Person: AKÇAY, MUZAFFER
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- PublicationMetadata onlyMicropercutaneous Nephrolithotomy in the Treatment of Moderate-Size Renal Calculi(2013-02-01T00:00:00Z) ARMAGAN, Abdullah; TEPELER, Abdulkadir; SILAY, Mesrur Selcuk; Ersoz, CEVPER; Akcay, MUZAFFER; AKMAN, Tolga; ERDEM, Mehmet Remzi; ONOL, Sinasi Yavuz; ERSÖZ, CEVPER; AKÇAY, MUZAFFERPurpose: We present our initial experience with microperc in patients with moderate-size renal calculi.
- PublicationOpen AccessComparison of transperitoneal laparoscopic nephrectomy outcomes in atrophic and hydronephrotic kidneys(2015-12-01T00:00:00Z) GÜLPINAR, MURAT TOLGA; AKÇAY, MUZAFFER; SANCAK, EYÜP BURAK; Akbas, Alpaslan; Tepeler, Abdulkadir; REŞORLU, BERKAN; Armagan, Abdullah; AKÇAY, MUZAFFERObjective: To compare the results of transperitoneal laparoscopic nephrectomy in patients with atrophic and hydronephrotic kidneys. Material and methods: Clinical data were collected from 35 patients who had undergone laparoscopic nephrectomies for atrophic or hydronephrotic non-functioning kidneys between January 2010 and March 2014. Comparative analysis was carried out between the two groups examining demographic characteristics, imaging modalities, etiology, operative times, port numbers, conversion to open surgery, complications, pre- and post-operative hemoglobin and creatinine values, transfussion rates and length of hospital stays. Results: Laparoscopic nephrectomy was performed for atrophic kidneys in 20 (57%) patients and for hydronephrotic kidneys in 15 (42%) patients. In the atrophic group, 3 patients (15%) required transfusion because of bleeding but none of the patients required conversion to open surgery. In the hydronephrotic group one patient (6.6%) required transfusion and conversion to open surgery because of bleeding. Both of the groups were similar in terms of postoperative hospital stay but compared to the atrophic kidneys, hydronephrotic ones were associated with a longer total operative times (90.1 min vs. 73.6 min, p=0.03). Any serious complication (except for bleeding) and mortality were not encountered in both groups. Conclusion: Laparoscopic nephrectomy is a safe and effective minimally invasive technique that can be used in atrophic and hydronephrotic non-functioning kidneys.
- PublicationMetadata onlyThe Role of Microperc in the Treatment of Symptomatic Lower Pole Renal Calculi(2013-01-01T00:00:00Z) TEPELER, Abdulkadir; ARMAGAN, Abdullah; Sancaktutar, Ahmet Ali; SILAY, Mesrur Selcuk; Penbegul, Necmettin; AKMAN, Tolga; Hatipoglu, Namik Kemal; Ersoz, CEVPER; ERDEM, Mehmet Remzi; Akcay, MUZAFFER; ERSÖZ, CEVPER; AKÇAY, MUZAFFERBackground and Purpose: The treatment of symptomatic lower pole (LP) calculi poses a challenge because of lower clearance rates. We present our experience with microperc in the treatment of LP renal calculi.
- PublicationOpen AccessThe relationship of neutrophil to lymphocyte ratio with testicular cancer(2020-01-01) İlktaç, Abdullah; Akbulut, Habib; Akçay, Muzaffer; Ersöz, Cevper; Doğan, Bayram; İLKTAÇ, ABDULLAH; DOĞAN, BAYRAM; ERSÖZ, CEVPER; AKÇAY, MUZAFFER; AKBULUT, HABİBPurpose: To assess the relationship between testicular germ cell tumors (TGCT) and neutrophil to lymphocyte ratio (NLR) and to determine whether this ratio can be used as a serum tumor marker. Material and Methods: Sixty-one patients with testicular germ cell tumors were included into the study. Patients were grouped as localized and non-localized. Histologically patients were categorized as seminoma and nonseminomatous germ cell tumors. Complete blood cell count was measured the day before surgery and at the postoperative 1st month. Preoperative and postoperative mean NLR values were compared. Results: Thirty-six patients (59%) had seminomas and 25 patients (41%) had nonseminomatous testicular cancer. Forty-fi ve patients (73.8%) had localized and 16 patients (26.2%) had non-localized testicular cancer. There was a statistically signifi cant difference between preoperative and postoperative mean NLR of the localized patients (p=0.001) but no such difference was detected for non-localized patients (p=0.576). Nineteen patients with localized seminomas had normal preoperative serum tumor markers. There was a signifi cant difference between preoperative and postoperative mean NLR in this group of patients (p=0.010). Twenty-six patients with localized tumors had preoperative increased serum tumor markers which normalized after orchiectomy. Mean NLR of these patients signifi cantly decreased from 3.10±2.13 to 1.62±0.59 postoperatively (p=0.010). Conclusions: NLR appears to be a useful marker for TGCT. It is successful in predicting localized and non-localized disease in early postoperative period.
