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Featured researches published by Vahudin Zugor.


Pediatric Reports | 2012

The Prune Belly syndrome: urological aspects and long-term outcomes of a rare disease

Vahudin Zugor; Günter E. Schott; Apostolos P. Labanaris

Prune-Belly syndrome is a disorder characterized by the following triad of symptoms: deficiency of the abdominal muscles, malformations of the urinary tract and bilateral cryptorchidism. This study included a total of 16 patients. The findings included clinical characteristics, diagnostics, therapy and long-term clinical outcomes. All patients were asked to complete a questionnaire and, in some cases, were given further examination. All patients were diagnosed with congenital aplasia of the abdominal wall and a variety of urogenital malformations. Cryptorchidism was present in 11 patients (68.8%), malformations of the prostate in 3 (18.8%), urethral malformations in 8 (50%) and mega-ureter in 14 patients (87.5%). A mega-bladder was observed in 13 patients (81.3%). Distinctive renal malformations, such as renal dysplasia, in 3 patients (18.8%) and hydronephrosis in 9 patients (56.3%), respectively. Abdominoplasty was performed on 4 patients (25%). Urethral surgery was performed in 10 patients (62.5%). Seven patients (43.8%) required ureter surgery, most of which involved re-implantation of the ureter and, in some cases, additional ureter modeling. Renal surgery was performed on 5 patients. Four patients with non-functioning kidneys with hydronephrosis underwent a nephrectomy and one patient pyeloplasty. We demonstrate that successful treatment is possible even in cases of serious and complex malformations, such as those of the Prune-Belly syndrome. Treatment must be tailored to the individual patient. The severity of the renal dysplasia is the main prognostic factor.


Urologia Internationalis | 2013

Robot-Assisted Radical Prostatectomy in Patients with a Pathologic Prostate Specimen Weight ≥100 Grams versus ≤50 Grams: Surgical, Oncologic and Short-Term Functional Outcomes

Apostolos P. Labanaris; Vahudin Zugor; Jorn H. Witt

Introduction: The objective of this study is to evaluate the surgical, oncological and short-term functional outcomes in patients with a pathologic prostate specimen weight ≥100 g versus patients with a pathologic prostate specimen weight ≤50 g undergoing robot-assisted radical prostatectomy (RARP). Patients and Methods: The records of 4,000 men who underwent RARP from February 2006 to April 2012 were reviewed retrospectively. A total of 185 men had a pathologic prostate specimen weight ≥100 g (group A). A matched pairs analysis was performed using our database to identify men with a pathologic prostate specimen weight ≤50 g but with equivalent clinicopathologic characteristics to serve as the control group (group B). Results: Our results indicated that although the intraoperative results were more than satisfying in patients with large glands, there is a significant increase in blood loss, operative time needed, increased need for bladder neck reconstruction as well as an increase in intraoperative complications. Nevertheless, patients with large glands exhibit less aggressive tumors, less positive surgical margins and a lower incidence of biochemical recurrence. Regarding functional outcomes, patients with larger glands had no difference regarding continence rates when compared to patients with smaller glands but exhibited significantly lower potency rates. Conclusions: Although RARP in patients with a pathologic prostate specimen weight ≥100 g is technically challenging, in experienced hands it can be considered a safe procedure with excellent surgical, oncological and functional outcomes. Nevertheless, this conclusion is limited, in that it is from a single institution with a large case volume and may not be reflective of outcomes at centers with smaller volumes and less experience.


Magnetic Resonance Imaging | 2010

Guided e-MRI prostate biopsy can solve the discordance between Gleason score biopsy and radical prostatectomy pathology.

Apostolos P. Labanaris; Vahudin Zugor; Robert Smiszek; Reinhold Nützel; Reinhard Kühn; Karl Engelhard

INTRODUCTION The aim of this study is to examine if guided prostate biopsies based on abnormalities detected by conventional and functional endorectal magnetic resonance imaging (MRI) yield a more reliable representation of the radical prostatectomy pathology and to identify probable preoperative clinical variables that stratified patients likely to harbor significant upgrading. PATIENTS AND METHODS From April 2004 to April 2009, a review of N=70 patients records diagnosed with prostate cancer by a 3-6 core guided transrectal ultrasound (TRUS) prostate biopsy based on abnormalities detected by conventional and functional endorectal MRI and who subsequently underwent radical prostatectomy and exhibited a significant upgrading was conducted. Additionally, a multivariate analysis with a significant upgrading as the outcome was performed including the following parameters: prostate specific antigen (PSA) level, clinical stage, prostate size and duration from biopsy to radical prostatectomy. RESULTS A significant upgrading was noted in only 8.5% of patients, with 1.4% exhibiting a significant downgrading and the rest 90.1% exhibiting an exact Gleason score match. No preoperative clinical variables that stratified patients likely to harbour significant upgrading were identified. CONCLUSIONS This type of biopsy method seems to solve the discordance between the biopsy Gleason score and radical prostatectomy pathology regardless of known preoperative clinical variables that can affect it.


