12 results on '"Frohneberg D"'
Search Results
2. Ileal Neobladder Principles of Function and Continence
- Author
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Frohneberg, D., primary, Bachor, R., additional, Egghart, G., additional, Miller, K., additional, and Hautmann, R., additional
- Published
- 1989
- Full Text
- View/download PDF
3. Transplantation of a Free Peritoneal Patch in Surgery of the Renal Pelvis and Ureter
- Author
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Thüroff, J.W., primary, Hutschenreiter, G., additional, Frohneberg, D., additional, and Hohenfellner, R., additional
- Published
- 1981
- Full Text
- View/download PDF
4. Selective Sacral Nerve Blockade for the Treatment of Unstable Bladders
- Author
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Müller, S.C., primary, Frohneberg, D., additional, Schwab, R., additional, and Thüroff, J.W., additional
- Published
- 1986
- Full Text
- View/download PDF
5. Identifying the Best Candidate for Radical Prostatectomy Among Patients with High-Risk Prostate Cancer
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Hendrik Van Poppel, Bruno Frea, Burkhard Kneitz, Jochen Walz, Bertrand Tombal, R. Jeffrey Karnes, Giansilvio Marchioro, Niccolo Passoni, Paolo Gontero, Steven Joniau, Francesco Montorsi, Firas Abdollah, Alberto Briganti, Detlef Frohneberg, Markus Graefen, Chris H. Bangma, Martin Spahn, Alessandro Tizzani, Urology, Briganti, Alberto, Joniau, S, Gontero, P, Abdollah, F, Passoni, Nm, Tombal, B, Marchioro, G, Kneitz, B, Walz, J, Frohneberg, D, Bangma, Ch, Graefen, M, Tizzani, A, Frea, B, Karnes, Rj, Montorsi, Francesco, Van Poppel, H, and Spahn, M.
- Subjects
Male ,Oncology ,medicine.medical_specialty ,Urology ,medicine.medical_treatment ,Disease ,urologic and male genital diseases ,Androgen deprivation therapy ,Prostate cancer ,SDG 3 - Good Health and Well-being ,Risk Factors ,Internal medicine ,Humans ,Medicine ,In patient ,Aged ,Retrospective Studies ,Prostatectomy ,business.industry ,Patient Selection ,Prostatic Neoplasms ,Retrospective cohort study ,Middle Aged ,Prostate-Specific Antigen ,Nomogram ,medicine.disease ,Nomograms ,Prostate-specific antigen ,Treatment Outcome ,Lymph Node Excision ,Neoplasm Grading ,business - Abstract
Background: The current role of radical prostatectomy (RP) in patients with high-risk disease remains controversial. Objective: To identify which high-risk prostate cancer (PCa) patients might have favorable pathologic outcomes when surgically treated. Design, setting, and participants: We evaluated 1366 patients with high-risk PCa (ie, at least one of the following risk factors: prostate-specific antigen [PSA] > 20 ng/ml, cT3, biopsy Gleason 8-10) treated with RP and pelvic lymph node dissection (PLND) at eight European centers between 1987 and 2009. A favorable pathologic outcome was defined as specimen-confined (SC) disease-namely, pT2-pT3a, node negative PCa with negative surgical margins. Intervention: All patients underwent radical retropubic prostatectomy and PLND. Measurements: Univariable and multivariable logistic regression models tested the association between predictors and SC disease. A logistic regression coefficient-based nomogram was developed and internally validated using 200 bootstrap resamples. The Kaplan-Meier method was used to depict biochemical recurrence (BCR) and cancer-specific survival (CSS) rates. Results and limitations: Overall, 505 of 1366 patients (37%) had SC disease at RP. All preoperative variables (ie, age and PSA at surgery, clinical stage, and biopsy Gleason sum) were independent predictors of SC PCa at RP (all p
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- 2012
6. Extended Versus Limited Lymph Node Dissection in Bladder Cancer Patients Undergoing Radical Cystectomy: Survival Results from a Prospective, Randomized Trial.