- PublicationMetadata onlyRe: Elkoushy MA: Impact of Radiological Technologists on the Outcome of Shock Wave Lithotripsy (Urology 2011 [Epub ahead of print])(2012-08-01T00:00:00Z) Tepeler, Abdulkadir; AKÇAY, MUZAFFER; AKÇAY, MUZAFFER
- PublicationOpen AccessComparison of Scoring Systems in Predicting Success of Percutaneous Nephrolithotomy(2019-01-01T00:00:00Z) AKÇAY, MUZAFFER; Tosun, Muhammed; GEVHER, FATİH; KALKAN, Senad; ERSÖZ, CEVPER; Kayali, Yunus; Tepeler, Abdulkadir; AKÇAY, MUZAFFER; TOSUN, MUHAMMED; GEVHER, FATİH; KALKAN, SENAD; ERSÖZ, CEVPER; KAYALI, YUNUSBackground: Scoring systems are useful to inform the patients about the success and complication rates of the operation prior the surgery. Aims: To determine the applicability of the popular scoring systems (Guy’s, stone size, tract length, obstruction, number of involved calices, and essence/stone density and Clinical Research Office of the Endourological Society) by means of examining preoperative data of patients treated with percutaneous nephrolithotomy. Study Design: Cross sectional study. Methods: We retrospectively reviewed files of the patients who had undergone percutaneous nephrolithotomy in our center between 2011 and 2015. Excluded from the study were patients aged <18 years, and those who were not assessed preoperatively with computed tomography. Preoperative computed tomography images of all patients were assessed by a single observer, and patients were graded based on three scoring system. Demographic data were analyzed along with perioperative data (operation, fluoroscopy, length of hospital stay, changes in hematocrit values, location, and number of access sites, stone-free and complication rates). Results: A total of 298 patients who had been treated with 300 procedures were enrolled into the study. Mean age, stone burden, number of stones, and density were 48.1±12.9 years, 663.5±442.8 mm2, 1.8±1.1 and 888.3±273 HU respectively. Scores of the cases based on Guy’s, stone size, tract length, obstruction, number of involved calices, and essence/stone density, and Clinical Research Office of the Endourological Society scoring system were calculated as 2, 7.6, and 222.1 points respectively. 81.6% of the patients were stonefree. Complications were detected in 30 (9.9%) patients. Based on receiver operating characteristic curve analysis a positive correlation was detected between success rate and scoring systems, i.e., Guy’s (p=<0.001, r=-0.309), stone size, tract length, obstruction, number of involved calices, and essence/stone density (p=<0.001, r=-0.295), and Clinical Research Office of the Endourological Society (p=<0.001, r=0.426). The Clinical Research Office of the Endourological Society scoring system had the highest predictive value. The sensitivity rates rates for Guy’s, Clinical Research Office of the Endourological Society and Stone scoring system were as 78.78%, 80% and 82.34% respectively. Conclusion: All of scoring systems predicted correctly the success of the percutaneous nephrolithotomy procedures. The Clinical Research Office of the Endourological Society scoring system had the highest predictive value. Keywords: Percutaneous nephrolitotomy, scoring methods, specificity and sensitivity, urinary calculi
- PublicationOpen AccessGeneral Overview of Renal Cell Carcinoma with the Evaluation of our cases(2015-12-01) Yildiz, PELİN; Sonmez, FATMA CAVİDE; Buyukpinarbasili, NUR; Gucin, ZÜHAL; Arici, DİLEK SEMA; KOCAKOC, Ercan; Akcay, MUZAFFER; YILDIZ, PELİN; SÖNMEZ, FATMA CAVİDE; BÜYÜKPINARBAŞILI, NUR; GÜCİN, ZÜHAL; ARICI, DILEK SEMA; AKÇAY, MUZAFFERObjective: Renal cell carcinoma (RCC) is the 14th most common tumor in the world. In 2010, the protocol for the examination of kidney specimens with invasive carcinoma of renal tubular origin was updated. The aim of our study was to review 1-year RCC patients of our hospital according to the new protocol, classification, and staging systems with respect to their morphological and immunohistochemical features..
