alemanha/epidemiologia , Humanos , Efeitos Adversos de Longa Duração/diagnóstico , Efeitos Adversos de Longa Duração/etiologia , Efeitos Adversos de Longa Duração/psicologia , Masculino , Pessoa de Meia-Idade , Dosagem Radioterapêutica , Radioterapia Adjuvante/efeitos adversos , Radioterapia Adjuvante/métodos , Terapia de Salvação/efeitos adversos , Terapia de Salvação/métodos , Inquéritos e Questionários , Incontinência Urinária/diagnóstico , Incontinência Urinária/etiologia , Incontinência Urinária/psicologia
6.
BMC Urol ; 17(1): 5, 2017 Jan 11.
Artigo em Inglês | MEDLINE | ID: mdl-28077116

RESUMO

BACKGROUND: To evaluate quality of life, functional and oncological outcome after infravesical desobstruction and HIFU treatment for localized prostate cancer. METHODS: One hundred thirty-one patients, treated with TURP and HIFU in a single institution were followed up for oncological and functional outcome. Oncological outcome was quantified by biochemical recurrence free survival using the Stuttgart and Phoenix criteria. Quality of life was assessed by usage of standardized QLQ-C30 and QLQ-PR25 questionnaires. In addition, functional questionnaires such as IPSS and IIEF-5 were used. Complications were assessed by the Clavien-Dindo classification. RESULTS: One hundred thirty-one patients with a mean age of 72.8 years (SD: 6.0) underwent HIFU for prostate cancer (29.0% low risk, 58.8% intermediate risk, 12.2% high risk). PSA nadir was 0.6 ng/ml (SD: 1.2) after a mean of 4.6 months (SD: 5.7). Biochemical recurrence free survival defined by Stuttgart criteria was 73.7%, 84.4% and 62.5% for low-, intermediate- and high-risk patients after 22.2 months. Complications were grouped according to Clavien-Dindo and occurred in 10.7% (grade II) and 11.5% (grade IIIa) of cases. 35.1% of patients needed further treatment for bladder neck stricture. Regarding incontinence, 14.3%, 2.9% and 0% of patients had de novo urinary incontinence grade I°, II° and III° and 3.8% urge incontinence due to HIFU treatment. Patients were asked for the ability to have intercourse: 15.8%, 58.6% and 66.7% of patients after non-, onesided and bothsided nervesparing procedure were able to obtain sufficient erection for intercourse, respectively. Regarding quality of life, mean global health score according to QLQ-C30 was 69.4%. CONCLUSION: HIFU treatment for localized prostate cancer shows acceptable oncological safety. Quality of life after HIFU is better than in the general population and ranges within those of standard treatment options compared to literature. HIFU seems a safe valuable treatment alternative for patients not suitable for standard treatment.


Assuntos
Neoplasias da Próstata/cirurgia , Qualidade de Vida , Ressecção Transuretral da Próstata , Ultrassom Focalizado Transretal de Alta Intensidade , Obstrução do Colo da Bexiga Urinária/cirurgia , Idoso , Humanos , Masculino , Estudos Prospectivos , Neoplasias da Próstata/complicações , Recuperação de Função Fisiológica , Resultado do Tratamento , Obstrução do Colo da Bexiga Urinária/etiologia
7.
World J Urol ; 34(1): 113-20, 2016 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-25991601