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Gschwend JE, Heck MM, Lehmann J, Rübben H, Albers P, Wolff JM, Frohneberg D, de Geeter P, Heidenreich A, Kälble T, Stöckle M, Schnöller T, Stenzl A, Müller M, Truss M, Roth S, Liehr UB, Leißner J, Bregenzer T, and Retz M
- Subjects
- Aged, Chemotherapy, Adjuvant, Cystectomy adverse effects, Cystectomy mortality, Disease Progression, Female, Germany, Humans, Lymph Node Excision adverse effects, Lymph Node Excision mortality, Lymphatic Metastasis, Male, Middle Aged, Neoplasm Invasiveness, Neoplasm Staging, Progression-Free Survival, Prospective Studies, Risk Assessment, Risk Factors, Time Factors, Urinary Bladder Neoplasms mortality, Urinary Bladder Neoplasms pathology, Cystectomy methods, Lymph Node Excision methods, Urinary Bladder Neoplasms surgery
- Abstract
Background: The extent of lymph node dissection (LND) in bladder cancer (BCa) patients at the time of radical cystectomy may affect oncologic outcome., Objective: To evaluate whether extended versus limited LND prolongs recurrence-free survival (RFS)., Design, Setting, and Participants: Prospective, multicenter, phase-III trial patients with locally resectable T1G3 or muscle-invasive urothelial BCa (T2-T4aM0)., Intervention: Randomization to limited (obturator, and internal and external iliac nodes) versus extended LND (in addition, deep obturator, common iliac, presacral, paracaval, interaortocaval, and para-aortal nodes up to the inferior mesenteric artery)., Outcome Measurements and Statistical Analysis: The primary endpoint was RFS. Secondary endpoints included cancer-specific survival (CSS), overall survival (OS), and complications. The trial was designed to show 15% advantage of 5-yr RFS by extended LND., Results and Limitations: In total, 401 patients were randomized from February 2006 to August 2010 (203 limited, 198 extended). The median number of dissected nodes was 19 in the limited and 31 in the extended arm. Extended LND failed to show superiority over limited LND with regard to RFS (5-yr RFS 65% vs 59%; hazard ratio [HR]=0.84 [95% confidence interval 0.58-1.22]; p=0.36), CSS (5-yr CSS 76% vs 65%; HR=0.70; p=0.10), and OS (5-yr OS 59% vs 50%; HR=0.78; p=0.12). Clavien grade ≥3 lymphoceles were more frequently reported in the extended LND group within 90d after surgery. Inclusion of T1G3 tumors may have contributed to the negative study result., Conclusions: Extended LND failed to show a significant advantage over limited LND in RFS, CSS, and OS. A larger trial is required to determine whether extended compared with limited LND leads to a small, but clinically relevant, survival difference (ClinicalTrials.gov NCT01215071)., Patient Summary: In this study, we investigated the outcome in bladder cancer patients undergoing cystectomy based on the anatomic extent of lymph node resection. We found that extended removal of lymph nodes did not reduce the rate of tumor recurrence in the expected range., (Copyright © 2018 European Association of Urology. Published by Elsevier B.V. All rights reserved.)
- Published
- 2019
- Full Text
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7. Pretreatment tables predicting pathologic stage of locally advanced prostate cancer.