The Scientific World Journal | 2007

Perirenal hematomas induced by extracorporeal shock wave lithotripsy (ESWL). Therapeutic management.

Apostolos P. Labanaris; Reinhard Kühn; Günter E. Schott; Vahudin Zugor

Extracorporeal shock wave lithotripsy (ESWL) is nowadays accepted as the treatment of choice for the majority of patients with renal or proximal ureteral calculi. Although, a relatively noninvasive modality with low morbidity, minor or major complications can be noted. A relative severe complication for the patient and confusing for the treating physician is the perirenal hematoma. With review the literature and an example of perirenal hematoma induced by ESWL in a patient treated in our department, we describe its therapeutic management.


The Journal of Sexual Medicine | 2010

Sexual Dysfunction after Rectal Surgery: A Retrospective Study of Men without Disease Recurrence

Vahudin Zugor; Ivica Miskovic; Berthold Lausen; Klaus E. Matzel; Werner Hohenberger; Mathias Schreiber; Apostolos P. Labanaris; Winfried Neuhuber; Jorn H. Witt; Günter E. Schott

INTRODUCTION Sexual dysfunction is a frequent complication of visceral surgery after rectal resections as a result of carcinoma of the rectum. AIM The purpose of our study is to assess the incidence and form of sexual dysfunction in our own population of patients. METHODS The study comprised all patients who had undergone surgery for carcinoma of the rectum at the Erlangen Surgery University Hospital, Germany, in the period 2000-04. All male patients were retrospectively surveyed and asked to complete standardized (International Index of Erectile Function 15) questionnaires regarding their pre- and postsurgical sexual function. One hundred and forty-five questionnaires could be analyzed. The statistical evaluation was conducted with aid of the SPSS statistics program. The univariate analysis was carried out with the chi-square test and the U-test (Mann-Whitney Test). MAIN OUTCOME MEASURES Erectile dysfunction, libido, and ability to have and sustain ejaculation and orgasm (both before and after surgery in each case) were among the dependent variables when compiling the data. The impact various surgical procedures and radiochemotherapy had on the severity of the sexual dysfunctions was analyzed. The scope of the postoperative urological care given was also assessed. RESULTS Erectile dysfunction was confirmed in N=112 patients (77.3%) after surgery (P-value<0.001). Other parameters such as orgasm capacity (4.1% vs. 16.5%), ejaculation ability (1.4% vs. 12.4%) and libido (3.4% vs. 22%) also showed a marked deterioration postoperatively. Postoperative erectile dysfunction was present in 77% of the patients with a colostomy and in 88.5% of the patients who had received neoadjuvant radiation. CONCLUSIONS Male erectile dysfunction is a frequent complication after rectal resection as a result of carcinoma of the rectum. The high incidence of sexual dysfunctions results from the radical nature of the procedure and from additional radiation or colostomy therapy. These patients need accompanying urological care for treatment of their sexual dysfunction.


Urologia Internationalis | 2014

Robot-Assisted Radical Prostatectomy for the Treatment of Radiation-Resistant Prostate Cancer: Surgical, Oncological and Short-Term Functional Outcomes

Vahudin Zugor; Apostolos P. Labanaris; Daniel Porres; Axel Heidenreich; Jorn H. Witt

