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Dive into the research topics where Sarper Erdoğan is active.

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Featured researches published by Sarper Erdoğan.


Apmis | 2008

Evaluation of clinical, laboratory, and therapeutic features of 145 tularemia cases: the role of quinolones in oropharyngeal tularemia†

Meliha Meric; Ayse Willke; Ernst-Jürgen Finke; Roland Grunow; Murat Sayan; Sarper Erdoğan; Suna Gedikoglu

Tularemia outbreaks have occurred in various regions of Turkey in recent years. In this study, clinical (145 patients) and laboratory (97 patients) features of patients with oropharyngeal tularemia were evaluated during the tularemia outbreak in the district of Gölcük in Kocaeli, Turkey. We analyzed the risk factors for therapeutic failure and prolonged recovery time, and compared the efficacy of three antibiotic groups, namely aminoglycoside, tetracycline and quinolone. The most common physical sign and laboratory findings in patients were lymphadenopathy (LAP) and increased erythrocyte sedimentation rate, respectively. Treatment failure was observed in 55 of the 145 (38%) patients during one‐year follow‐up and the most successful results were obtained in the quinolone group. It was determined that antimicrobial therapy initiated 14 days after onset of symptoms was a statistically significiant risk factor, reducing the success rate (p=0.0001, OR=13.10, 95% CI=5.69–30.15) and prolonging the recovery period (p=0.001, OR=3.23, 95% CI=1.63–6.40) in oropharyngeal tularemia cases. These results suggest that antimicrobial treatment should be started early, and quinolones such as moxifloxacin and ciprofloxacin seem to be new alternatives in the treatment of oropharyngeal tularemia.


The Journal of Urology | 2012

Core Length in Prostate Biopsy: Size Matters

Can Öbek; Tunkut Doganca; Sinan Erdal; Sarper Erdoğan; Haydar Durak

PURPOSE The diagnostic yield of prostate biopsy is limited. Increasing the number of cores enhances the cancer detection rate by sampling additional sites and obtaining more tissue. An alternative way to inspect more tissue would be to obtain longer cores. However, the impact of biopsy core length on cancer detection rate is an undervalued topic. We assessed the role of biopsy core length in prostate biopsy and determined the minimal tissue length to serve as quality assurance. MATERIALS AND METHODS We retrospectively analyzed the records of 331 patients who underwent transrectal ultrasound guided initial prostate biopsy with 12 to 18 cores. The biopsy procedure and pathological evaluation were standardized. Core length was compared in patients with vs without cancer. Statistical analysis was done to determine a minimally acceptable cutoff for biopsy length. RESULTS We analyzed data on 245 patients. The overall cancer detection rate was 30.2%. Mean core length in patients with vs without cancer was 12.3±2.6 vs 11.4±2.4 mm (p=0.015). Thus, core length was significantly longer in patients with cancer. Core length greater than 11.9 mm was associated with an increased prostate cancer detection rate (OR 2.57, 95% 1.46-4.52). The cancer detection rate for cores less vs greater than 11.9 mm was 23% vs 39%. CONCLUSIONS Needle core length is an important morphometric parameter of transrectal prostate biopsy that directly influences the cancer detection rate. Results suggest a core length of greater than 11.9 mm as a cutoff for quality assurance.


Neurourology and Urodynamics | 2013

Management of lower urinary tract dysfunction in multiple sclerosis: a systematic review and Turkish consensus report.

Bulent Cetinel; Tufan Tarcan; Oktay Demirkesen; Ceyhun Özyurt; İlker Şen; Sarper Erdoğan; Aksel Siva

Since lower urinary tract dysfunction (LUTD) related to multiple sclerosis (MS) has a different behavior pattern than other types of neurogenic voiding dysfunction, we aimed to prepare a national consensus report for the management of LUTD due to multiple sclerosis in light of available literature.


BJUI | 2016

The incidence and sequela of lymphocele formation after robot-assisted extended pelvic lymph node dissection.

Mehmet Selçuk Keskin; Omer Burak Argun; Can Obek; Ilter Tufek; Mustafa Bilal Tuna; Panogiotis Mourmouris; Sarper Erdoğan; Ali Riza Kural

To determine an accurate incidence of lymphocele formation and its sequela after robot‐assisted radical prostatectomy (RARP) and extended lymph node dissection (eLND) in a contemporary prostate cancer cohort.


