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1.
World J Urol ; 39(1): 89-95, 2021 Jan.
Article in English | MEDLINE | ID: mdl-32236662

ABSTRACT

OBJECTIVES: To investigate the predictors of recurrence and of de novo incontinence in patients treated by transurethral incision or resection for vesico-urethral anastomotic stenosis (VUAS) after radical prostatectomy. MATERIAL AND METHODS: All patients undergoing endoscopic treatment for VUAS between March 2009 and October 2016 were identified in our multi-institutional database. Digital chart reviews were performed and patients contacted for follow-up. Recurrence was defined as any need for further instrumentation or surgery, and de-novo-incontinence as patient-reported outcome. RESULTS: Of 103 patients undergoing endoscopic VUAS treatment, 67 (65%) underwent transurethral resection (TR) and 36 (35%) transurethral incision (TI). TI was performed more frequently as primary treatment compared to TR (58% vs. 37%; p = 0.041). Primary and repeated treatment was performed in 46 (45%) and 57 patients (55%), respectively. Overall, 38 patients (37%) had a history of radiation therapy. There was no difference in time to recurrence for primary vs repeat VUAS treatment, previous vs no radiation, TR compared to TI (all p > 0.08). Regarding treatment success, no difference was found for primary vs. repeat VUAS treatment (50% vs. 37%), previous radiation vs. no radiation (42% vs. 43%), and TR vs. TI (37% vs. 53%; all p ≥ 0.1). Postoperative de novo incontinence was more common after TI vs. TR (31% vs. 12%; p = 0.032), no difference was observed for previous radiation therapy vs. no radiation therapy (18% vs. 18%; p > 0.9) or primary vs. repeat VUAS treatment (22% vs. 16%; p = 0.5). CONCLUSION: VUAS recurrence after endoscopic treatment is not predictable. Endoscopic treatment with TI showed a higher risk for de novo incontinence than TR, and previous irradiation and the number of treatments do not influence incontinence.


Subject(s)
Postoperative Complications/surgery , Prostatectomy , Prostatic Neoplasms/radiotherapy , Prostatic Neoplasms/surgery , Urethra/surgery , Urethral Stricture/surgery , Urinary Bladder/surgery , Aged , Anastomosis, Surgical , Constriction, Pathologic , Endoscopy , Humans , Male , Prostatectomy/methods , Retrospective Studies , Treatment Outcome
2.
World J Urol ; 36(5): 789-792, 2018 May.
Article in English | MEDLINE | ID: mdl-29372355

ABSTRACT

INTRODUCTION AND OBJECTIVE: Renal tumor biopsy is recommended for histological diagnosis of radiologically indeterminate renal masses, to select patients with small-renal masses for surveillance approaches, before ablative treatments and to confirm metastatic spread of renal cell cancer (RCC), according to the EAU guidelines. We aimed to determine outcomes of patients with suspicious renal masses with initial finding of regular renal tissue in renal tumor biopsies. METHODS: Retrospective database analysis of 101 patients undergoing CT-guided-, percutaneous renal tumor biopsies in local anesthesia. RESULTS: In 23/101 patients, histopathologic evaluation of the biopsies showed regular renal tissue. Of these, two patients underwent simultaneous radiofrequency ablation (RFA), 2/23 underwent radical nephrectomy, despite negative biopsy because of radiological suspicious aspect. Overall, 12 patients underwent a second set of biopsies due to persistent clinical suspicion. Of these, five were diagnosed with RCC: three clear cell renal cell carcinoma (ccRCC) and two papillary renal cell carcinoma (pRCC). Benign tumours were found in two patients. A lymphoma was found in two patients. In 3/12 patients, also the second set of biopsies showed regular renal tissue. CONCLUSION: An unsuspicious histology in CT-guided renal tumor biopsy does not preclude patients with suspicious renal masses from being diagnosed with malignancies.


Subject(s)
Carcinoma, Renal Cell , Catheter Ablation/statistics & numerical data , Kidney Neoplasms , Kidney , Nephrectomy/statistics & numerical data , Biopsy, Needle/methods , Carcinoma, Renal Cell/diagnosis , Carcinoma, Renal Cell/pathology , Female , Germany , Humans , Image-Guided Biopsy/methods , Kidney/diagnostic imaging , Kidney/pathology , Kidney Neoplasms/diagnosis , Kidney Neoplasms/pathology , Male , Middle Aged , Neoplasm Staging , Patient Outcome Assessment , Predictive Value of Tests , Prognosis , Tomography, X-Ray Computed/methods , Tumor Burden
3.
Gesundheitswesen ; 80(2): 94-100, 2018 Feb.
Article in German | MEDLINE | ID: mdl-27300091

