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1.
Urologe A ; 59(9): 1082-1091, 2020 Sep.
Article in German | MEDLINE | ID: mdl-32274545

ABSTRACT

BACKGROUND: Due to the high incidence and demographic development, there is an urgent need for healthcare research data on lower urinary tract symptoms due to benign prostatic hyperplasia (LTUS/BPH). Since 2005 the Governing Body of German Prostate Centers (DVPZ) has been collecting data from 22 prostate centers in order to determine the quality and type of cross-sectoral care in particular for LUTS/BPH patients. OBJECTIVES: Presentation of the DVPZ database in general, as well as an investigation of treatment patterns for medical and instrumental therapies. MATERIALS AND METHODS: The analysis is based on UroCloud data sets from 30 November 2017. In the UroCloud data on diagnostics, therapy and course of disease are recorded in a web-based manner. RESULTS: A total of 29,555 therapies were documented for 18,299 patients (1.6/patient), divided into 48.5% instrumental, 29.2% medical treatment, and 18.0% "wait and see" (in 4.3% no assignment was possible). Patients treated with an instrumental therapy were oldest (median: 72 years, interquartile range: 66-77), had the largest prostate volumes (50 ml, 35-75 ml), and were mostly bothered by symptoms (International Prostate Symptom Score = 19/4). The majority of patients under medical treatment received alphablockers (56%); phytotherapeutics were used least frequently (3%). Instrumental therapies are dominated by transurethral resection (TUR) of the prostate (60.0%), open prostatectomy (9.4%) and laser therapy (5.0%), with laser therapy having the shortest hospital stay (5 days) and the lowest transfusion and re-intervention rates (1.0% and 4.6%, respectively). CONCLUSIONS: The DVPZ certificate covers the complete spectrum of cross-sectoral care for LUTS/BPH patients and documents the use of the various therapies as well as their application and effectiveness in the daily routine setting.


Subject(s)
Adrenergic alpha-Antagonists/therapeutic use , Laser Therapy , Lower Urinary Tract Symptoms/therapy , Prostatic Hyperplasia/complications , Transurethral Resection of Prostate , Aged , Combined Modality Therapy , Germany , Humans , Incidence , Lower Urinary Tract Symptoms/etiology , Male , Prostatectomy , Prostatic Hyperplasia/therapy , Treatment Outcome
2.
Urologe A ; 59(6): 700-709, 2020 Jun.
Article in German | MEDLINE | ID: mdl-32020241

ABSTRACT

BACKGROUND: There is to date no convincing literature that has assessed the association between traumatic spinal cord injury (SCI) and the later development of urinary bladder cancer. The aim of this work is to present medical experts as well as the national accident insurance and the social courts decision-making aids based on the latest medical scientific knowledge, for assessment of this causal association. MATERIALS AND METHODS: A study conducted between April 1998 and March 2017 in the BG Trauma Hospital Hamburg forms the basis for the decision-making aids. Urinary bladder cancer was diagnosed in 32 out of 6432 treated outpatient and inpatient SCI patients. Furthermore, relevant published literature was taken into consideration for the decision-making aids. RESULTS: It was found that urinary bladder cancer in SCI patients occurs at a considerably younger age as compared to the general population, more frequently shows muscle invasive carcinoma with a higher grade at first diagnosis and a higher proportion of the more aggressive squamous cell carcinoma than that of the general population. Correspondingly, the survival time is extremely unfavorable. For medical experts a matrix was compiled where the various influencing factors, either for or against the recognition of an association between SCI and urinary bladder cancer, were weighted according to their relevance. CONCLUSION: The results showed that urinary bladder cancer in SCI patients differs considerably from that of able-bodied patients. These differences drastically shorten the survival time. A study on patients with spina bifida, i.e., a congenital spinal cord disorder, corroborates these observations. They indicate histopathological differences that have so far been intangible.