European Journal of Nuclear Medicine and Molecular Imaging | 2017

The accuracy of 68Ga-PSMA PET/CT in primary lymph node staging in high-risk prostate cancer

Can Obek; Tunkut Doganca; Emre Demirci; Meltem Ocak; Ali Riza Kural; Asif Yildirim; Uğur Yücetaş; Cetin Demirdag; Sarper Erdoğan; Levent Kabasakal

PurposeTo assess the diagnostic accuracy of 68Ga-PSMA PET in predicting lymph node (LN) metastases in primary N staging in high-risk and very high-risk nonmetastatic prostate cancer in comparison with morphological imaging.MethodsThis was a multicentre trial of the Society of Urologic Oncology in Turkey in conjunction with the Nuclear Medicine Department of Cerrahpasa School of Medicine, Istanbul University. Patients were accrued from eight centres. Patients with high-risk and very high-risk disease scheduled to undergo surgical treatment with extended LN dissection between July 2014 and October 2015 were included. Either MRI or CT was used for morphological imaging. PSMA PET/CT was performed and evaluated at a single centre. Sensitivity, specificity and accuracy were calculated for the detection of lymphatic metastases by PSMA PET/CT and morphological imaging. Kappa values were calculated to evaluate the correlation between the numbers of LN metastases detected by PSMA PET/CT and by histopathology.ResultsData on 51 eligible patients are presented. The sensitivity, specificity and accuracy of PSMA PET in detecting LN metastases in the primary setting were 53%, 86% and 76%, and increased to 67%, 88% and 81% in the subgroup with of patients with ≥15 LN removed. Kappa values for the correlation between imaging and pathology were 0.41 for PSMA PET and 0.18 for morphological imaging.ConclusionsPSMA PET/CT is superior to morphological imaging for the detection of metastatic LNs in patients with primary prostate cancer. Surgical dissection remains the gold standard for precise lymphatic staging.


Therapeutic Apheresis and Dialysis | 2008

β2-Microglobulin Amyloidosis in Hemodialysis and Peritoneal Dialysis Patients

Erkan Dervisoglu; Yonca Anik; Sarper Erdoğan; Gur Akansel; Ahmet Yilmaz

Abstract:  β2‐microglobulin (β2‐M) amyloidosis is an important cause of morbidity in patients on dialysis. In this cross‐sectional study, we evaluated supraspinatus tendon thickness (as a measure of shoulder involvement from β2‐M amyloidosis) in patients who are on hemodialysis (HD) compared with those on continuous ambulatory peritoneal dialysis (CAPD). In 27 patients on HD who were treated with high‐flux dialyzers, 31 patients on CAPD, and 31 healthy volunteers, we performed bilateral shoulder magnetic resonance imaging and measured the supraspinatus tendon thickness using electronic calipers. There were no statistically significant differences in age or dialysis duration between the HD and CAPD patients. Each patient was asked about the presence or absence of shoulder pain. The supraspinatus tendon thickness in HD patients (mean thickness 6.6 ± 1.3 mm, range 3.20–8.80 mm, N = 53) and CAPD patients (6.8 ± 0.9 mm, range 4.9–8.8 mm, N = 61) was not significantly different (P = 0.289); however, the mean thickness in either group was higher than in the healthy controls (5.5 ± 0.6 mm, range 4.3–6.8 mm, N = 61) (HD patients vs. controls: P = 0.000; CAPD patients vs. controls: P = 0.000). Patients with shoulder pain had higher mean supraspinatus tendon thickness measurements than patients without shoulder pain (P = 0.042). The thickness of supraspinatus tendons is not significantly different between patients on CAPD and HD. An association exists between shoulder pain and mean supraspinatus tendon thickness. This hidden complication of ESRD should be further studied in larger populations of dialysis patients.


American Journal of Men's Health | 2017

Patient Decision Making Prior to Radical Prostatectomy: What Is and Is Not Involved.