RESUMO

PURPOSE: To identify predictive factors for immediate continence after radical prostatectomy. PATIENTS AND METHODS: A total of 1553 patients underwent radical prostatectomy in a single institution (670 RRP, 883 RARP), had complete perioperative data and follow-up for urinary continence and were included in this prospective analysis. Immediate continence was defined as no pad usage after catheter removal. Evaluated parameters included age, body mass index, ECOG performance status, erectile function, prostate volume, PSA, Gleason score, tumor stage and D'Amico risk groups, as well as surgical approach (RRP, RARP), surgeon volume, nerve-sparing, lymphadenectomy, blood transfusions and duration of catheterization. RESULTS: A total of 240 men (15.5 %) did not require any pads 1 day or later after removal of the transurethral catheter. Correlation of parameters with immediate continence revealed significance for age (p < 0.001), ECOG-score (p = 0.025), erectile function (p = 0.001), nerve-sparing (p = 0.022), Gleason score (p = 0.002) and surgeon volume (p ≤ 0.022). Multivariate analyses identified IIEF-score >21 (p = 0.031), ECOG (p < 0.05), bilateral nerve-sparing (p = 0.049), Gleason score <3 + 4 (p ≤ 0.028), less blood transfusion (p ≤ 0.044) and surgeon volume (p ≤ 0.042) as the remaining prognostic parameters for immediate continence after radical prostatectomy. The type of surgical approach (robotic vs. open radical prostatectomy) did not yield significant influence. CONCLUSION: Evaluating continence in a contemporary prospective cohort revealed 15.5 % of patients never requiring a pad postoperatively. Predictive parameters for immediate continence were erectile function, ECOG, bilateral nerve-sparing, less blood transfusion and Gleason score. Furthermore, the surgeon's experience but not his operative technique had a significant impact on immediate postoperative continence.


Assuntos
Excisão de Linfonodo/métodos , Complicações Pós-Operatórias/epidemiologia , Prostatectomia , Neoplasias da Próstata/cirurgia , Recuperação de Função Fisiológica , Incontinência Urinária/epidemiologia , Adulto , Idoso , Idoso de 80 Anos ou mais , Transfusão de Sangue/estatística & dados numéricos , Estudos de Coortes , Técnicas de Apoio para a Decisão , Disfunção Erétil/epidemiologia , Humanos , Masculino , Pessoa de Meia-Idade , Gradação de Tumores , Estadiamento de Neoplasias , Pelve , Estudos Prospectivos , Procedimentos Cirúrgicos Robóticos , Fatores de Tempo , Cateterismo Urinário/estatística & dados numéricos
8.
World J Urol ; 34(10): 1373-82, 2016 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-26892160

RESUMO

PURPOSE: To reach standardized terminology in focal therapy (FT) for prostate cancer (PCa). METHODS: A four-stage modified Delphi consensus project was undertaken among a panel of international experts in the field of FT for PCa. Data on terminology in FT was collected from the panel by three rounds of online questionnaires. During a face-to-face meeting on June 21, 2015, attended by 38 experts, all data from the online rounds were reviewed and recommendations for definitions were formulated. RESULTS: Consensus was attained on 23 of 27 topics; Targeted FT was defined as a lesion-based treatment strategy, treating all identified significant cancer foci; FT was generically defined as an anatomy-based (zonal) treatment strategy. Treatment failure due to the ablative energy inadequately destroying treated tissue is defined as ablation failure. In targeting failure the energy is not adequately applied to the tumor spatially and selection failure occurs when a patient was wrongfully selected for FT. No definition of biochemical recurrence can be recommended based on the current data. Important definitions for outcome measures are potency (minimum IIEF-5 score of 21), incontinence (new need for pads or leakage) and deterioration in urinary function (increase in IPSS >5 points). No agreement on the best quality of life tool was established, but UCLA-EPIC and EORTC-QLQ-30 were most commonly supported by the experts. A complete overview of statements is presented in the text. CONCLUSION: Focal therapy is an emerging field of PCa therapeutics. Standardization of definitions helps to create comparable research results and facilitate clear communication in clinical practice.


Assuntos
Consenso , Técnica Delphi , Neoplasias da Próstata/terapia , Qualidade de Vida , Terapia Combinada/normas , Humanos , Masculino , Antígeno Prostático Específico/sangue , Neoplasias da Próstata/sangue , Inquéritos e Questionários
9.
World J Urol ; 32(2): 365-71, 2014 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-23736527