Objective: The objective of this study was to assess the surgical, oncological and short-term functional outcomes in patients undergoing salvage robot-assisted radical prostatectomy (SRARP) for the treatment of radiation-resistant prostate cancer. Patients and Methods: The records of 3,500 men who underwent RARP from February 2006 to July 2011 were retrospectively reviewed. All peri- and postoperative data were recorded prospectively in our database. A total of 13 patients (0.37%) who had undergone SRARP for the treatment of radiation-resistant prostate cancer were identified. Results: The primary treatment was external beam radiotherapy in 7 patients (53.8%) and brachytherapy in 6 patients (46.2%). The interval from radiotherapy to biochemical recurrence (BCR) varied from 12 to 108 months (median 48.9). Neurovascular bundle preservation was performed in 3 patients (23.1%). No intraoperative or major complications were encountered. Minor complications were encountered in 4 patients (30.7%). At 12 months, 7 patients were continent (53.8%), 3 exhibited mild incontinence (23.1%) and 3 (23.1%) were incontinent. Regarding potency, none of the patients were potent at 6 months, but 3 patients (23.1%) were potent at 1 year. Regarding BCR, 3 of the patients (23.1%) never reached a prostate-specific antigen nadir of zero, and during the follow-up period only 3 patients (23.1%) exhibited BCR. No disease-specific mortality was evident during follow-up. Conclusions: Although early in its development, it appears that SRARP is technically feasible and offers satisfactory surgical, oncological and short-term functional outcomes.


Urologia Internationalis | 2006

Cowper’s Syringocele – A Rare Malformation of the Male Urethra

Vahudin Zugor; Schrott Km; Günter E. Schott

Cowper’s syringocele is a cystic dilation of the male urethra which should be surgically treated when symptomatic. Two cases of syringocele, 1 adult and 1 juvenile, with obstructive micturition and microhematuria are reported. Both patients were treated using the transurethral surgical technique. The results are discussed with reference to the relevant literature.


Pediatrics and Neonatology | 2009

Retroperitoneal Ganglioneuroma in Childhood—A Presentation of Two Cases

Vahudin Zugor; Günter E. Schott; Reinhard Kühn; Apostolos P. Labanaris

Ganglioneuromas are considered to be part of the neuroblastoma series of tumors, which evolve from the sympathogonia of neural crest origin. As imaging techniques have become more widely practiced, the number of ganglioneuromas detected incidentally has increased. Preoperative diagnosis of retroperitoneal ganglioneuromas is often difficult and the diagnosis is usually based on histopathological findings after surgical excision of the tumor. We present two cases of this unique disease entity and discuss its clinical presentation, therapeutic approach, and clinical outcome.


The Scientific World Journal | 2008

Dry Gangrene of the Penis Induced by a Bullring for Sexual Stimulation Purposes

Apostolos P. Labanaris; Vahudin Zugor; Robert Smiszek; Reinhold Nützel; Reinhard Kühn

Dry gangrene of the penis is a critical clinical condition provoked by vascular compromise that can lead to severe complications. Although usually caused by diabetes mellitus or due to end-stage renal disease, in these last years, there has been an increase of penile gangrene incidents induced by penile strangulation due to constricting devices for sexual stimulation purposes. We present such a case and discuss the correct approach for treatment of this unusual condition.


Scandinavian Journal of Urology and Nephrology | 2008

Inferior vena cava involvement in renal cell carcinoma: comparison of survival rates between patients with thrombus and infiltration.

Vahudin Zugor; Apostolos P. Labanaris; Lausen Berthold; Günter E. Schott

Objective. In 4–10% of cases of renal cell carcinoma (RCC), involvement of the inferior vena cava (IVC) is present. IVC involvement may be due to either a pure thrombus or tumor extension. This study indicates that there is no significant difference in survival rates between patients with thrombus and those with infiltration of the IVC. Material and methods. The records of 84 patients who presented to our institution with RCC and IVC involvement and received surgical treatment between July 1973 and June 2006 were examined. The postoperative observation period was 120 months. Statistical analysis was performed using the Kaplan–Meier method and the log-rank test. Results. Sixty-one patients demonstrated thrombus involvement of the IVC, while the remaining 23 exhibited infiltration. Over the observation period, an average survival time of 64.0 months was observed. The median survival time was 35.2 months. No significant difference in survival rates was observed between patients with thrombus and those with malignant infiltration of the IVC. Conclusions. It is stated in the contemporary literature that IVC infiltration is an important prognostic factor in cases of RCC. This study indicates that there is no significant difference in survival rates between patients with thrombus and those with infiltration of the IVC. Lymph node metastases and undifferentiated RCC remain the only important prognostic factors that have a significant influence on the general survival of a patient.

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Apostolos P. Labanaris

University of Erlangen-Nuremberg

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Reinhard Kühn

University of Erlangen-Nuremberg

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Günter E. Schott

University of Erlangen-Nuremberg

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Schott Ge

University of Erlangen-Nuremberg

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Reinhold Nützel

University of Erlangen-Nuremberg

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Schrott Km

University of Erlangen-Nuremberg

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D. Krot

University of Erlangen-Nuremberg

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