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Dive into the research topics where Zafer Kozacıoğlu is active.

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Featured researches published by Zafer Kozacıoğlu.


Urology | 2015

Is New Visual Prostate Symptom Score Useful as International Prostate Symptom Score in the Evaluation of Men With Lower Urinary Tract Symptoms? A Prospective Comparison of 2 Symptom Scores in Turkish Society

Yasin Ceylan; Bulent Gunlusoy; Tansu Degirmenci; Zafer Kozacıoğlu; Deniz Bolat; Suleyman Minareci

OBJECTIVE To evaluate the correlation between the visual prostate symptom score (VPSS) and the International Prostate Symptom Score (IPSS) and uroflowmetry parameters in Turkish men with lower urinary tract symptoms. MATERIAL Between September 2013 and March 2014, a total of 191 patients who were admitted to the hospital with lower urinary tract symptoms were enrolled in the study. After the routine tests were performed, the patients were requested to fill the IPSS questionnaire consisting of 8 questions and the VPSS questionnaire consisting of 4 questions. Peak (Qmax) and average (Qave) urinary flow rates were measured. RESULTS Mean age value was 62.8 years (range, 43-84 years). The education level was divided into 3 groups as follows: groups 1, 2, and 3 consisting of 98 patients (51.3%) with formal schooling (1-8 years education), 61 patients (31.9%) with 9-12 years education, and 32 patients (16.8%) with college or university education, respectively. There was a positive correlation between the total IPSS and the total VPSS (r = 0.72; P <.001). There was a negative correlation between the Qmax values and both the total IPSS (r = -0.53; P <.001) and the total VPSS (r = -0.3; P <.01), separately. The questionnaire was completed without any assistance by 25 (25.5%), 33 (54.1%), and 27 (84.4%) men for the IPSS and by 76 (77.6%), 54 (88.5%), and 31 (96.9%) men for the VPSS in groups 1, 2, and 3, respectively. CONCLUSION The VPSS correlates significantly with the IPSS and can be reliably used in the elderly and low-educated patients for the assessment of symptom severity in men with lower urinary tract symptoms.


International Braz J Urol | 2015

Patient and partner outcome of inflatable and semi-rigid penile prosthesis in a single institution

Ibrahim Halil Bozkurt; Burak Arslan; Tarik Yonguc; Zafer Kozacıoğlu; Tansu Degirmenci; Bulent Gunlusoy; Suleyman Minareci

ABSTRACT Introduction: Penile prostheses are subject to a continuous development and have gained better mechanical reliability and safety during the last decades. In this study, we aimed to investigate the outcomes and satisfaction rates of inflatable penile prosthesis (IPP) and semirigid penile prosthesis (SPP) implantation. Materials and Methods: From August 2001 to June 2012, 257 men with erectile dysfunction (ED) underwent penile prosthesis implantation (PPI) at our institution. Of the 257 patients, 118 underwent implantation of IPP and 139 underwent SPP implantation. The pre-operative and post-operative erectile status of the patients were assessed by international index of erectile function (IIEF) questionnaire. The satisfaction of patients and partners were evaluated by a telephone interview using the erectile dysfunction inventory of treatment satisfaction (EDITS) questionnaire and EDITS partner survey. Results: The overall major complication rate was higher in IPP group. PPI led to a significant improvement in IIEF scores in both groups. For IPP and SPP groups the average EDITS scores were 78±11and 57±8, respectively, and that for the partners were 72±10 and 49±7, respectively (p<0.05). Conclusion: Although the IPP implantation have better satisfaction rates, the SPP implantation is still a viable treatment option in the surgical treatment of ED because of low cost and high durability with acceptable satisfaction rates.