ABSTRACT

OBJECTIVES: This study examines social inequalities in the utilization of medical rehabilitation, complementary and alternative medicine (CAM) and psychosocial support programs among patients with prostate and breast cancer after surgery. METHOD: A prospective, multicenter observational study was conducted. Subjects were 483 patients after primary manifestation of prostate and breast cancer (UICC-Stadium 0-IV) aged between 18 and 65 years. Patients were asked to fill out a questionnaire after surgery and 6 months later. Social inequality was measured by education, income and occupational status. In addition, the insurance status (private vs. statutory) was taken into account. Logistic regression models were used separately for each cancer site. The analyses were controlled for age, tumor stage and mental comorbidity. RESULTS: The associations between social inequality and the utilization of aftercare services vary by inequality indicator and the different health care services. Inequalities in utilization of CAM are most pronounced and consistent. Differences between status groups are small in utilization of rehabilitation. Among breast cancer patients, inequalities are more pronounced than among prostate cancer patients. CONCLUSION: Social inequalities in utilization of aftercare services among breast and prostate cancer patients are inconsistent. Future investigations should clarify to what extent such inequalities are due to access barriers or due to differences in health literacy or preferences.


Subject(s)
Aftercare , Prostatic Neoplasms , Social Class , Adolescent , Adult , Aged , Germany , Healthcare Disparities , Humans , Male , Middle Aged , Prospective Studies , Prostatic Neoplasms/therapy , Socioeconomic Factors , Young Adult
4.
World J Urol ; 34(10): 1437-42, 2016 Oct.
Article in English | MEDLINE | ID: mdl-26873595

ABSTRACT

OBJECTIVE: To describe a modified surgical technique for treatment of highly recurrent bladder neck contracture (BNC) after transurethral surgery for benign hyperplasia and to evaluate success rate and patient satisfaction of this novel technique. METHODS: Ten patients with highly recurrent BNC and multiple prior attempts of endoscopic treatment underwent the T-plasty. Perioperative complications were recorded and classified according to the Clavien classification. Patient reported functional outcomes were retrospectively analysed using a standardized questionnaire assessing recurrence of stenosis, incontinence, satisfaction and changes in quality of life (QoL). The questionnaires included validated IPSS and SF-8-health survey items. RESULTS: Mean age at the time of surgery was 69.2 years (range 61-79), and the mean follow-up was 26 months (range 3-46). No complications grade 3 or higher according to the Clavien classification occurred. Success rate was 100 %. No de novo stress incontinence occurred. Urinary stream was described as very strong to moderate by 80 % of the patients, mean post-operative IPSS-score was 11.3 (range 4-29), and mean post-operative IPSS-QoL was 2.4 (range 1-5). Patients satisfaction was very high or high in 90 %, and QoL improved in 90 %. The SF-8-health survey showed values comparable to the reference population. CONCLUSION: The T-plasty represents a safe and valuable option in treating highly recurrent BNC after surgery for benign hyperplasia. It offers multiple advantages compared to other techniques such as a single-staged approach and the opportunity for reconstruction of a reliable wide bladder neck by usage of two well-vascularized flaps. Success rate, low rate of complications and preservation of continence are highly encouraging.


Subject(s)
Patient Satisfaction , Plastic Surgery Procedures/methods , Prostatic Hyperplasia/surgery , Quality of Life , Transurethral Resection of Prostate/methods , Urinary Bladder Neck Obstruction/surgery , Urologic Surgical Procedures/methods , Aged , Follow-Up Studies , Humans , Male , Middle Aged , Prostatic Hyperplasia/complications , Retrospective Studies , Time Factors , Treatment Outcome , Urinary Bladder/surgery , Urinary Bladder Neck Obstruction/etiology
5.
Minerva Urol Nefrol ; 67(2): 103-15, 2015 Jun.
Article in English | MEDLINE | ID: mdl-25604695

ABSTRACT

Systemic chemotherapy is the standard treatment of advanced and metastatic urothelial carcinoma of the bladder (UCB). Unfortunately, systemic chemotherapy is ineffective in a significant number of patients, while side effects occur frequently. Detailed molecular-genetic investigations revealed a broad heterogeneity of underlying genomic mutations in UCB and led to the detection of cancer-specific therapeutic targets. These findings may allow a more tailored and individualized patient-based therapy, focusing on specific genomic variations, which may cause chemo-resistance in patients progressing or relapsing after standard chemotherapy. Targeted therapies hold the potential to be more effective in inhibiting cancer cell growth and progression, as well as to cause fewer side effects. While targeted therapies have been successfully established in the treatment of various malignancies including renal cell carcinoma, the clinical impact of these modern treatment strategies still remains unsettled for UCB. In this review, we comprehensively summarize the most current and relevant findings on targeted therapy in advanced and metastatic UCB, elucidating chances and limitations and discussing future perspectives.