Subject(s)
Carcinoma, Squamous Cell/etiology , Decision Support Techniques , Spinal Cord Injuries/complications , Urinary Bladder Neoplasms/etiology , Urinary Bladder/pathology , Carcinoma, Squamous Cell/pathology , Disease Progression , Humans , Urinary Bladder Neoplasms/pathology
3.
Urologe A ; 54(11): 1546, 1548-54, 2015 Nov.
Article in German | MEDLINE | ID: mdl-26518302

ABSTRACT

BACKGROUND: In prostate centers of the Governing Body of German Prostate Centers (DVPZ, Dachverband der Prostatazentren Deutschlands e.V.) treatment data from 3 university clinics, 21 treatment clinics, 3 private clinics and 330 general practitioners incorporated under 22 certificates are collated, in order to document the quality and type of cross-sectoral and interdisciplinary treatment, in particular of prostate cancer (PCA) patients. METHODS: This analysis is based on the DVPZ UroCloud data sets from 20 July 2015. The UroCloud reflects the web-based chronological disease development and quality parameters. For the descriptive analysis of particular key figures, available complete data sets were selected. RESULTS: Of the centers 22 held a valid certificate and fulfilled all required case numbers and structural prerequisites at the primary certification or recertification. In three cases a reauditing led to requirements before certification. Since 2005 a total of 9650 PCA patients have been pseudonymized and followed up (41,247 follow-up forms, 4.3 forms per patient). In 2014 the median number of newly documented PCA patients was 61 per center (minimum 7 and maximum 295). Radical prostatectomy (RP) dominated with 4491 (56 %) cases followed by primary hormonal therapy (1210 cases, 15 %), irradiation (809, 10 %) and non-interventional therapy, such as active surveillance (AS) or watchful waiting (WW) in 760 cases (10 %). A prostate-specific antigen (PSA) reduction was documented in 50 % of the patients with a preoperative PSA value > 20, in 60 % of pT4 tumors and in 50 % of patients with a tumor Gleason score of 9-10. A positive incision margin (R+) was found in in 15 % of pT2 stages, 41 % of pT3 stages and 85 % of pT4 stages. A secondary intervention was documented in 6.5 % of RP. CONCLUSION: The DVPZ certificate reflects the complete spectrum of treatment of PCA patients. The strength of the certificate lies in the documentation of patient development and a simultaneous collation of quality parameters.


Subject(s)
Oncology Service, Hospital/statistics & numerical data , Oncology Service, Hospital/standards , Prostatic Neoplasms/epidemiology , Prostatic Neoplasms/therapy , Quality Assurance, Health Care/statistics & numerical data , Registries , Adult , Aged , Aged, 80 and over , Germany/epidemiology , Guideline Adherence/statistics & numerical data , Humans , Male , Medical Oncology/standards , Middle Aged , Practice Guidelines as Topic , Quality Assurance, Health Care/standards , Treatment Outcome
4.
Urologe A ; 51(12): 1697-702, 2012 Dec.
Article in German | MEDLINE | ID: mdl-23139025

ABSTRACT

For patients with lower urinary tract symptoms (LUTS), α1-adrenoreceptor inhibitors and 5-alpha reductase inhibitors as well as their combination are considered the gold standard. In addition, anticholinergic agents are being introduced as monotherapy or in combination with α1-adrenocepetor inhibitors for patients with predominant storage disorders. Phosphodiesterase 5 (PDE5) inhibitors are often the best option for patients with LUTS who also suffer from erectile dysfunction. Recently, novel treatment options have been presented and intraprostatic injection of various agents, such as botulinum toxin A, NX-1207 and PRX302 has shown promising initial results. In addition, innovative minimally invasive treatment options, such as UroLift® appear to be efficacious and safe in this patient cohort. Particular emphasis should be laid on patients with LUTS and concomitant sexual disorders.