- Author
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Joniau S, Spahn M, Briganti A, Gandaglia G, Tombal B, Tosco L, Marchioro G, Hsu CY, Walz J, Kneitz B, Bader P, Frohneberg D, Tizzani A, Graefen M, van Cangh P, Karnes RJ, Montorsi F, van Poppel H, and Gontero P
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- Biopsy, Europe, Humans, Kallikreins blood, Logistic Models, Lymph Nodes pathology, Lymphatic Metastasis, Male, Neoplasm Grading, Neoplasm Staging, Patient Selection, Predictive Value of Tests, Prostate-Specific Antigen blood, Prostatic Neoplasms blood, Prostatic Neoplasms pathology, Reproducibility of Results, Retrospective Studies, Risk Factors, Treatment Outcome, Decision Support Techniques, Lymph Node Excision, Prostatectomy, Prostatic Neoplasms diagnosis, Prostatic Neoplasms surgery
- Abstract
Background: Pretreatment tables for the prediction of pathologic stage have been published and validated for localized prostate cancer (PCa). No such tables are available for locally advanced (cT3a) PCa., Objective: To construct tables predicting pathologic outcome after radical prostatectomy (RP) for patients with cT3a PCa with the aim to help guide treatment decisions in clinical practice., Design, Setting, and Participants: This was a multicenter retrospective cohort study including 759 consecutive patients with cT3a PCa treated with RP between 1987 and 2010., Intervention: Retropubic RP and pelvic lymphadenectomy., Outcome Measurements and Statistical Analysis: Patients were divided into pretreatment prostate-specific antigen (PSA) and biopsy Gleason score (GS) subgroups. These parameters were used to construct tables predicting pathologic outcome and the presence of positive lymph nodes (LNs) after RP for cT3a PCa using ordinal logistic regression., Results and Limitations: In the model predicting pathologic outcome, the main effects of biopsy GS and pretreatment PSA were significant. A higher GS and/or higher PSA level was associated with a more unfavorable pathologic outcome. The validation procedure, using a repeated split-sample method, showed good predictive ability. Regression analysis also showed an increasing probability of positive LNs with increasing PSA levels and/or higher GS. Limitations of the study are the retrospective design and the long study period., Conclusions: These novel tables predict pathologic stage after RP for patients with cT3a PCa based on pretreatment PSA level and biopsy GS. They can be used to guide decision making in men with locally advanced PCa., Patient Summary: Our study might provide physicians with a useful tool to predict pathologic stage in locally advanced prostate cancer that might help select patients who may need multimodal treatment., (Copyright © 2014 European Association of Urology. Published by Elsevier B.V. All rights reserved.)
- Published
- 2015
- Full Text
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8. Stratification of high-risk prostate cancer into prognostic categories: a European multi-institutional study.
- Author
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Joniau S, Briganti A, Gontero P, Gandaglia G, Tosco L, Fieuws S, Tombal B, Marchioro G, Walz J, Kneitz B, Bader P, Frohneberg D, Tizzani A, Graefen M, van Cangh P, Karnes RJ, Montorsi F, Van Poppel H, and Spahn M
- Subjects
- Aged, Area Under Curve, Disease-Free Survival, Europe, Humans, Male, Middle Aged, Neoplasm Grading, Neoplasm Staging, Predictive Value of Tests, Proportional Hazards Models, Prostate-Specific Antigen blood, Prostatic Neoplasms blood, Retrospective Studies, Risk Assessment methods, Risk Factors, Survival Rate, Prostatic Neoplasms classification, Prostatic Neoplasms pathology
- Abstract
Background: High-risk prostate cancer (PCa) is an extremely heterogeneous disease. A clear definition of prognostic subgroups is mandatory., Objective: To develop a pretreatment prognostic model for PCa-specific survival (PCSS) in high-risk PCa based on combinations of unfavorable risk factors., Design, Setting, and Participants: We conducted a retrospective multicenter cohort study including 1360 consecutive patients with high-risk PCa treated at eight European high-volume centers., Intervention: Retropubic radical prostatectomy with pelvic lymphadenectomy., Outcome Measurements and Statistical Analysis: Two Cox multivariable regression models were constructed to predict PCSS as a function of dichotomization of clinical stage (< cT3 vs cT3-4), Gleason score (GS) (2-7 vs 8-10), and prostate-specific antigen (PSA; ≤ 20 ng/ml vs > 20 ng/ml). The first "extended" model includes all seven possible combinations; the second "simplified" model includes three subgroups: a good prognosis subgroup (one single high-risk factor); an intermediate prognosis subgroup (PSA >20 ng/ml and stage cT3-4); and a poor prognosis subgroup (GS 8-10 in combination with at least one other high-risk factor). The predictive accuracy of the models was summarized and compared. Survival estimates and clinical and pathologic outcomes were compared between the three subgroups., Results and Limitations: The simplified model yielded an R(2) of 33% with a 5-yr area under the curve (AUC) of 0.70 with no significant loss of predictive accuracy compared with the extended model (R(2): 34%; AUC: 0.71). The 5- and 10-yr PCSS rates were 98.7% and 95.4%, 96.5% and 88.3%, 88.8% and 79.7%, for the good, intermediate, and poor prognosis subgroups, respectively (p = 0.0003). Overall survival, clinical progression-free survival, and histopathologic outcomes significantly worsened in a stepwise fashion from the good to the poor prognosis subgroups. Limitations of the study are the retrospective design and the long study period., Conclusions: This study presents an intuitive and easy-to-use stratification of high-risk PCa into three prognostic subgroups. The model is useful for counseling and decision making in the pretreatment setting., (Copyright © 2014 European Association of Urology. Published by Elsevier B.V. All rights reserved.)