RESUMO

PURPOSE: Radical cystectomy (RC) and pelvic lymph node dissection (LND) are standard treatments for muscle-invasive urothelial carcinoma of the bladder. Lymph node staging is a prerequisite for clinical decision-making regarding adjuvant chemotherapy and follow-up regimens. Recently, the clinical and pathological nodal staging scores (cNSS and pNSS) were developed. Prior to RC, cNSS determines the minimum number of lymph nodes required to be dissected; pNSS quantifies the accuracy of negative nodal staging based on pT stage and dissected LNs. cNSS and pNSS have not been externally validated, and their relevance for prediction of cancer-specific mortality (CSM) has not been assessed. METHODS: In this retrospective study of 2,483 RC patients from eight German centers, we externally validated cNSS and pNSS and determined their prediction of CSM. All patients underwent RC and LND. Median follow-up was 44 months. cNSS and pNSS sensitivities were evaluated using the original beta-binominal models. Adjusted proportional hazards models were calculated for pN0 patients to assess the predictive value of cNSS and pNSS for CSM. RESULTS: cNSS and pNSS both pass external validation. Adjusted for other clinical parameters, cNSS can predict outcome after RC. pNSS has no independent impact on prediction of CSM. The retrospective design is the major limitation of the study. CONCLUSIONS: In the present external validation, we confirm the validity of both cNSS and pNSS. cNSS is an independent predictor of CSM, thus rendering it useful as a tool for planning the extent of LND.


Assuntos
Carcinoma de Células de Transição/patologia , Excisão de Linfonodo/métodos , Linfonodos/patologia , Neoplasias da Bexiga Urinária/patologia , Adulto , Idoso , Idoso de 80 Anos ou mais , Carcinoma de Células de Transição/terapia , Quimioterapia Adjuvante , Estudos de Coortes , Cistectomia , Intervalo Livre de Doença , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Estadiamento de Neoplasias , Pelve , Modelos de Riscos Proporcionais , Estudos Retrospectivos , Resultado do Tratamento , Neoplasias da Bexiga Urinária/terapia
10.
Immunooncol Technol ; 23: 100727, 2024 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-39310847

RESUMO

Background: Spatial biology is an emerging concept to interrogate tumor heterogeneity. The NanoString GeoMx® Digital Spatial Profiling (DSP) platform has become increasingly available. It combines high-plex analysis of protein or messenger RNA expression using barcoded antibodies or oligonucleotide probes with investigator-driven selection of regions of interest. Cell populations, e.g. immune cells, can be selectively analyzed via segmentation. A key advantage is the use of archived formalin-fixed, paraffin-embedded tissue, however, begging the question whether and to what extent tissue fixation and storage time affect the results. Materials and methods: Antibody binding density (ABD), i.e. the number of barcodes/µm2, is a key quality control measure for DSP spatial proteomics. To assess whether regional differences in tissue fixation have an influence on ABD, we compared 652 regions of interest selected from tumor center and periphery of 49 prostate cancer and 25 renal cell carcinoma (RCC) specimens. Moreover, the effect of tissue storage time on ABD was examined. Finally, we tested whether regional differences have an influence on ABD of segmented CD45+ or CD8+ cells. Results: No significant differences in ABD between tumor center and periphery were found in prostate cancer or RCC. However, ABD was significantly higher in recent specimens (≤5 years) when compared with those that were older (>5 years; P = 0.027). There was a trend towards higher ABD in the tumor periphery of RCC specimens after segmentation for immune cells, albeit without reaching statistical significance. Conclusions: The NanoString GeoMx® DSP platform delivers robust data to interrogate tumor heterogeneity, but tissue storage time should be considered when interpreting the results.

11.
Br J Cancer ; 108(4): 973-82, 2013 Mar 05.
Artigo em Inglês | MEDLINE | ID: mdl-23299537

RESUMO

BACKGROUND: The B-cell translocation gene 2 (BTG2) is considered to act as a tumour-suppressor gene because of its antiproliferative and antimigratory activities. Higher levels of BTG2 expression in tumour cells have been linked to a better clinical outcome for several cancer entities. Here, we investigated the expression and function of BTG2 in bladder cancer. METHODS: The expression of BTG2 in bladder cancer cells was silenced by RNA interference. Cell motility was investigated by wound healing and Boyden chamber assays. The protein expression of BTG2 in bladder cancer was studied by immunohistochemistry. RESULTS: We observed that targeted suppression of BTG2 by RNA interference did not result in growth stimulation but led to a substantial inhibition of bladder cancer cell motility. Tissue microarray analyses of bladder cancer cystectomy specimens revealed that higher BTG2 expression levels within the tumours correlated strongly with a decreased cancer-specific survival for bladder cancer patients. CONCLUSION: These results indicate that endogenous BTG2 expression contributes to the migratory potential of bladder cancer cells. Moreover, high levels of BTG2 in bladder cancers are linked to decreased cancer-specific survival. These findings question the conception that BTG2 generally acts as a tumour suppressor and typically represents a favourable clinical marker for cancer patients.