Subject(s)
5-alpha Reductase Inhibitors/therapeutic use , Adrenergic alpha-1 Receptor Antagonists/therapeutic use , Lower Urinary Tract Symptoms/therapy , Minimally Invasive Surgical Procedures/instrumentation , Phosphodiesterase 5 Inhibitors/therapeutic use , Urologic Surgical Procedures/instrumentation , Humans , Male , Minimally Invasive Surgical Procedures/methods , Prostheses and Implants , Urologic Surgical Procedures/methods
5.
Urologe A ; 51(12): 1735-40, 2012 Dec.
Article in German | MEDLINE | ID: mdl-23076451

ABSTRACT

BACKGROUND: Postradiation hemorrhagic cystitis is a well known long-term complication of radiation therapy occurring in 3-6 % of patients. Hyperbaric oxygen (HBO) has been demonstrated to be an effective treatment for radiation-induced hemorrhagic cystitis not responding to conventional management. This article reviews experiences with HBO for radiogenic cystitis after prostate cancer. METHODS: All patients treated for hemorrhagic cystitis with HBO between 2006 and 2012 were retrospectively reviewed. The HBO procedure was performed for 130 min/day at 1.4 atmospheres overpressure. Patient demographics, type of radiotherapy, onset and severity of hematuria and time between first hemorrhagic episode and beginning of HBO were evaluated. The effect of HBO was defined as complete or partial (lower RTOG/EORTC grade) resolution of hematuria. RESULTS: A total of 10 patients with radiogenic cystitis and a median age of 76 years were treated with a median of 30 HBO treatment sessions. Patients received primary, adjuvant, salvage and high dose rate (HDR) radiotherapy (60-78 Gy). First episodes of hematuria occurred after a median of 41 months following completion of radiotherapy and HBO was performed 11 months after the first episode of hematuria. After a median 35-month follow-up 80% experienced complete resolution, one patient suffered a one-off new hematuria and in one patient a salvage cystectomy was necessary. No adverse effects were documented. CONCLUSIONS: The experiences indicate that HBO is a safe and effective therapy option in treatment-resistant radiogenic cystitis but prospective clinical trials are needed for a better evaluation.


Subject(s)
Cystitis/therapy , Hemorrhage/therapy , Hyperbaric Oxygenation/methods , Prostatic Neoplasms/radiotherapy , Radiation Injuries/therapy , Radiotherapy, Conformal/adverse effects , Aged , Aged, 80 and over , Cystitis/etiology , Hemorrhage/etiology , Humans , Male , Middle Aged , Prostatic Neoplasms/complications , Radiation Injuries/etiology , Treatment Outcome
6.
Urologe A ; 49(8): 916-21, 2010 Aug.
Article in German | MEDLINE | ID: mdl-20652675

ABSTRACT

Five years after introduction of the standards for certification of prostate centers of the DVPZ (Dachverband der Prostatazentren Deutschlands e.V., Umbrella Organization of Prostate Centers in Germany), 40 facilities are seeking to obtain certification and 18 have already achieved certification. One center (Leverkusen) has meanwhile been recertified. Accomplishing certification appears to be protracted in parts, mainly due to the required training and involvement of outpatient services. Most of the difficulties encountered in implementing the contents of the certificate were noted in rendering documentation when dealing with health care data from the outpatient sector. The strengths of the DVPZ certificate include the consistent involvement of the outpatient services, continuing education of the cooperating partners, and the provision of the necessary components for establishing a center. There are considerable potentials for improvement regarding the expected and actual implementation of the standards. Efforts to increase quality are not as yet reimbursed by the cost bearers and a joint course of action on the part of the DVPL and the DKG (Deutsche Krebsgesellschaft, German Cancer Society) seems to be needed.


Subject(s)
Certification/standards , Medical Oncology/standards , Practice Guidelines as Topic , Prostatic Neoplasms/diagnosis , Prostatic Neoplasms/therapy , Quality Assurance, Health Care/standards , Urology/standards , Humans , Male
7.
Urologe A ; 47(9): 1112, 1114-6, 2008 Sep.
Article in German | MEDLINE | ID: mdl-18648762

ABSTRACT

According to section sign 202 of the German Social Security Code VII, individuals diagnosed with bladder cancer or renal cell cancer who had been occupationally exposed to carcinogens known to induce cancer in these human tissues must be reported to the statutory accident insurance. In this paper, the course of the administrative procedure, particularly considering the reporting procedure and screening for occupational risk factors by a CD-based tool, developed by the authors, is described.