- Published
- 2015
- Full Text
- View/download PDF
9. Identifying the best candidate for radical prostatectomy among patients with high-risk prostate cancer.
- Author
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Briganti A, Joniau S, Gontero P, Abdollah F, Passoni NM, Tombal B, Marchioro G, Kneitz B, Walz J, Frohneberg D, Bangma CH, Graefen M, Tizzani A, Frea B, Karnes RJ, Montorsi F, Van Poppel H, and Spahn M
- Subjects
- Aged, Humans, Lymph Node Excision, Male, Middle Aged, Neoplasm Grading, Nomograms, Prostate-Specific Antigen blood, Prostatic Neoplasms mortality, Prostatic Neoplasms pathology, Retrospective Studies, Risk Factors, Treatment Outcome, Patient Selection, Prostatectomy methods, Prostatic Neoplasms surgery
- Abstract
Background: The current role of radical prostatectomy (RP) in patients with high-risk disease remains controversial., Objective: To identify which high-risk prostate cancer (PCa) patients might have favorable pathologic outcomes when surgically treated., Design, Setting, and Participants: We evaluated 1366 patients with high-risk PCa (ie, at least one of the following risk factors: prostate-specific antigen [PSA]>20 ng/ml, cT3, biopsy Gleason 8-10) treated with RP and pelvic lymph node dissection (PLND) at eight European centers between 1987 and 2009. A favorable pathologic outcome was defined as specimen-confined (SC) disease-namely, pT2-pT3a, node negative PCa with negative surgical margins., Intervention: All patients underwent radical retropubic prostatectomy and PLND., Measurements: Univariable and multivariable logistic regression models tested the association between predictors and SC disease. A logistic regression coefficient-based nomogram was developed and internally validated using 200 bootstrap resamples. The Kaplan-Meier method was used to depict biochemical recurrence (BCR) and cancer-specific survival (CSS) rates., Results and Limitations: Overall, 505 of 1366 patients (37%) had SC disease at RP. All preoperative variables (ie, age and PSA at surgery, clinical stage, and biopsy Gleason sum) were independent predictors of SC PCa at RP (all p≤0.04). Patients with SC disease had significantly higher 10-yr BCR-free survival and CSS rates than patients without SC disease at RP (66% vs 47% and 98 vs 88%, respectively; all p<0.001). A nomogram including PSA, age, clinical stage, and biopsy Gleason sum demonstrated 72% accuracy in predicting SC PCa. This study is limited by its retrospective design and by the lack of an external validation of the nomogram., Conclusions: Roughly 40% of patients with high-risk PCa have SC disease at final pathology. These patients showed excellent long-term outcomes when surgically treated, thus representing the ideal candidates for RP as the primary treatment for PCa. Prediction of such patients is possible using a nomogram based on routinely available clinical parameters., (Copyright © 2011 European Association of Urology. Published by Elsevier B.V. All rights reserved.)
- Published
- 2012
- Full Text
- View/download PDF
10. Outcome predictors of radical prostatectomy in patients with prostate-specific antigen greater than 20 ng/ml: a European multi-institutional study of 712 patients.