Assuntos
Proteínas Imediatamente Precoces/genética , Proteínas Supressoras de Tumor/genética , Neoplasias da Bexiga Urinária/genética , Idoso , Linhagem Celular Tumoral , Movimento Celular/genética , Feminino , Genes Supressores de Tumor , Humanos , Proteínas Imediatamente Precoces/metabolismo , Pessoa de Meia-Idade , Interferência de RNA , Estudos Retrospectivos , Proteínas Supressoras de Tumor/metabolismo , Neoplasias da Bexiga Urinária/mortalidade
12.
Mol Imaging Biol ; 25(2): 375-383, 2023 04.
Artigo em Inglês | MEDLINE | ID: mdl-35999425

RESUMO

PURPOSE: Due to limited imaging options, the visualization of a local relapse of prostate cancer used to pose a considerable challenge. However, since the integration of 18F-PSMA-1007-PET/CT into the clinic, a relapsed tumor can now easily be detected by hybrid imaging. The present study aimed to evaluate and map the allocate relapse in a large cohort of prostate cancer patients focusing on individual patient management conclusions for radiation therapy. PROCEDURES: The current study included 135 men with prostate cancer after primary treatment who underwent 18F-PSMA-1007-PET/CT due to biochemical relapse detecting a local relapse. Imaging data were reassessed and analyzed with regard to relapse locations. For the correlation of tumor foci with clinical data, we used binary logistic regression models as well as the Kruskal-Wallis test and Mann-Whitney test. RESULTS: In total, 69.6% of all patients (mean age: 65 years) underwent prostatectomy while 30.4% underwent radiation therapy. PET imaging detected most frequently a unifocal relapse (72.6%). There was a statistically significantly higher rate of ipsilateral cases among the relapsed tumors. Comparing both treatment approaches, tumors relapsed most commonly within the posterior region after surgery and transition/peripheral zone after radiation therapy, respectively. CONCLUSIONS: The present study confirms that 18F-PSMA-1007-PET/CT is highly suitable for the localization and allocation of a local relapse in patients with prostate cancer. The data enable further optimizing dose prescriptions and target volume delineations of radiation therapy in the future.


Assuntos
Tomografia por Emissão de Pósitrons combinada à Tomografia Computadorizada , Neoplasias da Próstata , Masculino , Humanos , Idoso , Tomografia por Emissão de Pósitrons combinada à Tomografia Computadorizada/métodos , Recidiva Local de Neoplasia , Neoplasias da Próstata/patologia , Oligopeptídeos , Doença Crônica
14.
J Urol ; 186(6): 2175-81, 2011 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-22014800

RESUMO

PURPOSE: The 7th edition of TNM for renal cell carcinoma introduced a subdivision of pT2 tumors at a 10 cm cutoff. In the present multicenter study the influence of tumor size as well as further clinical and histopathological parameters on cancer specific survival in patients with pT2 tumors was evaluated. MATERIALS AND METHODS: A total of 670 consecutive patients with pT2 tumors (10.4%) of 6,442 surgically treated patients with all tumor stages were pooled (mean followup 71.4 months). Tumors were reclassified according to the current TNM classification, and subdivided in stages pT2a and pT2b. Cancer specific survival was analyzed using the Kaplan-Meier method, and univariable and multivariable analyses were used to assess the influence of several parameters on survival. RESULTS: Tumor size continuously applied and subdivided at 10 cm or alternative cutoffs did not significantly influence cancer specific survival. In addition to N/M stage, Fuhrman grade and collecting system invasion also had an independent influence on survival. Integration of a dichotomous variable subsuming Fuhrman grade and collecting system invasion (grade 3/4 and/or collecting system invasion present vs grade 1/2 and collecting system invasion absent) into multivariate models including established prognostic parameters resulted in improvement of predictive abilities by 11% (HR 2.3, p <0.001) for all pT2 cases and 151% (HR 3.1, p <0.001) for stage pT2N0M0 cases. CONCLUSIONS: Tumor size did not have a significant influence on cancer specific survival in pT2 tumors, neither continuously applied nor based on various cutoff values. To enhance prognostic discrimination, multifactorial staging systems including pathological features should be implemented. The prognostic relevance of the variable subsuming Fuhrman grade and collecting system invasion should be considered for future evaluation.