Subject(s)
Carcinogens/toxicity , Carcinoma, Renal Cell/chemically induced , Expert Testimony/legislation & jurisprudence , Kidney Neoplasms/chemically induced , Occupational Diseases/chemically induced , Occupational Exposure/adverse effects , Urinary Bladder Neoplasms/chemically induced , Workers' Compensation/legislation & jurisprudence , Carcinoma, Renal Cell/diagnosis , Germany , Humans , Kidney Neoplasms/diagnosis , National Health Programs/legislation & jurisprudence , Occupational Diseases/diagnosis , Risk Factors , Urinary Bladder Neoplasms/diagnosis
8.
World J Urol ; 26(3): 251-6, 2008 Jun.
Article in English | MEDLINE | ID: mdl-18421461

ABSTRACT

INTRODUCTION: Follow-up after cancer treatment has been focussing on the detection of local recurrence or metastatic disease of the primary cancer. Subsequent independent malignancies arising during follow-up have not been considered as relevant. Our study evaluated the risk of independent cancers following the diagnosis of primary urological cancer. MATERIALS AND METHODS: From 1990 to 1998 data from 4,119 patients with a minimum follow-up of 5 years were collected. A total of 1,835 patients had primary prostate cancer, 1,269 and 1,015 patients had primary bladder and renal cell cancer, respectively. The most common subsequent malignancies in males were prostate cancer followed by lung and colon cancer. Breast and colon cancer were the most frequently detected subsequent cancers in females. The age correlated comparison of diagnosed and expected cancer in men with primary prostate cancer revealed an increase in relative risk for bladder, kidney and rectal cancer of 3.75, 2.03 and 1.32-fold, respectively. In men with primary bladder cancer the relation for prostate, kidney and lung cancer was 4.05, 2.51 and 2.13-fold, respectively; for females the relation for kidney cancer was 4.55-fold. In men with primary kidney cancer subsequent rectal, prostate and bladder cancer showed a 4.38, 2.91 and 2.48-fold increase, respectively. CONCLUSION: These data suggest an increase in relative risk for subsequent urologic and non-urologic cancer during follow-up. Clinicians involved in oncological follow-up need to be aware of this finding. To which degree a follow-up scheme, not solely focussing on the primary urological malignancy could improve survival needs to be evaluated in further studies.


Subject(s)
Urologic Neoplasms/therapy , Aged , Combined Modality Therapy/methods , Diagnostic Techniques, Urological , Female , Follow-Up Studies , Germany/epidemiology , Humans , Incidence , Male , Middle Aged , Prognosis , Retrospective Studies , Survival Rate/trends , Time Factors , Urologic Neoplasms/diagnosis , Urologic Neoplasms/epidemiology
10.
J Int Med Res ; 33(3): 337-48, 2005.
Article in English | MEDLINE | ID: mdl-15938595

ABSTRACT

We assessed the safety, efficacy and patient acceptability of vardenafil (Levitra, Bayer HealthCare, Leverkusen, Germany) under real-life conditions in patients with erectile dysfunction (ED) in a multinational post-marketing surveillance study. An initial and up to two follow-up visits were documented for 29 358 German ED patients receiving vardenafil. Patients were interviewed about overall treatment success, and individual sexual attempts were evaluated in a patient questionnaire. Overall erectile improvement was reported by 93.9% of physicians, and similar improvement rates were reported for both 10 mg and 20 mg vardenafil dosages. Most patients experienced improved erections after the first (73.6%) or second (88.5%) tablet. Sexual attempts were successful with respect to partner penetration in 94.9% of patients and with respect to maintenance of erection during intercourse in 87.7% of patients. Adverse drug reactions were very rare (1.3% of patients). Vardenafil was highly effective, reliable and well tolerated in ED patients treated under real-life conditions.