Subject(s)
Antineoplastic Combined Chemotherapy Protocols/therapeutic use , Carcinoma, Transitional Cell/drug therapy , Carcinoma, Transitional Cell/genetics , Molecular Targeted Therapy , Mutation , Urinary Bladder Neoplasms/drug therapy , Urinary Bladder Neoplasms/genetics , Vascular Endothelial Growth Factor A/drug effects , Chemotherapy, Adjuvant/methods , Clinical Trials as Topic , Evidence-Based Medicine , Genomics , Humans , Immunotherapy/methods , Molecular Targeted Therapy/methods , Neoplasm Staging , Prognosis , Treatment Outcome , Vascular Endothelial Growth Factor A/genetics
6.
World J Urol ; 32(5): 1205-11, 2014 Oct.
Article in English | MEDLINE | ID: mdl-24166288

ABSTRACT

PURPOSE: To examine the significance of 90 biomarkers for predicting metastatic status in non-seminomatous germ cell tumors (NSGCT). By predicting metastatic status, it may be possible to eliminate unnecessary therapeutic or diagnostic efforts. MATERIALS AND METHODS: We investigated 552 males who were diagnosed with non-metastatic (n = 273) and metastatic (n = 279) NSGCT between 2000 and 2011. The sample included cancers of different histologies: embryonal cell carcinoma (n = 131), teratoma (n = 55), and mixed histology (n = 366). We collected and analyzed more than 90 parameters via logistic regression: demographic characteristics, medical history, histopathological parameters, and levels of tumor markers and hormones. RESULTS: Testis histology (p = 0.004), clinical symptoms (p = 0.0005), tumor length (p = 0.005), infiltration of the rete testis (p = 0.008), invasion of lymphatic (pL1) and blood vessels (pV1) (p < 0.0001), and levels of enzymes such as LDH, ßHCG, AFP, and FSH (p values as small as <0.0001) were associated with metastatic status. With one model, we identified 14 out of 76 (18.4 %) metastatic NSGCT cases with 93-100 % certainty (positive predictive value) at 99 % specificity by the peripheral blood levels of LDH (day of operation) in combination with FSH measurements (1 day after operation). A second model included pV, tumor length, and FSH (1 day after operation). It identified 25 out of 90 (27.8 %) non-metastatic NSGCT with approximately 90 % certainty (negative predictive value) at 94-98 % sensitivity. CONCLUSIONS: No single parameter was able to discriminate metastatic from non-metastatic NSGCT, but combinations of parameters in two predictive models accurately identified the metastatic status in 23 % of the cases in our sample.


Subject(s)
Models, Statistical , Neoplasms, Germ Cell and Embryonal/secondary , Testicular Neoplasms/pathology , Humans , Male , Neoplasms, Germ Cell and Embryonal/epidemiology , Prognosis , Retrospective Studies , Risk Assessment
7.
Arch Esp Urol ; 67(1): 104-10, 2014.
Article in English | MEDLINE | ID: mdl-24531677

ABSTRACT

Patients with panurethral and complex urethral strictures after failed urethral reconstruction due to strictures and hypospadias repair is a rare but challenging condition. Contemporary surgical techniques include one and two staged urethroplasties using different graft substitutes (i.e., buccal mucosa) or full thickness skin grafts (i.e., from the inner thigh(, thereby providing satisfactory results with reducing the re-stricture rate in these patients. However, all current techniques do so at the expense of higher revision rates and thus requiring multiple procedures. Studies investigating the outcomes of reconstruction in panurethral and complex urethral strictures often have heterogeneous patient cohorts including children and adults, different underlying causes, and different techniques, thus allowing only limited interpretation of the published data. In the field of urethral reconstruction, where personal experience and expertise presents an accepted necessity, however, leading to rather small single center studies,only well-designed randomized clinical trials can truly answer the question of which technique will be advantageous in these patients.