- PublicationMetadata onlyLaparoscopic Decortication of Hilar Renal Cysts Using LigaSure(2014-04-01T00:00:00Z) Erdem, Mehmet Remzi; Tepeler, Abdulkadir; Gunes, Mustafa; Silay, Mesrur Selcuk; Akman, Tolga; AKÇAY, MUZAFFER; Armagan, Abdullah; Onol, Sinasi Yavuz; AKÇAY, MUZAFFERBackground and Objectives: In this study, we evaluated the safety and efficacy of using the LigaSure sealing system (Valleylab, Boulder, Colorado) for laparoscopic decortication of symptomatic hilar renal cysts.
- PublicationMetadata onlyIS FLUOROSCOPIC IMAGING MANDATORY FOR ENDOSCOPIC TREATMENT OF URETERAL STONES?(2012-09-01T00:00:00Z) Tepeler, Abdulkadir; Armagan, Abdullah; Akman, Tolga; Silay, Mesrur Selcuk; AKÇAY, MUZAFFER; Basibuyuk, Ismail; Erdem, Mehmet Remzi; Onol, Sinasi Yavuz; AKÇAY, MUZAFFER
- PublicationMetadata onlyIs micro-percutaneous nephrolithotomy surgery technically feasible and efficient under spinal anesthesia?(2015-06-01T00:00:00Z) Karatag, Tuna; Tepeler, Abdulkadir; Buldu, Ibrahim; AKÇAY, MUZAFFER; TOSUN, MUHAMMED; Istanbulluoglu, Mustafa Okan; Armagan, Abdullah; AKÇAY, MUZAFFER; TOSUN, MUHAMMEDThe objective of the study was to present the clinical and operative effects of two types of anesthesia on micro-percutaneous nephrolithotomy (-microperc-). We retrospectively reviewed 116 patients who underwent microperc between August 2011 and September 2013. Patients were sorted into one of the two groups according to the type of anesthesia received: general (Group 1, n:53) or spinal (Group 2, n:63). Perioperative variables (age, stone size, location) and outcomes (operation time, success, complication rate) were evaluated and compared. Although there was a statistically significant difference in the mean age of patients (30.3 +/- A 22.1 vs. 45.8 +/- A 14.6, respectively, p < 0.001), mean body mass indexes were similar (p = 0.689). There was no substantial difference in terms of sizes and localizations of stones in the two groups (p = 0.970 and p = 0.795). While a significant difference was found in comparison of operative times (59.62 +/- A 32.56 vs. 40.98 +/- A 26.45 min, p < 0.001), there was no statistically significant difference in mean fluoroscopy times (124.92 +/- A 84.2 vs. 105.2 +/- A 61.0 s, p = 0.441). Stone-free rates were similar (90.5 % vs. 93.6 %, p = 0.297). We found no statistical differences between the two groups with respect to mean hemoglobin drop and hospitalization time (p = 0.015 and p = 0.917, respectively). The complication rates and analog pain scores were also similar (p = 0.543 and p = 0.365). Our results show that microperc is a feasible surgical modality in the treatment of kidney stone disease under both spinal and general anesthesia. Spinal anesthesia may be considered for patients at a high risk for general anesthesia, and also may be an alternative for patients who are concerned about and/or fearful of general anesthesia.