Subject(s)
Erectile Dysfunction/drug therapy , Imidazoles/pharmacology , Piperazines/pharmacology , Aged , Germany , Humans , Imidazoles/adverse effects , International Cooperation , Male , Middle Aged , Penile Erection , Phosphodiesterase Inhibitors/adverse effects , Phosphodiesterase Inhibitors/pharmacology , Piperazines/adverse effects , Prospective Studies , Safety , Sulfones/adverse effects , Sulfones/pharmacology , Surveys and Questionnaires , Time Factors , Treatment Outcome , Triazines/adverse effects , Triazines/pharmacology , Vardenafil Dihydrochloride
11.
Versicherungsmedizin ; 56(4): 187-92, 2004 Dec 01.
Article in German | MEDLINE | ID: mdl-15633772

ABSTRACT

As an alternative to a radical prostatectomy with complications reducing the quality of life because of incontinence of urine and erectile dysfunction, the insertion of radioactive sources into the prostate was established in the USA and evaluated by accompanying studies at the beginning of the eighties. The patient has the advantage of minimal-invasive character, the possibility of outpatient treatment and the lower operative morbidity as well as reduced complications. In the locally limited "low-risk" stage (pT1a - pT2c), the American Society for Urology judges it equieffective as a curative treatment as regards the survival period. Although there are long-term studies with a follow-up of 13 years, in Germany we are not able to give our opinion finally, but it can be assumed to be as equally good. Considering the demographic development, one has to expect an increase in this cancer, which today already has the highest cancer rate in men in Germany. The improved diagnosis will lead to an increase in treatments and younger men will be examined. As a result there will be more curable cases and an improvement or even prolongation of the survival period. The trend seen in the USA indicates a rise in this treatment in Germany as well. After a terminological definition of the expression and a presentation of the brachytherapy-technique, the range of actual therapeutical options of prostate cancer and the variations of brachytherapy are shown and compared as far as their efficiency is concerned. Uncertainties in the evaluation of medical necessity are discussed but also contradictions and diversities in the opinions on the mode of accounting.


Subject(s)
Brachytherapy , Prostatic Neoplasms/radiotherapy , Adult , Aged , Cross-Sectional Studies , Germany , Humans , Male , Middle Aged , Neoplasm Staging , Prostatectomy , Prostatic Neoplasms/mortality , Prostatic Neoplasms/pathology , Radiotherapy Dosage , Survival Rate , Treatment Outcome
12.
Urologe A ; 40(3): 185-90, 2001 May.
Article in German | MEDLINE | ID: mdl-11405126

ABSTRACT

Prostate cancer represents the second most frequent malignant male disease in Germany. In the United States, approximately 35,000 men die from prostate cancer annually. The treatment of this disease is of particular interest to both clinical and investigative urologists. Radical prostatectomy and radiotherapy are established standard modalities in the treatment of organ-confined prostate cancer. As in other fields of urology, minimally invasive procedures have gained increased interest in urologic oncology. With cryoablation of the prostate, a minimally invasive therapy for prostate cancer has been available since 1989 and has been used and under investigation since then. Improvements in cryotechnique and progress in transrectal high-resolution ultrasonography enable the surgeon to achieve the curative target of thermoinduced destruction of the whole prostate gland. Control with thermocouples, ultrasound, and double-freeze techniques makes it possible to destroy the whole organ or the region of interest in high-risk patients or in patients who refuse to undergo open surgical procedures.


Subject(s)
Cryosurgery , Minimally Invasive Surgical Procedures , Prostatic Neoplasms/surgery , Aged , Aged, 80 and over , Follow-Up Studies , Humans , Male , Middle Aged , Neoplasm Staging , Prostate/pathology , Prostate/surgery , Prostatic Neoplasms/pathology
13.
Urol Int ; 66(3): 145-8, 2001.
Article in English | MEDLINE | ID: mdl-11316976

ABSTRACT

INTRODUCTION: The effects of modern mass media and communication on the public health system are well known. So far however, these different influences of the media have not been objectively evaluated by physician-patient contacts. PATIENTS AND METHODS: In this study we asked urologists, primary care physicians and internists in private practices in Cologne and a rural area (Erftkreis, Germany) to quantify their weekly contacts with patients suffering from erectile dysfunction (ED). The poll was conducted by four separately mailed questionnaires whereas a double counting was avoided. Between the second and third mailing, an unbelievable public attention was seen following the FDA approval of Viagra in the United States. When Viagra was available in Germany, a fourth questionnaire was sent (4 months later) to all practitioners (n = 751). RESULTS: During this time span, there was a statistically (p