- Author
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Spahn M, Joniau S, Gontero P, Fieuws S, Marchioro G, Tombal B, Kneitz B, Hsu CY, Van Der Eeckt K, Bader P, Frohneberg D, Tizzani A, and Van Poppel H
- Subjects
- Aged, Carcinoma blood, Carcinoma surgery, Cohort Studies, Europe, Follow-Up Studies, Humans, Lymph Node Excision methods, Male, Middle Aged, Neoplasm Recurrence, Local mortality, Neoplasm Recurrence, Local pathology, Neoplasm Staging, Prognosis, Prostate pathology, Prostate surgery, Prostatic Neoplasms blood, Prostatic Neoplasms surgery, Retrospective Studies, Risk Factors, Treatment Outcome, Carcinoma mortality, Prostate-Specific Antigen blood, Prostatectomy methods, Prostatic Neoplasms mortality
- Abstract
Background: Prostate cancer (PCa) patients with pretreatment prostate-specific antigen (PSA) >20 ng/ml have a high risk of biochemical and clinical failure and even cancer-related death after local therapy. Pretreatment predictors of outcome after radical prostatectomy (RP) in this patient group are necessary., Objective: Our aim was to assess how the use of additional high-risk factors (biopsy Gleason score [bGS] > or = 8 or clinical stage 3-4) can improve prediction of treatment failure and cancer-related death after RP in patients with PSA >20., Design, Setting, and Participants: In a retrospective multicentre cohort study from six European centres between 1987 and 2005, 712 patients with PSA >20 ng/ml underwent RP and bilateral pelvic lymphadenectomy., Measurements: Subgroups were analysed to determine the relationship between the number of high-risk factors and histopathology, biochemical progression-free survival, clinical evidence of progressive disease, prostate cancer-specific mortality (PCSM), and overall mortality. Kaplan-Meier analysis with log-rank test and Cox multivariable analysis were applied., Results and Limitations: Median follow-up was 77 mo. The number of high-risk factors was significantly associated with unfavourable histopathology. Among patients with only PSA >20 ng/ml, 33% had pT2 PCa, 57.9% had bGS <7, 54% had negative surgical margins, and 85% were lymph node negative (pN0), whereas among patients with all three high-risk factors, 4.5% had pT2 PCa, 2.3% had bGS <7, 20.5% had negative margins, and 49% were pN0 (p<0.001). The strongest predictor of progression and mortality was bGS. PSA >20 ng/ml associated with bGS < or =7 resulted in 10-yr PCSM of 5%; when associated with bGS > or =8, PCSM was 35%. The main limitations of the study were retrospective design and varying treatment modalities., Conclusions: PCa patients with PSA >20 ng/ml have varying risk levels of disease progression and PCSM. Considering additional risk factors further stratifies this group into four subgroups that can guide the clinician in preoperative patient counselling., (Copyright 2010 European Association of Urology. Published by Elsevier B.V. All rights reserved.)
- Published
- 2010
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11. Posterior urethral valves: theoretical considerations on embryological development.
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Frohneberg DH, Thüroff JW, and Riedmiller H
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- Adult, Humans, Infant, Male, Urethra embryology, Wolffian Ducts anatomy & histology, Urethra abnormalities, Urethral Obstruction etiology
- Abstract
Among congenital urethral malformations, posterior urethral valves represent one of the main causes of severe infravesical obstruction in children, the etiology and embryological development of which remains unclear. Posterior urethral valves of types I and III are supposed to be related to either the persistence of connective tissue along the pathway of migration of the Wolffian duct (type I) or a residual part of the endodermal urogenital membrane (type III). A possible reason for supramontane urethral valves (type II) is seen in the persistence of crest-shaped tissue along the ureter's pathway in embryological development to its final site, although there is some doubt as to the existence of type II valves and they were not seen in the 65 cases of posterior urethral valves in our own material.
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- 1982
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12. Ureterosigmoidostomy in bladder exstrophy.
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Frohneberg DH, Hohenfellner R, and Straub E
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- Adolescent, Adult, Child, Child, Preschool, Colon, Sigmoid surgery, Epispadias surgery, Female, Humans, Infant, Male, Postoperative Complications, Prognosis, Bladder Exstrophy surgery, Urinary Diversion
- Abstract
Experience with ureterosigmoidostomy (US) using a reflux prevention technique in 38 of 48 cases of bladder exstrophy is reviewed. During a follow-up period of 14 years, the results were excellent as to morphological changes of the upper urinary tract, incontinence, psychological development and social behavior. Within their families the patients are considered healthy. Even in children with benign disease, US with reflux prevention performed during the second year of life is the operation of choice for urinary diversion. In the postoperative follow-up it is recommended that sigmoidoscopy be performed once a year in addition to routine controls of the upper urinary tract and metabolic balance.
- Published
- 1983
- Full Text
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