Urology | 2017

Cognitive Effects of Androgen Deprivation Therapy in Men With Advanced Prostate Cancer

Bulent Gunlusoy; Yasin Ceylan; Asli Koskderelioglu; Muhtesem Gedizlioglu; Tansu Degirmenci; Pınar Ortan; Zafer Kozacıoğlu

OBJECTIVE To evaluate the prostate cancer effects of androgen deprivation therapy (ADT) by using a systematic set of methods to calculate specific cognitive functions in men with locally advanced or metastatic prostate cancer. MATERIALS AND METHODS From April 2014 to February 2016, a prospective, comparative study was done to evaluate the cognitive effects of hormone therapy. Group 1 consisted of 78 patients with locally advanced or metastatic prostate cancer who received complete ADT treatment continuously for 12 months and group 2 (control group) consisted of 78 patients who underwent radical prostatectomy without any additional treatment. The Montreal Cognitive Assessment (MoCA) test and the Frontal Assessment Battery (FAB) test with Turkish language version were used to evaluate multiple domains of cognitive function. RESULTS Post-treatment results of both tests revealed that patients in group 1 achieved lower mean total scores than group 2. In MoCA test, the deficits were especially prominent in the areas of language ability and short-term memory capacity (P < .05 and P < .05). No significant differences could be identified between groups in respect to attention, executive functions, visuospatial abilities, abstract thinking, calculating abilities, and orientation. In FAB test, the deficits were especially prominent in the areas of mental flexibility and inhibitory control (P < .05 and P < .05). No significant differences could be identified between groups in conceptualization, motor series, conflicting instructions, and environmental autonomy. CONCLUSION ADT affects cognitive functions such as language ability, short-term memory capacity, mental flexibility, and inhibitory control. Urologists should keep in mind these side effects and inform the patients and their families for the early symptoms of cognitive dysfunction.


Rare Tumors | 2015

Small cell carcinoma of the urinary bladder: KIT and PDGFRA gene mutations

Nuket Eliyakin; Hakan Postaci; Yasemin Baskin; Zafer Kozacıoğlu

Primary small cell carcinoma of the urinary bladder is very rare. A 72-year-old was admitted to our hospital because of hematuria and dysuria. Cystoscopy revealed a bladder full of multiple, solid and papillary tumors. Biopsies from the deep and papillary tumors were taken. Histologically, tumor was pure small cell carcinoma. Immunohistochemically, the tumor cells were positive for cytokeratin, chromo-granin, synaptophysin, neuron-specific enolase, CD56, CD117 and Ki67 (labeling 70%). The tumor cells were negative for CK7, CK20, CD3, CD20, LCA, CDX2, uroplakin, thyroid transcription factor 1, PSA and p63. Metastatic workup was performed an no primary or metastatic lung lesions were noted. Due to the clinical, radiologic and immunohistochemical findings, the patient was diagnosed as primary small cell carcinoma of bladder. A molecular genetic analysis for KIT (exons 9, 11, 13 and 17) and PDGFRA (exons 12 and 18) genes was performed, in paraffin micro dissection specimens, by the PCR-direct sequencing method. According to the sequencing analyses, two mutations were found at positions 558 (p.K558N) and 562 (p.E562D) in KIT gene exon 11 in our case. The another hand the same case presented two mutations in PDGFRA gene exon 14 at position 631 (p.P631A) and 638 (p.638Q_639AinsC). The disease process was fulminant and the patient was lost due to several complications prior to any chemotherapy.


Türk Üroloji Dergisi/Turkish Journal of Urology | 2017

An update of Penile Fractures: Long-term significance of the number of hours elapsed till surgical repair on long-term outcomes

Zafer Kozacıoğlu; Yasin Ceylan; Ozgu Aydogdu; Deniz Bolat; Bulent Gunlusoy; Suleyman Minareci

OBJECTIVE We updated our data on penile fractures and investigated the significance of the time interval from the incident of the fracture until the operation on the erectile functions and long-term complications. MATERIAL AND METHODS Between January 2001 and June 2014, 64 patients were operated on with a preoperative diagnosis of penile fracture. We could evaluate 54 of these patients. The patients were classified into 3 groups according to the time interval from the time of fracture until surgery. The validated Turkish version of the erectile components of International Index of Erectile Function (IIEF) was answered by every patient 3 times after the surgery; before the incident of fracture, at first postoperative year, and at the time of the study (IIEF-5 and question #15 were used). The complications were noted and an erectile function index score was calculated for every patient. RESULTS Mean follow up period was 44.9 (±2.8) months for all patients There was no statistically significant difference between the 3 groups in terms of the erectile components of IIEF questionnaire scores for the time periods and for individual patients in each separate group. Complications for all groups were also similar. CONCLUSION In consideration of long-term results, neither serious deformities nor erectile dysfunction occur as a consequence of a delay in surgery performed within the first 24 hours in patients without urethral involvement.