Subject(s)
Behavior , Erectile Dysfunction/drug therapy , Erectile Dysfunction/psychology , Mass Media , Patients/psychology , Phosphodiesterase Inhibitors/therapeutic use , Piperazines/therapeutic use , Adult , Germany , Humans , Male , Purines , Sildenafil Citrate , Sulfones , Surveys and Questionnaires
14.
Hum Reprod ; 15(12): 2531-5, 2000 Dec.
Article in English | MEDLINE | ID: mdl-11098022

ABSTRACT

Microsurgical epididymal sperm aspiration (MESA) combined with intracytoplasmic sperm injection (ICSI) represents a great advance in the therapy of non-reconstructable obstructive azoospermia. For procedure synchronization, a great number of organizational facilities are needed. Intentional cryopreservation of the aspirate may reduce these problems, therefore the aim of this study was to analyse the amount and quality of aspirate fluid obtained by means of MESA and the quality of the vials after thawing. Furthermore, the available cryopreserved straws were calculated. A total of 93 consecutive MESA procedures were performed and epididymal spermatozoa were obtained in 88 patients. Mean sperm concentration was 40.9 x 10(6) spermatozoa/ml. Global and progressive motility were 24.8 and 7.5% respectively. In one-third of the aspirates, no progressive motile spermatozoa were found. The mean number of straws available was 7.6. In 33 ICSI cycles with frozen-thawed epididymal spermatozoa, a pregnancy rate of 42.4% was achieved. In conclusion, these data show that enough spermatozoa are available for various ICSI cycles following a single MESA procedure in men with non-reconstructable obstructive azoospermia. Furthermore, ICSI with cryopreserved spermatozoa leads to excellent pregnancy rates


Subject(s)
Cryopreservation , Epididymis/cytology , Infertility, Male/surgery , Microsurgery , Oligospermia/surgery , Spermatozoa , Adult , Aged , Embryo Transfer , Female , Humans , Infertility, Male/therapy , Male , Pregnancy , Sperm Count , Sperm Injections, Intracytoplasmic , Sperm Motility , Suction
15.
Urologe A ; 39(2): 154-9, 2000 Mar.
Article in German | MEDLINE | ID: mdl-10768226

ABSTRACT

186 cases of nephrectomy for renal cell cancer are studied retrospectively. The overall 5-year survival rate was 77.2%. According to the 4th edition of the "TNM" classification system of UICC the survival rates of patients with T2-(n = 97), T3a (n = 58) and T3b-tumors (n = 25) were 80.9%, 79.3% and 65.6%, respectively. No patient with a stage T4 tumor (n = 6) survived longer than 20 months. The 5-year survival rate of patients with N1-lymph node metastases was 83.3% (n = 8); without lymph node metastases 78.3% (n = 152), respectively. There was no survival longer than 20 months in case of N2-lymph node metastases (n = 13). According to the grading survival rates of 95.4% (G1, n = 46), 71.2% (G2, n = 130) and 71.4% (G3, n = 8) resulted.


Subject(s)
Carcinoma, Renal Cell/surgery , Kidney Neoplasms/surgery , Nephrectomy/methods , Adult , Aged , Carcinoma, Renal Cell/mortality , Carcinoma, Renal Cell/pathology , Female , Humans , Kidney Neoplasms/mortality , Kidney Neoplasms/pathology , Lymph Node Excision/methods , Lymphatic Metastasis , Male , Middle Aged , Neoplasm Staging , Retrospective Studies , Survival Rate
16.
Andrologia ; 31 Suppl 1: 83-7, 1999.
Article in English | MEDLINE | ID: mdl-10643524

ABSTRACT

The purpose of this study was to analyse long-term results of penile revascularization using Hauri's method in 124 patients with a mean follow-up of 54 months. Of 176 patients undergoing this procedure, 124 were available for detailed analysis. The patients ranged in age from 22 to 71. A total of 25.8% of the patients (32/124) responded to intracavernous injection (ICI). Postoperatively, 74 patients (59.7%) exhibited spontaneous erections. Patients were classified as 'satisfied' or 'dissatisfied'. In those who were satisfied, a high correlation was found (63/74 = 85%) between graft patency, as judged by ultrasound, and erectile function. The benefit for non-responders to ICI (60/92) was higher than for responders (14/32). Only five of 12 diabetics profited from penile revascularization. A serious complication was glans hyperemia in 9/124 cases (7%). Based on this experience, the following indicators are recommended for case selection: (i) non-responder to ICI; (ii) age less than 55 years; (iii) nondiabetic; (iv) cavernous leakage excluded; (v) stenosis in the internal pudendal artery.