Subject(s)
Plastic Surgery Procedures/methods , Urethral Stricture/surgery , Urologic Surgical Procedures, Male/methods , Adult , Child , Humans , Hypospadias/surgery , Male , Postoperative Complications/etiology , Postoperative Complications/prevention & control , Postoperative Complications/surgery , Plastic Surgery Procedures/trends , Recurrence , Retrospective Studies , Treatment Outcome , Urethral Stricture/pathology , Urologic Surgical Procedures, Male/trends
8.
Article in English, Spanish | MEDLINE | ID: mdl-38754730

ABSTRACT

INTRODUCTION AND OBJECTIVES: Female urethral strictures are a rare condition that significantly impacts patients' quality of life. Patient-reported outcomes are crucial, yet data regarding sexual function and treatment satisfaction are scarce. We aimed to provide insights from a reconstructive referral center. PATIENTS AND METHODS: We conducted a retrospective analysis of women treated with ventral onlay one-stage buccal mucosa graft urethroplasty for urethral strictures between 2009-2023. We assessed objective (retreatment-free survival, ΔQmax) and subjective outcomes (validated patient-reported outcomes). RESULTS: Of 12 women, 83% and 17% had iatrogenic and idiopathic strictures, respectively. Median number of prior interventions was 6. Strictures were located meatal and mid-urethral in 25% and 75%, respectively, 22% had the bladder neck involved. Median graft length was 2 cm. At median follow-up of 66 months, 33% of patients underwent stricture retreatment, but only one case occurred within the first 2 years postoperatively. The median improvement in maximum flow rate (ΔQmax) was 10 ml/s. Median International Consultation on Incontinence Questionnaire Female Lower Urinary Tract Symptoms Modules (ICIQ-FLUTS) scores were 8 for filling symptoms, 6 for voiding symptoms, and 3 for incontinence symptoms. Median ICIQ-FLUTSsex score was 4. Higher scores indicate a higher symptom burden. Median ICIQ-Satisfaction outcome and satisfaction scores were 18 and 7, respectively, reflecting high treatment satisfaction. CONCLUSIONS: Buccal mucosal graft urethroplasty by ventral onlay for female urethral strictures yields effective, durable, and positively received outcomes. However, larger studies across multiple institutions are necessary to further assess its efficacy, especially regarding patient-reported experiences and sexual function.

9.
J Urol ; 190(3): 1046-51, 2013 Sep.
Article in English | MEDLINE | ID: mdl-23583226

ABSTRACT

PURPOSE: We screened 90 potential parameters as biomarkers of metastatic seminoma to facilitate detection and eliminate unnecessary therapeutic or diagnostic efforts. MATERIALS AND METHODS: A total of 527 men with pure seminoma (diagnosed 2000 to 2011) were followed during therapy. More than 90 demographic/anamnestic (eg age, height, weight) histopathological parameters (testicular/tumor size, testicular intraepithelial neoplasia) and levels of tumor markers (eg α-fetoprotein, ß-human chorionic gonadotropin, lactate dehydrogenase) in peripheral blood and testicular vein were collected for analysis via logistic regression. Previously described risk factors (tumors larger than 4 cm, infiltration of rete testis) were assessed separately. RESULTS: Established parameters such as tumor length (p = 0.0003), involvement of lymphatic (p <0.0001) or vascular channels (p = 0.0009), extent of primary tumor (p <0.0001) and infiltration of the tunica albuginea (p = 0.02) as well as new biomarkers such as absence of testicular intraepithelial neoplasia in tumor bearing testis (p = 0.03), testicular volume (p = 0.04) and tumor volume (p = 0.02) showed a significant association with metastatic disease. This association was also true of lactate dehydrogenase, human chorionic gonadotropin and α-fetoprotein (p <0.0001 at maximum). However, the discriminatory capacity of these biomarkers (concordance or ROC area) did not exceed 65% when examined alone or in combination, and higher values (up to 80%) were detected for enzyme levels. A subset of metastatic seminoma (2% to 27%) was detectable with high accuracy (positive predictive value 92% to 100%) based on enzyme measurements (p <0.0006). CONCLUSIONS: New biomarkers of metastatic seminoma were identified and previously described risk factors were validated. Further prospective studies of these novel parameters are warranted to verify our findings and to explore a potential use for detecting occult metastases.


Subject(s)
Biomarkers, Tumor/blood , Chorionic Gonadotropin, beta Subunit, Human/blood , Seminoma/secondary , Testicular Neoplasms/pathology , alpha-Fetoproteins/metabolism , Adult , Cohort Studies , Combined Modality Therapy/methods , Confidence Intervals , Follow-Up Studies , Humans , Immunohistochemistry , L-Lactate Dehydrogenase/blood , Male , Middle Aged , Multivariate Analysis , Neoplasm Invasiveness/pathology , Neoplasm Metastasis , Neoplasm Staging , Odds Ratio , Predictive Value of Tests , Retrospective Studies , Risk Assessment , Seminoma/blood , Seminoma/therapy , Testicular Neoplasms/blood , Testicular Neoplasms/therapy , Treatment Outcome , Tumor Burden
10.
Minerva Urol Nefrol ; 63(4): 293-308, 2011 Dec.
Article in English | MEDLINE | ID: mdl-21996985