Kaohsiung Journal of Medical Sciences | 2016

The potential effect of age on the natural behavior of bladder cancer: Does urothelial cell carcinoma progress differently in various age groups?

Bulent Gunlusoy; Yasin Ceylan; Tansu Degirmenci; Ozgu Aydogdu; Ibrahim Halil Bozkurt; Tarik Yonguc; Volkan Sen; Zafer Kozacıoğlu

We aimed to evaluate the potential effect of age on the natural behavior of bladder cancer and to compare these findings between different age groups. The clinical and pathologic data of 239 patients treated at our institution between 1994 and 2014 were analyzed. The patients were classified into three groups according to age: ≤ 40 years (Group 1), 41–59 years (Group 2), and ≥ 60 years (Group 3). The following data were collected: characteristics of the patients, initial pathological findings after transurethral resection, tumor stage and grade, tumor size and multiplicity, and disease recurrence and progression. The mean age of the patients at initial diagnosis was 34.2 ± 5.5 years, 53 ± 5.1 years, and 71.1 ± 7 years in Groups 1, 2, and 3, respectively. There were 207 (86.6%) patients with nonmuscle‐invasive urothelial bladder cancer and 32 (13.4%) patients with muscle‐invasive disease. Tumor recurrence was significantly lower in Group 1 than in Group 2 (p = 0.001) and Group 3 (p = 0.001). Although the time to tumor recurrence was significantly different between the three groups (p = 0.001), no significant difference was noted in the time to progression (p = 0.349). Patients with urothelial cancer younger than 40 years tend to have single and small tumors. The tumor recurrence rate is lower in the younger age group, but tumor progression is similar in older and younger patients. Therefore, the findings indicate that clinicians should be careful when assessing the invasiveness of urothelial tumors in younger patients and start treatment as soon as possible.


Journal of Clinical Urology | 2018

Can we expand the borders in active surveillance for low-risk prostate cancer?:

Ekrem Islamoglu; Erdem Kisa; Cem Yücel; Orcun Celik; Ozgur Cakmak; Okan Yalbuzdag; Zafer Kozacıoğlu

Purpose: We assessed the outcomes of men with low-risk prostate cancer enrolled in active surveillance. Methods: From January 2008, patients in our clinic who were classified as having low-risk prostate cancer according to the D’Amico classification were included in the protocol. Follow-up consisted of regular prostate-specific antigen tests, digital rectal examinations and biopsies. Outcomes were compared between men who progressed and those who did not, and survival analysis was obtained. Results: The mean follow-up period was 46 months. A total of six patients received curative treatment during follow-up as a result of meeting progression criteria. The mean follow-up time from the beginning of active surveillance until curative therapy was 27.1 months. Four of our 64 patients lost their lives due to diseases other than prostate cancer, none of the patients were lost due to prostate cancer. When patients who showed progression and those who did not were compared in terms of positive core numbers and the core tumour percentage we found no significant difference between the two groups (P>0.05) Conclusion: Active surveillance seems to be a safe and feasible practice in men with low-risk prostate cancer. Gleason score, clinical stage and initial prostate-specific antigen seem to be the most definite criteria for the selection of patients, while it is thought that the number of positive cores is a matter that can be dealt with more flexibility. Level of evidence: Not applicable for this multicentre audit.


Case reports in urology | 2018

The Rare Togetherness of Bladder Leiomyoma and Neurofibromatosis

Cem Yücel; Salih Budak; Erdem Kisa; Orcun Celik; Zafer Kozacıoğlu

Neurofibromatosis Type 1 (Von Recklinghausen disease) is a common, autosomal dominant hereditary disorder characterized by involvement of multiple tissues derived from the neural crest. Urinary system involvement in neurofibromatosis is a rare condition. Leiomyoma of the bladder is a rare benign mesenchymal tumor. In this case, our experience and approach regarding the bladder leiomyoma development in a patient diagnosed with neurofibromatosis are presented and the literature data has been reviewed.