Assuntos
Carcinoma de Células Renais/mortalidade , Carcinoma de Células Renais/patologia , Neoplasias Renais/mortalidade , Neoplasias Renais/patologia , Túbulos Renais Coletores , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Gradação de Tumores , Invasividade Neoplásica , Estadiamento de Neoplasias , Prognóstico , Taxa de Sobrevida , Carga Tumoral , Adulto Jovem
15.
Urologe A ; 48(5): 510-5, 2009 May.
Artigo em Alemão | MEDLINE | ID: mdl-19421801

RESUMO

Pelvic organ prolapse is a widespread condition that especially affects women. There are a number of conservative and surgical therapeutic options. The choice of therapy should be individually made, depending on factors such as the grade of prolapse and concomitant secondary disorders as well as the age and general condition of the patient. This article presents current surgical options, analyzes recent studies, and offers future perspectives for reconstructive pelvic surgery.


Assuntos
Diafragma da Pelve/cirurgia , Incontinência Urinária por Estresse/cirurgia , Prolapso Uterino/cirurgia , Terapia Combinada , Estudos Transversais , Feminino , Humanos , Laparoscopia , Complicações Pós-Operatórias/etiologia , Complicações Pós-Operatórias/cirurgia , Recidiva , Reoperação , Sacro/cirurgia , Slings Suburetrais , Telas Cirúrgicas , Suturas , Incontinência Urinária por Estresse/diagnóstico , Incontinência Urinária por Estresse/epidemiologia , Prolapso Uterino/diagnóstico , Prolapso Uterino/epidemiologia , Vagina/cirurgia
16.
Unfallchirurg ; 112(3): 317-25; quiz 326, 2009 Mar.
Artigo em Alemão | MEDLINE | ID: mdl-19277757

RESUMO

Most renal injuries in industrialized countries are caused by blunt trauma to the kidney. The management of renal trauma has always been and will always be controversial. Conservative management and aggressive intervention both have their proponents, but conservative treatment is generally favored nowadays, even in the case of grade IV/(V) trauma. Urinary diversion by nephrostomy tube or ureteral stenting is not mandatory in most cases because the extravasation resolves in up to 90% of cases. Overall, there is a tendency toward a multimodal approach in which the interventional radiologist is more and more often part of the team that takes care of the patient with high-grade injuries. The success rate of angioembolization is 70-80%. Long-term consequences can be hypertension or diminished kidney function.


Assuntos
Embolização Terapêutica/métodos , Rim/diagnóstico por imagem , Rim/lesões , Procedimentos de Cirurgia Plástica/métodos , Radiografia Intervencionista/métodos , Ferimentos não Penetrantes/diagnóstico por imagem , Ferimentos não Penetrantes/terapia , Humanos
17.
Pathologe ; 29(4): 305-7, 2008 Jul.
Artigo em Alemão | MEDLINE | ID: mdl-18274750

RESUMO

During embryonic development the urachus connects the bladder with the umbilical cord. The urachus obliterates postnatally. Incomplete obliterations result in urachal cysts which, in the case of a connection to the bladder, are termed urachal diverticula. Urachal tumors are rare. We report on the case of a 46-year-old female patient with a 13-year history of recurrent bladder infections and mucusuria caused by an urachal diverticulum. After surgical resection histologic examination showed a mucus producing, intestinally differentiated adenoma within the diverticulum. This finding explains both the recurrent infections and the 10-year history of mucusuria.