Subject(s)
Impotence, Vasculogenic/surgery , Penis/blood supply , Adult , Age Factors , Aged , Arteries/surgery , Arteriovenous Shunt, Surgical , Diabetes Complications , Humans , Male , Middle Aged , Penile Erection , Postoperative Complications , Treatment Outcome
17.
Eur Urol ; 34(3): 181-7, 1998 Sep.
Article in English | MEDLINE | ID: mdl-9732189

ABSTRACT

OBJECTIVES: As the first German center to perform perineal cryoablation of localized prostate cancer, we present our experience in a series of 48 consecutive patients. METHODS: 7 patients staged T1, 21 with T2 disease and 20 patients with T3 tumor were treated. 62.5% of the patients received neoadjuvant hormonal downsizing. Follow-up ranged from 4 to 27 months with a median of 15 +/- 5.7 months. RESULTS: Positive control biopsies after 6 months were obtained in 0% of T1 tumors, 16.7% of T2 tumors and 26.7% of T3 tumors. Prostate-specific antigen persistence above 1 ng/ml was diagnosed in 14.3, 33.3, and 40%, respectively. Complications were acceptable. 22.9% of the patients had prolonged urinary retention, requiring transurethral resection in 5 patients (10.4%) to relieve obstruction. In 5 cases (10.4%) incontinence was found, in 2 of these patients mild urge incontinence declined over time, in 3 cases moderate to severe stress incontinence developed. Two of these patients were pretreated with radiotherapy. No fistulae were noted. CONCLUSIONS: Cryoablation of the prostate is not a substitution for radical prostatectomy but enables the surgeon to perform a radical curative procedure in patients unfit for other radical forms of treatment or unwilling to undergo these. Long-term follow-up and prospective studies are necessary to define the clinical significance of this procedure.


Subject(s)
Biopsy, Needle , Cryosurgery , Prostate-Specific Antigen/blood , Prostate/pathology , Prostatic Neoplasms/surgery , Aged , Androgen Antagonists/therapeutic use , Cryosurgery/adverse effects , Humans , Male , Middle Aged , Neoadjuvant Therapy , Postoperative Complications , Prostatic Neoplasms/pathology
18.
Urol Res ; 26(2): 129-35, 1998.
Article in English | MEDLINE | ID: mdl-9631946

ABSTRACT

Nitric oxide (NO) is an important mediator in the relaxation of cavernosal smooth muscle. The present study examines the existence and location of the constitutive isoform eNOS (endothelial NO synthase) accompanying the already substantiated neurogenic NOS (nNOS) in the human corpus cavernosum of men with and without erectile dysfunction. Activities of NOS enzymes were examined in specimens of 11 potent and nine long-term impotent patients by means of light and electron microscopy using NADPH-diaphorase staining and immunohistochemical eNOS-specific, smooth muscle actin-specific and nNOS-specific markers. Cavernosal smooth muscle shows a distinct expression of eNOS. In contrast to the weaker expression of eNOS and nitrinergic innervation found in larger veins, the small intracavernosal helicine arteries express large quantities of eNOS and possess a dense nitrinergic innervation. Long-term impotent patients display a broad heterogeneity in eNOS expression and nitrinergic innervation while no overall correlation between NOS expression and erectile function was observed. The expression of eNOS indicates eNOS as a main source of NO alongside nNOS. The differentiated localization of eNOS supports at least a role of this isoform in vascular regulation.


Subject(s)
Muscle, Smooth, Vascular/enzymology , Nitric Oxide Synthase/metabolism , Penile Erection/physiology , Penis/enzymology , Erectile Dysfunction/physiopathology , Humans , Immunohistochemistry , In Vitro Techniques , Male , Muscle Relaxation/physiology , Muscle, Smooth, Vascular/physiology , Nitric Oxide Synthase Type I , Nitric Oxide Synthase Type III , Penis/blood supply , Penis/physiology
19.
Urol Int ; 60 Suppl 1: 2-8, 1998.
Article in English | MEDLINE | ID: mdl-9563138

ABSTRACT

Radical prostatovesiculectomy, radiation therapy, and complete androgen deprivation are acknowledged therapeutic concepts in the treatment of organ-confined prostate cancer. With cryoablation of the prostate, minimal invasive therapy has become available since 1991. Improvements in cryotechnique and progress in transrectal high-resolution ultrasound permit thermo-induced damage to the whole gland to be curative. Downstaging of prostate cancer by hormone ablative therapy remains a controversial issue at this time, but the use of androgen ablation decreases the size of the prostate gland which facilitates cryosurgery and improves the results. The freezing equipment has a limited capacity, and in certain instances large gland volumes prevent adequate freezing of the prostate. Since percutaneous prostate cryosurgery leaves dead tissue in situ to be resorbed over time, downsizing reduces the amount of necrotic tissue to be resorbed, reducing the potential for complications, particularly abscesses. The use of androgen ablation also increases the deposition of fat in the area of the Denonvillier's fascia, making freezing of the rectum less likely during the procedure. In our study androgen ablative therapy was completed before performing cryosurgery in 26 of 43 patients (58%). The 17 patients not given androgen ablation therapy had gland volumes < 40 ml, tumor volumes < 3 ml, and no evidence of extracapsular tumor. The neoadjuvant therapy consisted of a 3- to 10-month course of leuprolide acetate combined with an antiandrogen.


Subject(s)
Androgen Antagonists/administration & dosage , Antineoplastic Agents, Hormonal/administration & dosage , Cryosurgery , Prostatic Neoplasms/surgery , Androgen Antagonists/adverse effects , Antineoplastic Agents, Hormonal/adverse effects , Chemotherapy, Adjuvant , Cryosurgery/instrumentation , Cryosurgery/methods , Delayed-Action Preparations , Gonadotropin-Releasing Hormone/analogs & derivatives , Humans , Leuprolide/administration & dosage , Male , Prostatic Neoplasms/drug therapy , Prostatic Neoplasms/pathology
20.
Urol Int ; 61(2): 104-10, 1998.
Article in English | MEDLINE | ID: mdl-9873250

ABSTRACT

Alternative minimally invasive methods treating benign prostate hyperplasia (BPH) have become more and more important. Transurethral needle ablation (TUNATM) has been demonstrated to be effective in both canine and the human prostate. The goal of our study was to prove the safety, feasibility and tolerance of this new procedure. In this prospective nonrandomized study, 33 patients underwent TUNATM-treatment. One, 3 and 6 months postoperatively, follow-up examinations were carried out assessing urodynamic parameters such as urinary flow rates, residual urine levels, and IPSS-scores. During the last visit additional cystomanometry and urethrocystoscopy were done. Six months postoperatively IPSS-score and residual urine volumes were decreased by 50% (range: 1-72%) and 75% (range: 12-97%). Improvement in maximum flow rate was 63% (range: 5-125%). No serious postoperative complications occurred. After a short 'learning period' most of the treatments where performed as an out-patient-procedure so the patients could leave the hospital without the need for indwelling catheters. The TUNATM appears to be a minimally invasive and safe out-patient procedure for the treatment of selected cases of BPH.


Subject(s)
Catheter Ablation/instrumentation , Endoscopy , Prostatic Hyperplasia/surgery , Aged , Cystoscopy , Endoscopes , Follow-Up Studies , Humans , Male , Minimally Invasive Surgical Procedures , Needles , Postoperative Complications , Prospective Studies , Prostatic Hyperplasia/diagnosis , Prostatic Hyperplasia/physiopathology , Safety , Treatment Outcome , Urethra , Urodynamics
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