ABSTRACT

Since the introduction of targeted therapies in renal cell carcinoma (RCC), more individualized treatment options have become available. Molecular markers might support treatment planning due to more accurate individual risk stratification. Current molecular markers in RCC were reviewed to elucidate clinical impact and future perspectives. An English-language literature review of the Medline database (1990 to September 2010) of published data on tissue-based molecular markers and RCC was undertaken. Histological types, clinical and oncological behaviour are variable in renal masses. Molecular markers offer potential for additional information in tumour detection and diagnosis, prognostic and predictive values, as well as determination of therapeutic targets. Investigations on molecular biomarkers in RCC include hypoxia inducible factor (HIF-α), vascular endothelial growth factor (VEGF), carbonic anhydrase IX (CAIX), mammalian target of rapamycin (mTOR), survivin, B7-H1, p53, matrix metalloproteinases (MMP), Insulin-like growth factor II mRNA-binding protein 3 (IMP3), Ki-67, C-reactive protein (CRP), Vimentin, Fascin, platelet count, hemoglobin level and combinations of these factors. Although some markers offer promising results, utilization in daily practice is compromised due to limited specificity, predictive accuracy and tumour histology variablity. There is an imminent need for novel molecular markers that allow accurate histologic and biologic classification of RCC to improve upon current outcomes. It is very likely that a panel of molecular markers will be used to achieve a sufficient degree of certainty in order to guide clinical decisions. A large concerted effort is required to advance the field of RCC molecular marker through systematic discovery, verification, and validation.


Subject(s)
Biomarkers, Tumor/metabolism , Carcinoma, Renal Cell/diagnosis , Carcinoma, Renal Cell/metabolism , Kidney Neoplasms/diagnosis , Kidney Neoplasms/metabolism , B7-H1 Antigen/metabolism , C-Reactive Protein/metabolism , Carbonic Anhydrases/metabolism , Carcinoma, Renal Cell/enzymology , Carrier Proteins/metabolism , Cysteine Proteinase Inhibitors/metabolism , Hemoglobins/metabolism , Humans , Hypoxia-Inducible Factor 1, alpha Subunit/metabolism , Inhibitor of Apoptosis Proteins/metabolism , Insulin-Like Growth Factor II/metabolism , Ki-67 Antigen/metabolism , Kidney Neoplasms/enzymology , Matrix Metalloproteinase 1/metabolism , Microfilament Proteins/metabolism , Platelet Count , Prognosis , RNA-Binding Proteins/metabolism , Survivin , TOR Serine-Threonine Kinases/metabolism , Tumor Suppressor Protein p53/metabolism , Vascular Endothelial Growth Factor A/metabolism , Vimentin/metabolism
11.
Nanotechnology ; 21(27): 274008, 2010 Jul 09.
Article in English | MEDLINE | ID: mdl-20571195

ABSTRACT

Optical microcavities and waveguides coupled to diamond are needed to enable efficient communication between quantum systems such as nitrogen-vacancy centers which are known already to have long electron spin coherence lifetimes. This paper describes recent progress in realizing microcavities with low loss and small mode volume in two hybrid systems: silica microdisks coupled to diamond nanoparticles, and gallium phosphide microdisks coupled to single-crystal diamond. A theoretical proposal for a gallium phosphide nanowire photonic crystal cavity coupled to diamond is also discussed. Comparing the two material systems, silica microdisks are easier to fabricate and test. However, at low temperature, nitrogen-vacancy centers in bulk diamond are spectrally more stable, and we expect that in the long term the bulk diamond approach will be better suited for on-chip integration of a photonic network.

12.
Urologe A ; 59(4): 489-498, 2020 Apr.
Article in German | MEDLINE | ID: mdl-32236687

ABSTRACT

Vesicovaginal fistulas are a rare problem in the western world but are frequent occurrences in developing countries. In Germany the most frequent cause is hysterectomy. Vesicovaginal fistulas can be treated by the transvaginal or transabdominal approach depending on the characteristics of the fistula and the patient. The incidence and complexity of urorectal fistulas increase with the number of cumulative sequences of prostate cancer treatment. Overall there is no clear consensus about the optimal surgical approach route. The surgical treatment of both vesicovaginal and urorectal fistulas is associated with high permanent fistula closure rates; however, for both entities if the fistula is discovered early enough, conservative treatment with a temporary catheter drainage can be tried, depending on the underlying cause. For both conditions fistula repair in irradiated patients shows a much lower success rate. A spontaneous closure of fistulas in radiogenic fistulas is also not to be expected.