Assuntos
Divertículo/patologia , Cisto do Úraco/patologia , Divertículo/complicações , Feminino , Humanos , Infecções/patologia , Pessoa de Meia-Idade , Recidiva , Cisto do Úraco/cirurgia , Úraco/anormalidades , Úraco/patologia , Doenças da Bexiga Urinária/patologia
18.
Urologe A ; 47(6): 759-67; quiz 768, 2008 Jun.
Artigo em Alemão | MEDLINE | ID: mdl-18478197

RESUMO

Most renal injuries in industrialized countries are caused by blunt trauma to the kidney. The management of renal trauma has always been and will always be controversial. Conservative management and aggressive intervention both have their proponents, but conservative treatment is generally favored nowadays, even in the case of grade IV/(V) trauma. Urinary diversion by nephrostomy tube or ureteral stenting is not mandatory in most cases because the extravasation resolves in up to 90% of cases. Overall, there is a tendency toward a multimodal approach in which the interventional radiologist is more and more often part of the team that takes care of the patient with high-grade injuries. The success rate of angioembolization is 70-80%. Long-term consequences can be hypertension or diminished kidney function.


Assuntos
Embolização Terapêutica/métodos , Rim/diagnóstico por imagem , Rim/lesões , Procedimentos de Cirurgia Plástica/métodos , Radiografia Intervencionista/métodos , Ferimentos não Penetrantes/diagnóstico por imagem , Ferimentos não Penetrantes/terapia , Humanos , Rim/efeitos dos fármacos , Rim/cirurgia
19.
Urologe A ; 47(3): 345-7, 2008 Mar.
Artigo em Alemão | MEDLINE | ID: mdl-18210069

RESUMO

Familial Mediterranean fever (FMF) can present cutaneous symptoms. In the reported case, infiltrating perineal and scrotal inflammation were attributed to FMF and treated by systemic medication with colchicine. The poor outcome of this conservative approach and pathognomonic axillary dermatological findings allowed the diagnosis of acne inversa to be made. Knowledge of this clinical picture possibly including genital manifestations is crucial, as early excision of all affected regions is the therapy of choice that enables healing.


Assuntos
Abscesso/diagnóstico , Acne Vulgar/diagnóstico , Infecções por Bacteroides/diagnóstico , Bacteroides fragilis , Fístula Cutânea/diagnóstico , Febre Familiar do Mediterrâneo/diagnóstico , Doenças dos Genitais Masculinos/diagnóstico , Períneo , Escroto , Abscesso/patologia , Abscesso/cirurgia , Acne Vulgar/patologia , Acne Vulgar/cirurgia , Adulto , Antibioticoprofilaxia , Infecções por Bacteroides/patologia , Infecções por Bacteroides/cirurgia , Fístula Cutânea/patologia , Fístula Cutânea/cirurgia , Diagnóstico Diferencial , Febre Familiar do Mediterrâneo/patologia , Febre Familiar do Mediterrâneo/cirurgia , Doenças dos Genitais Masculinos/patologia , Doenças dos Genitais Masculinos/cirurgia , Humanos , Masculino , Períneo/patologia , Períneo/cirurgia , Escroto/patologia , Escroto/cirurgia , Pele/patologia
20.
Urologe A ; 46(3): 240-3, 2007 Mar.
Artigo em Alemão | MEDLINE | ID: mdl-17294152

RESUMO

The majority of male patients affected by stress incontinence developed this disturbance after radical prostatectomy or less frequently after TURP. Urodynamic evaluation shows sphincter insufficiency in more than 90% of the patients. The conservative therapy of postprostatectomy stress incontinence relies on physical methods, namely, pelvic floor muscle training with or without electrical or magnetic stimulation. However, evidence in favor of one or the other approach is limited. Since publication of the positive results with duloxetine in women, interest in medical therapy for men reporting postoperative stress incontinence has increased. Conclusive evidence in favor of duloxetine for prostatectomy-associated incontinence however is still missing.


Assuntos
Terapia por Estimulação Elétrica/métodos , Modalidades de Fisioterapia , Padrões de Prática Médica/tendências , Prostatectomia/efeitos adversos , Tiofenos/uso terapêutico , Incontinência Urinária por Estresse/etiologia , Cloridrato de Duloxetina , Alemanha , Humanos , Masculino , Guias de Prática Clínica como Assunto , Inibidores Seletivos de Recaptação de Serotonina/uso terapêutico , Incontinência Urinária por Estresse/terapia
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA