Publications by authors named "Dirk Michielsen"

Background: J stents are commonly used to support the continuity of the urinary tract. Although intravascular, and more specific intracardiac, migrations have been described, they remain infrequent and unrecognized.

Case Report: We report the case of a 57-year-old Caucasian woman with an intracardial migration of a single-J stent after pelvic exenteration.

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Introduction: 36.9% of men worldwide use tobacco. Previous studies suggest a negative effect of cigarette smoking on semen quality, but the results are contradictory.

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Article Synopsis
  • Von Hippel-Lindau (VHL) disease is a hereditary condition that leads to various tumors, prompting patients to undergo extensive annual MRI screenings, which can be expensive and time-consuming due to multiple Gadolinium injections.
  • A new 35-minute whole body MRI protocol was developed to efficiently detect VHL lesions while minimizing Gadolinium use, using a 1.5 Tesla scanner for better imaging speed and quality.
  • Results showed successful identification of lesions in 18 patients, leading to surgical interventions for significant tumors and effective imaging compared to traditional MRI methods.
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Background: Patients with hereditary tumor syndromes undergo periodical magnetic resonance imaging (MRI) screening with Gadolinium contrast. Gadolinium accumulation has recently been described in the central nervous system after repeated administrations. The prevalence and rate of accumulation in different subgroups of patients are unknown.

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Introduction: Encrustation of urinary biomaterials is common; however, the incidence of surface deposition on the Vesair intravesical pressure-attenuation balloon has not been previously reported. The purpose of this analysis is to determine the incidence and potential risk factors for encrustation of the Vesair intravesical balloon.

Methods: The SOLECT trial is a prospective randomized controlled trial conducted at several European centers to evaluate the safety and efficacy of the Vesair balloon for the treatment of female stress urinary incontinence (SUI).

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Background: Segmental testicular infarction is a very rare condition, which can mimic a testicular torsion or testicular cancer. Correct diagnosis is difficult but it is important to avoid unnecessary radical treatment.

Case Presentation: We report a clinical case of a 36-year-old white man who presented at our emergency department with subacute testicular pain.

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Objective: Owing to evolution in treatment, the average life expectancy of patients with cystic fibrosis (CF) has increased. This has been followed by an increase in urological complications such as urinary incontinence. As stress incontinence occurs during exercise, it may have a negative effect on the implementation of respiratory physiotherapy.

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Introduction: Emphysematous cystitis is a very rare complicated urinary tract infection characterized by air in the bladder wall.

Case Presentation: We report two clinical cases of emphysematous cystitis of an 83-year-old Caucasian woman with diabetes mellitus and a 78-year-old Caucasian man with no past medical history. They presented with severe confusion and abdominal distension.

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Introduction: The aim of this study was to examine the knowledge of Belgian university students about the human papillomavirus (HPV) and HPV-vaccination.

Material And Methods: During a period of two months we administered an online questionnaire, which contained 29 questions, to 3332 students of the Free University of Brussels. Of the 433 completed questionnaires, 346 were included by age (18-30 years) and completeness of responded questionnaires.

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Aims: Evaluate the efficacy, safety, and tolerability of a novel pressure-attenuation balloon for the treatment of female stress urinary incontinence (SUI) using a prospective, randomized, single-blind, multi-center design, evaluated at 3 months.

Methods: Sixty-three females with SUI were randomized 2:1 to treatment with a balloon (N = 41) or sham procedure (N = 22). The sham (control) entailed the same procedure without the deployment of a balloon.

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Introduction: The 1-, 3- and 6- month biodegradable polymer matrix depot formulations of leuprorelin acetate (Eligard(®)/Depo-Eligard(®), Astellas Pharma Inc/BV) were shown to reduce testosterone and prostate-specific antigen levels and to be well tolerated in patients with advanced prostate cancer in several clinical trials. This study aimed at evaluating the efficacy, safety and tolerability of the 1- and 3-month leuprorelin acetate depot formulations in daily clinical practice.

Material And Methods: A prospective, open-label, non-interventional, phase IV study (MANTA) was conducted in 243 Belgian prostate cancer patients who had been prescribed the 1-month (7.

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Background And Purpose: A previous study in our department demonstrated the negative impact on freedom from biochemical failure (FFBF) of using too narrow planning target volume (PTV) margins during prostate image-guided radiotherapy (IGRT). Here, we investigated the impact of appropriate PTV margins and rectal distention on FFBF.

Methods And Materials: A total of 50 T1-T3N0M0 prostate cancer patients were treated with daily IGRT by implanted markers.

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Objective: To evaluate Prostate HistoScanning as a screening tool for prostate cancer in a pilot study.

Methods: During a 6-month period, 94 men with normal or suspicious digital rectal examination, normal or elevated prostate-specific antigen, or an increased prostate-specific antigen velocity were examined with Prostate HistoScanning. Based on these parameters and HistoScanning analysis, 41 men were referred for prostate biopsy under computer-aided ultrasonographic guidance.

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Introduction: The aim of study is comparing the haemostatic properties of conventional monopolar resection (TURP) and bipolar transurethral resection in saline (TURIS) of the prostate in patients under chronic oral anticoagulants.

Material And Methods: Out of a cohort group of 550 endoscopic resections for bladder outlet obstruction, 176 patients on chronic oral anticoagulant therapy required endoscopic resection either by monopolar TURP or bipolar TURIS technology. Changes in haemoglobin, blood transfusion, and clot retention were compared between both groups.

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Objectives: Managing urge-incontinence after metastatic lobular carcinoma of the breast into the bladder.

Material And Methods: Case report and review of the pertinent English language literature.

Results: Conservative management with tamoxifen resulted in clinical and partial radiological remission and the urge-incontinence disappeared.

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Introduction: Prostate cancer is a frequently diagnosed male cancer. In men presenting locally advanced or metastatic disease, the mainstay of treatment is hormonal suppression. Despite the castrate levels of testosterone, with time, prostate cancer gradually evolves into a castration-refractory state.

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Introduction: The management of bladder rupture depends on its anatomical location.

Material And Methods: Case report and review of the pertinent English language literature.

Results: A 56-year-old man with history of an anterior rectum resection with partial cystectomy presented with signs of acute renal failure, and later with a tender, distended abdomen.

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Introduction: The aim was to evaluate the postoperative morbidity and outcome of palliative endoscopic resections for relief of infravesical obstruction in prostate cancer patients with hormone deprivation therapy, and to investigate the added value of bipolar technology over conventional monopolar resections.

Material And Methods: A retrospective study was performed on 70 patients with prostate cancer under hormone deprivation therapy undergoing 75 endoscopic procedures, by either monopolar or bipolar technology, between August 2005 and March 2009 at a single institution. The analysis used outpatient, inpatient, and operative records, and observations of electrolyte changes in the serum, postoperative morbidity, and the overall results of palliative endoscopic resections.

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We review the etiology and the management strategy of genital burns. The incidence of genital burns ranges from 2.8 to 13%.

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The objective of this study was to compare the efficacy and safety of bipolar transurethral resection in saline (TURIS) and conventional monopolar transurethral resection (TURP) in men with voiding difficulties due to high volume (>60g) benign prostatic hyperplasia. Between May 2005 and January 2009, 66 men with bladder outlet obstruction due to large benign hyperplasia (BPH) (>60 g) underwent transurethral resection, either by Olympus monopolar or Olympus bipolar TURIS technique. Perioperative and outcome data were recorded and compared.

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Purpose: To compare the incidence of urethral strictures after monopolar transurethral resection of the prostate (TURP) and bipolar transurethral resection in saline (TURIS) for symptomatic benign prostatic hyperplasia.

Patients And Methods: Between January 2005 and January 2009, 518 patients with symptomatic benign prostate hyperplasia underwent either monopolar or bipolar resection. In a randomized trial, the incidence of urethral strictures after both treatment modalities was analyzed.

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Objective: To compare serum sodium changes and the incidence of transurethral resection (TUR) syndrome after monopolar transurethral resection of the prostate (TURP) and bipolar transurethral resection in saline (TURIS) for symptomatic benign prostatic hyperplasia.

Material And Methods: Between January 2005 and August 2009, 550 consecutive patients with symptomatic benign prostate hyperplasia underwent TURP, by either a monopolar or bipolar technique. Preoperative and postoperative blood parameters were analysed to compare preoperative and postoperative electrolyte concentrations.

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A systematic Medline/PubMed and Cochrane Library review of the literature was carried out with regard to technique, effectiveness, safety and complications of male sterilisation. Vasectomy is an outpatient procedure which can be performed under local anaesthesia. The vas deferens is accessed by means of either a conventional incision with a scalpel or by using the 'no-scalpel technique'.

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Objective: To determine the extent to which computer-aided ultrasonography of the prostate (HistoScanning, Advanced Medical Diagnostics, Waterloo, Belgium) can identify tumour foci that correspond to a volume of >or=0.50 mL.

Patients And Methods: Between September 2004 and February 2006, 29 men were HistoScanned before scheduled radical prostatectomy.

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