Subject(s)
Hysterectomy/adverse effects , Prostatic Neoplasms/complications , Rectal Fistula/surgery , Surgical Procedures, Operative , Vesicovaginal Fistula/surgery , Conservative Treatment , Drainage , Female , Germany , Humans , Male , Rectal Fistula/etiology , Vesicovaginal Fistula/etiology
13.
Urologe A ; 59(4): 432-441, 2020 Apr.
Article in German | MEDLINE | ID: mdl-32270241

ABSTRACT

Vesicovaginal fistulas (VVF) represent a detrimental condition causing psychological, physical and social strain on patients. In developed countries they are predominantly the result of pelvic surgery or radiation therapy, whilst obstetric VVF are common in developing countries due to prolonged and complicated births. The majority of VVF require surgical therapy, thus a comprehensive diagnostic workup is needed. Depending on diagnostic characteristics fistula repair can be performed by a transvaginal, transabdominal or minimally invasive approach. Timing of surgery, appropriate interposition of vascularized grafts, optimized postoperative management and surgical expertise are determining factors for successful treatment. This review describes the diagnostic workup and therapeutic management of VVF including various surgical techniques.


Subject(s)
Plastic Surgery Procedures/methods , Urogenital Surgical Procedures/methods , Urologic Surgical Procedures/methods , Vesicovaginal Fistula/diagnosis , Vesicovaginal Fistula/surgery , Female , Humans , Hysterectomy , Surgical Flaps , Vesicovaginal Fistula/etiology
14.
Urologe A ; 58(4): 418-423, 2019 Apr.
Article in German | MEDLINE | ID: mdl-30374517

ABSTRACT

BACKGROUND: Conventional radiographic imaging may fail to safely distinguish clinical stage I from stage IIA germ cell cancer, to localize isolated tumor marker relapses, and to equivocally identify the viability of postchemotherapy residual masses. OBJECTIVES: To provide an overview of the diagnostic value and limitations of functional imaging by positron emission tomography with 2­deoxy-2-[fluorine-18]fluoro-D-glucose with computed tomography (18F-FDG-PET-CT) in male germ cell cancer. MATERIALS AND METHODS: A narrative review based on a literature search of PubMed/MEDLINE for original articles published from 1990-2018 and conference proceedings of ASCO (American Society of Clinical Oncology) and EAU (European Association of Urology) annual meetings 2014-2017 is presented. RESULTS: 18F-FDG-PET-CT does not improve diagnostic accuracy compared to conventional CT imaging clinical stage (CS) I disease. Particularly PET-negativity of postchemotherapy residual masses of seminomas >3 cm in size guide decision-making against further additional treatment. Even PET-positive residues must not result in relapse. For nonseminoma, the value of PET imaging is reduced by potential mature teratoma components, which are commonly PET negative. CONCLUSIONS: Current guidelines recommend 18F-FDG-PET-CT 6-8 weeks postchemotherapy for viability assessment of seminoma residues >3 cm in size. Exceptional circumstances, in which 18F-FDG-PET-CT may be helpful, include: (1) detection of active disease in CS IS, (2) viability assessment of residual masses >1 cm where complete secondary resection is impossible, (3) staging at marker relapse with unconspicuous conventional CT scan, (4) early response assessment during chemotherapy.


Subject(s)
Neoplasms, Germ Cell and Embryonal , Positron Emission Tomography Computed Tomography , Testicular Neoplasms , Fluorodeoxyglucose F18 , Humans , Male , Neoplasm Recurrence, Local , Neoplasms, Germ Cell and Embryonal/diagnostic imaging , Positron-Emission Tomography , Radiopharmaceuticals , Sensitivity and Specificity , Testicular Neoplasms/diagnostic imaging
15.
J Urol ; 179(4): 1539-43, 2008 Apr.
Article in English | MEDLINE | ID: mdl-18295266