Cagatay Dogan; Hamza M. Gültekin; Sarper Erdoğan; Hamdi Özkara; Zübeyr Talat; Ahmet Erozenci; Can Öbek

The current study assessed the decision-making process before surgery in prostate cancer patients. A structured telephone interview was conducted by an independent third party in 162 consecutive patients who underwent surgery for prostate cancer. Responders revealed that details regarding diagnosis and treatment alternatives were withheld from a significant number of patients. Radiation and active surveillance were presented as alternative options to surgery in 57 (39%) and 20 (14%) of responders, respectively. Twenty-six (18%) patients reported not being informed regarding potential surgical side effects. Patients were not active participants in critical aspects of decision making in 61 (42%) of the cases. Being inadequately informed and more frequent visits to the urologist appeared to make decisions more difficult. Treatment regret was reported by 23 (16%) of the patients who underwent surgery and was more common when the patient was not involved in the decision or was inadequately informed. As such, shared decision making should replace paternalism when managing patients with localized prostate cancer in urologic practice.


Journal of Clinical Ultrasound | 2015

Procedural sedation and analgesia as an adjunct to periprostatic nerve block for prostate biopsy: A prospective randomized trial.

Tunkut Doganca; Abdurrahman Savsin; Sarper Erdoğan; Fatiş Altındaş; Fatih Ozdemir; Birsel Ekici; Can Öbek

To assess whether patient comfort could be increased by adding procedural sedation and analgesia (PSAA) to periprostatic nerve block (PNB) in patients undergoing transrectal ultrasound‐guided prostatic biopsy (TRUS‐PB).


Journal of Endourology | 2017

Prevention of Urethral Retraction with Stay Sutures (PURS) During Robot-Assisted Radical Prostatectomy Improves Early Urinary Control: A Prospective Cohort Study

Omer Burak Argun; Mustafa Bilal Tuna; Tunkut Doganca; Can Obek; Panagiotis Mourmouris; İlter Tüfek; Sarper Erdoğan; Bulent Cetinel; Ali Riza Kural

OBJECTIVE To evaluate early continence rates with a novel modified vesicourethral anastomosis technique based on prevention of urethral retraction using anastomosis sutures as stay sutures (PURS) during robot-assisted radical prostatectomy. MATERIALS AND METHODS Sixty patients operated by a single surgeon were enrolled and data collected prospectively. This cohort was compared with another consecutive 60 patients operated with standard anastomosis. The new technique is based on preventing urethral retraction of the posterior urethra with two anastomosis sutures being used as stay sutures. The outcomes were prospectively followed and groups compared regarding early continence. International Consultation on Incontinence Questionnaire Short Form was used to assess incontinence and its impact on the quality of life. Pad use (yes or no pads) was evaluated as a more stringent criterion. RESULTS Preoperative patient characteristics were similar between the two groups. Anastomosis was completed faster in PURS group (15.1 vs 18.5 min, p = 0.05). At postoperative week 1 and month 1, the severity and bother of incontinence were significantly less in the PURS group (12.7 vs 4.1 and 10.1 vs 2.6, p < 0.001). PURS cohort reported significantly superior pad-free rates at both postoperative month 1 (73% vs 35%, p < 0.0001) and month 3 (83% vs 53%, p = 0.0004). On multivariable analysis, younger age and the new anastomosis technique were two independent predictors to improve early continence. Four patients in modified anastomosis group (4/60) and 1 in standard anastomosis group (1/60) necessitated temporary urethral recatheterization because of urinary retention. CONCLUSION We describe a simple and time-efficient modified urethrovesical anastomosis technique by using anastomosis sutures as stay sutures to prevent perineal retraction of the urethral stump. Our results demonstrated that the technique is an independent factor impacting early recovery of urinary continence. Future randomized controlled studies would be required to further test the reproducibility of this technique.


The Journal of Urology | 2017

MP20-15 THE ACCURACY OF 68GALLIUM-PSMA PET/CT IN PRIMARY LYMPH NODE STAGING FOR HIGH RISK PROSTATE CANCER

Can Obek; Tunkut Doganca; Emre Demirci; Meltem Ocak; Ali Riza Kural; Asif Yildirim; Ugur Yucetas; Cetin Demirdag; Sarper Erdoğan; Levent Kabasakal

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Ali Riza Kural

Istanbul Bilim University

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Asif Yildirim

Istanbul Medeniyet University

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