Archivio Italiano di Urologia e Andrologia | 2018

The effect of the American Society of Anesthesiology classification scores on complications associated with percutaneous nephrolithotomy

Erdem Kisa; Cem Yücel; Salih Budak; Murat Uçar; Ozgur Cakmak; Gökhan Koç; Zafer Kozacıoğlu

OBJECTIVES We aimed to evaluate the effect of American Society of Anesthesiology (ASA) classification scoring and age on complications and surgical outcomes during and after percutaneous nephrolithotomy (PCNL) operation. MATERIAL AND METHODS The records of 263 patients, above the age of 18 years, that underwent PCNL surgery between October 2014 and May 2017 were evaluated retrospectively. The patients were divided into three groups based on their ASA risk scores (ASA 1, 2, 3) and into two groups based on their age (younger and older than 65 years). Postoperative complications were assessed according to the ASA groups and age and according to the Clavien classification system. RESULTS The number of patients in the ASA 1, 2, and 3 groups were 97 (36.8%), 131 (49.8%) and 35 (13.3%), respectively. Four patients in ASA4 were not included in the study. There was no significant difference in ASA 1, 2, 3 groups in terms of changes in Hgb values, mean duration of operation, and mean hospital stay. When ASA1 was compared to ASA3 and ASA2 was compared to ASA3, there was no significant difference in the incidence of all complication rates. There were 159 (60.4%) patients in the young group and 104 (39.5%) patients in the elderly group. Postoperative PCNL complications of these 2 groups were compared according to Clavien classification system and no significant difference was found in incidence of complications. CONCLUSIONS We believe that PCNL operation can be performed effectively and safely in both ASA3 patients and patients above the age of 65 years.


Archivio Italiano di Urologia e Andrologia | 2018

Pathology outcomes in patients with transurethral bladder tumour resection in a Turkish population: A retrospective analysis

Salih Budak; Cem Yücel; Mehmet Yoldas; Erdem Kisa; Ertan Can; Ulku Kucuk; Zafer Kozacıoğlu

OBJECTIVES Transurethral bladder tumour resection (TURBT) is the common surgical method used in the diagnosis, staging and treatment of patients with bladder tumour. Most of the rare tumours other than the urothelial carcinomas of the bladder are in advanced stage on diagnosis and necessitate aggressive treatment. In our study, we aimed to the histologic types of bladder cancer and to determine the regional incidence of rare bladder cancer types in our region. MATERIALS AND METHODS We retrospectively evaluated 815 patients who underwent TURBT surgery between January 2010 and March 2016 in our clinic with a diagnosis of bladder cancer and at least 1 year follow-up. Patients with tumour histopathological examination including histological tumour type, grade and were reported. Thirty-nine patients with an unclear pathology report (neighboring organ invasion, cautery artifact, etc) and 17 patients whose data could not be accessed were excluded from the study. The patients who had received chemotherapy or radiotherapy due to any type of malignancy (23) were also excluded from the study. RESULTS The outcomes of 736 patients operated in our clinics due to bladder tumour were evaluated. The mean age was 65.2 ± 8.4; 135 were female and 601 were male. Among them 711 patients with urothelial carcinoma were reported (94.2%). According to TNM classification, stage Ta was observed in 270 patients (37.9%), stage T1 in 297 (41.7%), and stage T2 in 144 (20.3%). Non-urothelial cancers were reported in 25 cases (3.3%). CONCLUSION The incidence of bladder carcinoma varies between regions. The results of our study are similar to those of the western countries. Increased smoking and exposure to environmental carcinogenetic agents may lead to altered incidences and histological types of bladder tumours. Revision of regional tumour records may be useful to develop and evaluate future treatment strategies.

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Cem Yücel

Turkish Ministry of Health

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Erdem Kisa

Turkish Ministry of Health

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Hakan Postaci

Turkish Ministry of Health

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