ABSTRACT

PURPOSE: We sought to identify causative nongenetic and genetic risk factors for the bladder exstrophy-epispadias complex. MATERIALS AND METHODS: A total of 237 families with the bladder exstrophy-epispadias complex were invited to participate in the study, and information was obtained from 214 families, mainly from European countries. RESULTS: Two families showed familial occurrence. Male predominance was found among all subgroups comprising epispadias, classic bladder exstrophy and cloacal exstrophy, with male-to-female ratios of 1.4:1, 2.8:1 and 2.0:1, respectively (p = 0.001). No association with parental age, maternal reproductive history or periconceptional maternal exposure to alcohol, drugs, chemical noxae, radiation or infections was found. However, periconceptional maternal exposure to smoking was significantly more common in patients with cloacal exstrophy than in the combined group of patients with epispadias/classic bladder exstrophy (p = 0.009). Only 16.8% of mothers followed the current recommendations of periconceptional folic acid supplementation, and 17.6% had started supplementation before 10 weeks of gestation. Interestingly, in the latter group mothers of patients with cloacal exstrophy were more compliant with folic acid supplementation than were mothers of the combined group of patients with epispadias/classic bladder exstrophy (p = 0.037). Furthermore, mothers of children with cloacal exstrophy knew significantly more often prenatally that their child would have a congenital malformation than did mothers of children with epispadias/classic bladder exstrophy (p <0.0001). CONCLUSIONS: Our study corroborates the hypothesis that epispadias, classic bladder exstrophy and cloacal exstrophy are causally related, representing a spectrum of the same developmental defect, with a small risk of recurrence within families. Embryonic exposure to maternal smoking appears to enforce the severity, whereas periconceptional folic acid supplementation does not seem to alleviate it. There is a disproportional prenatal ultrasound detection rate between severe and mild phenotypes, possibly due to the neglect of imaging of full bladders with a focus on neural tube defects.


Subject(s)
Bladder Exstrophy/epidemiology , Epispadias/epidemiology , Adult , Bladder Exstrophy/etiology , Bladder Exstrophy/genetics , Epispadias/etiology , Epispadias/genetics , Europe/epidemiology , Female , Genetic Predisposition to Disease , Humans , Infant, Newborn , Male , Risk Factors , Syndrome
16.
Urol Oncol ; 36(7): 347-348, 2018 07.
Article in English | MEDLINE | ID: mdl-29880457

ABSTRACT

OBJECTIVES: To investigate for the presence of circulating tumor cells (CTC) in patients with variant urothelial carcinoma of the bladder (UCB) histology treated with radical cystectomy (RC), and to determine their impact on oncological outcomes. PATIENTS AND METHODS: We, prospectively, collected data of 188 patients with UCB treated with RC without neoadjuvant chemotherapy. Pathological specimens were meticulously reviewed for pure and variant UCB histology. Preoperatively collected blood samples (7.5ml) were analyzed for CTC using the CellSearch system (Janssen, Raritan, NJ). RESULTS: Variant UCB histology was found in 47 patients (25.0%), most frequently of squamous cell differentiation (16.5%). CTC were present in 30 patients (21.3%) and 12 patients (25.5%) with pure and variant UCB histology, respectively. At a median follow-up of 25 months, the presence of CTC and nonsquamous cell differentiation were associated with reduced recurrence-free survival (RFS) and cancer-specific survival (pairwise P ≤ 0.016). Patients without CTC had better RFS, independent of UCB histology, than patients with CTC with any UCB histology (pairwise P<0.05). In multivariable analyses, the presence of CTC, but not variant UCB histology, was an independent predictor for disease recurrence (hazard ratio = 3.45, P<0.001) and cancer-specific mortality (hazard ratio = 2.62, P = 0.002). CONCLUSION: CTC are detectable in about a quarter of patients with pure or variant UCB histology before RC, and represent an independent predictor for outcomes, when adjusting for histological subtype. In addition, our prospective data confirm the unfavorable influence of nonsquamous cell-differentiated UCB on outcomes.


Subject(s)
Cystectomy , Neoplastic Cells, Circulating , Carcinoma, Transitional Cell/surgery , Humans , Neoplasm Recurrence, Local , Prospective Studies , Retrospective Studies , Treatment Outcome , Urinary Bladder Neoplasms/surgery
17.
Transl Psychiatry ; 8(1): 236, 2018 10 29.
Article in English | MEDLINE | ID: mdl-30374018

ABSTRACT

The understanding of mechanisms linking psychological stress to disease risk depend on reliable stress biomarkers. Circulating cell-free DNA (cfDNA) has emerged as a potential biomarker of cellular stress, aging, inflammatory processes, and cell death. Recent studies indicated that psychosocial stress and physical exercise might also influence its release. We compared the effects of acute psychosocial and physical exercise stress on cfDNA release by exposing 20 young, healthy men to both an acute psychosocial laboratory stressor and an acute physical exercise stressor. Venous blood and saliva samples were collected before and after stress exposure. Cell-free DNA was extracted from plasma and quantified by qPCR. Furthermore, cfDNA fragment length was analyzed and cfDNA methylation patterns were assayed across time. In addition, release of stress hormones and subjective stress responses were measured. Results showed a twofold increase of cfDNA after TSST and fivefold increase after exhaustive treadmill exercise, with an overabundance of shorter cfDNA fragments after physical exhaustion. Interestingly, cell-free mitochondrial DNA showed similar increase after both stress paradigms. Furthermore, cfDNA methylation signatures-used here as a marker for diverse cellular origin-were significantly different post stress tests. While DNA methylation decreased immediately after psychosocial stress, it increased after physical stress, suggesting different cellular sources of active DNA release. In summary, our results suggest stimulus and cell-specific regulation of cfDNA release. Whereas the functional role of stress-associated cfDNA release remains elusive, it might serve as a valuable biomarker in molecular stress research as a part of the psychophysiological stress response.


Subject(s)
Cell-Free Nucleic Acids/blood , DNA Methylation/physiology , DNA, Mitochondrial/blood , Exercise/physiology , Stress, Physiological/physiology , Stress, Psychological/metabolism , Adolescent , Adult , Humans , Male , Stress, Psychological/blood , Young Adult
18.
Urologe A ; 46(12): 1670-5, 2007 Dec.
Article in German | MEDLINE | ID: mdl-18004539

ABSTRACT

The complication rate of hypospadias repair still ranges between 20 and 30%, although operative skills and technical devices have improved. Different aspects like dressing are important for prevention of complications. Early complications are bleeding, hematoma, and infection. Late complications are fistulas, meatal stenosis, partial and complete breakdown, persisting curvature, a hairy urethra, and hypospadias cripples. Detailed preoperative diagnostics are important. There are several operative techniques that can be used for repair including the use of mesh graft or foreign material. Two or multiple stages are often needed. The surgery to correct complications after hypospadias repair is a challenge, which should only be done by an experienced surgeon.


Subject(s)
Hypospadias/surgery , Postoperative Complications/surgery , Child , Child, Preschool , Humans , Infant , Male , Penile Induration/surgery , Reoperation , Surgical Flaps , Surgical Mesh , Suture Techniques , Urethral Stricture/surgery
19.
Urologe A ; 46(12): 1620-42, 2007 Dec.
Article in German | MEDLINE | ID: mdl-17912495

ABSTRACT

Since the 1980s the management of children and adolescents with meningomyelocele has undergone major changes. The introduction of pharmacotherapy with antimuscarinic agents, clean intermittent catheterization (CIC) and antibacterial prophylaxis has revolutionized the management of children with neurogenic bladder. The co-operation between neonatologists, neurosurgeons, paediatric neurologists, paediatricians, paediatric urologists, paediatric nephrologists, paediatric orthopaedists and paediatric surgeons is necessary to achieve an optimized therapy in each individual patient. In this interdisciplinary consensus paper we provide definitions and classifications as well as a timetable for the appropriate investigations. The conservative and surgical options are explained in detail. A short review is given concerning orthopaedic management, incidence of latex allergy, options for bowel management, diagnosis and treatment of urinary tract infections, problems with sexuality and fertility as well as the long-term compliance of these patients and their relatives.


Subject(s)
Meningomyelocele/diagnosis , Urinary Bladder, Neurogenic/diagnosis , Urologic Diseases/diagnosis , Adolescent , Adrenergic alpha-Antagonists/therapeutic use , Antibiotic Prophylaxis , Child , Child, Preschool , Combined Modality Therapy , Cooperative Behavior , Humans , Infant , Infant, Newborn , Mass Screening , Meningomyelocele/therapy , Muscarinic Antagonists/therapeutic use , Neural Tube Defects/diagnosis , Neural Tube Defects/therapy , Patient Care Team , Urinary Bladder, Neurogenic/therapy , Urinary Bladder, Overactive/diagnosis , Urinary Bladder, Overactive/therapy , Urinary Catheterization , Urinary Diversion , Urinary Tract Infections/diagnosis , Urinary Tract Infections/therapy , Urodynamics/physiology , Urologic Diseases/therapy , Vesico-Ureteral Reflux/diagnosis , Vesico-Ureteral Reflux/therapy
20.
Aktuelle Urol ; 38(2): 152-3, 2007 Mar.
Article in German | MEDLINE | ID: mdl-17390279

ABSTRACT

A 4.5-cm elastic, non-dolent mass in the left spermatic cord was diagnosed in a 57-year-old man and totally excised by a scrotal access. Histologically a cellular angiofibroma was diagnosed. These benign tumours are very rare. In women the most common sites are the vulvovaginal, in men the inguinoscrotal region.


Subject(s)
Angiofibroma , Genital Neoplasms, Male , Spermatic Cord , Angiofibroma/diagnosis , Angiofibroma/diagnostic imaging , Angiofibroma/pathology , Angiofibroma/surgery , Genital Neoplasms, Male/diagnosis , Genital Neoplasms, Male/diagnostic imaging , Genital Neoplasms, Male/pathology , Genital Neoplasms, Male/surgery , Humans , Male , Middle Aged , Palpation , Spermatic Cord/pathology , Ultrasonography
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