Person: DOĞAN, BAYRAM
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Publication Metadata only Diagnostic significance of biopsies in renal masses.(2014-01-01T00:00:00Z) Dogan, BAYRAM; ALTINOVA, S; OZDEMIR, AT; OZCAN, MF; ASIL, E; AKBULUT, Z; BALBAY, MD; DOĞAN, BAYRAMPublication Open Access The 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.Publication Metadata only The use of computed tomography as the first imaging modality in patients with renal colic and microscopic haematuria(2020-11-01T00:00:00Z) Sen, Volkan; Ongun, Sakir; Sahin, Mehmet Oguz; Irer, Bora; Kizer, Onur; DOĞAN, BAYRAM; Yildiz, Guner; DOĞAN, BAYRAMObjective We aimed to evaluate the use of computed tomography (CT) as the first imaging modality in patients with renal colic and microscopic haematuria.Publication Metadata only Ureteric duplication is not a contraindication for robot-assisted laparoscopic radical cystoprostatectomy and intracorporeal Studer pouch formation.(2011-10-01T00:00:00Z) CANDA, AE; Dogan, BAYRAM; ATMACA, AF; AKBULUT, Z; BALBAY, MD; DOĞAN, BAYRAMPublication Open Access Mesh related vesico-peritoneal fistula presenting with urinary ascites: A case report(2019-03-01T00:00:00Z) İLKTAÇ, ABDULLAH; ERSÖZ, CEVPER; DOĞAN, BAYRAM; KALKAN, Senad; İLKTAÇ, ABDULLAH; ERSÖZ, CEVPER; DOĞAN, BAYRAM; KALKAN, SENADVesicoperitoneal fistula is a very rare entity of epithelialized communication between peritoneal cavity and bladder.1 It results in accumulation of urine in peritoneal cavity and causes elevated urea and creatinine levels mimicking acute renal failure. Incisional hernia is common complication of abdominal surgery and often repaired with non-absorbable mesh.2 Using dual mesh can reduce mesh related complications but migration to adjacent organs can still happen and cause severe complications. Here we present a case of mesh related vesico-peritoneal fistula presenting with urinary ascites 2 years after incisional hernia repair.Publication Metadata only Is sampling transitional zone in patients who had prior negative prostate biopsy necessary?(2012-08-01T00:00:00Z) Dogan, BAYRAM; SEREFOGLU, EC; ATMACA, AF; CANDA, AE; AKBULUT, Z; Derya, Balbay; DOĞAN, BAYRAMPublication Metadata only Re: Histological Subtype is an Independent Predictor of Outcome for Patients With Renal Cell Carcinoma(2010-11-01T00:00:00Z) Dogan, BAYRAM; CANDA, Abdullah Erdem; AKBULUT, Ziya; BALBAY, Mevlana Derya; DOĞAN, BAYRAMPublication Metadata only The optimal settings of holmium YAG laser in treatment of pediatric urolithiasis.(2021-01-21T00:00:00Z) Ersoz, Cevper; Ilktac, ABDULLAH; Kalkan, Senad; Danacioglu, Yavuz Onur; Silay, Mesrur Selcuk; ERSÖZ, CEVPER; İLKTAÇ, ABDULLAH; DOĞAN, BAYRAM; KALKAN, SENADThe aim of this study is to present our experience on the use of the holmium:yttrium-aluminum-garnet (Ho:YAG) laser in pediatric patients for pediatric urolithiasis and describe the optimal settings. A total of 116 children who underwent urolithiasis treatment (percutaneous nephrolithotomy (PNL), ureterorenoscopy (URS), retrograde intrarenal surgery (RIRS)) were included. The mean age of the patients was 8.4 ± 5.2 years (1-18). The mean follow-up was 26 ± 8.8 months (9-45). There was no difference between the mean stone sizes of PNL and RIRS patients (p = 0.816). Operations were performed with 200, 272, and 365-μm fibers. In mini-URS, stone fragmentation was achieved with the energy settings set between 0.5 and 1 J and frequency set to > 8 Hz. In RIRS, fragmentation was achieved with the setting of 0.5-0.8 J at 10-20 Hz. Stone fragmentation was performed with energy settings of 0.8 to 2 J between 5 and 15 Hz for PNL. There was no significant difference between the stone-free rates of the PNL and RIRS (p = 0.150). Four postoperative complications occurred (Clavien II), which included febrile urinary infections in two patients who underwent mini-URS, one patient who underwent PNL, and one patient who underwent RIRS. Our results confirmed that Ho-YAG laser can be effectively used in children for stone treatment by using low-energy high-frequency settings for URS and RIRS and a high energy setting for PNL.Publication Open Access Expression of transient receptor potential melastatin 4 in differential diagnosis of eosinophilic renal tumors(2021-11-01T00:00:00Z) ÇOBAN, GANİME; YILDIZ, PELİN; DOĞAN, BAYRAM; ŞAHİN, NURHAN; GÜCİN, ZÜHAL; ÇOBAN, GANİME; YILDIZ, PELİN; DOĞAN, BAYRAM; ŞAHİN, NURHAN; GÜCİN, ZÜHALImmunohistochemical and molecular studies to differentiate eosinophilic kidney tumors are gradually increasing. The present study investigated the role of transient receptor potential cation channel subfamily M member 4 (TRPM4), a non-selective cation channel associated with migration, proliferation and invasion in cancer cells, in this differentiation. The aim was to investigate the effectiveness of TRPM4 in differentiation of eosinophilic kidney tumors. The study included a total of 112 patients, including 97 eosinophilic kidney tumors with the diagnoses of 33 eosinophilic clear cell renal cell carcinoma (CCRCC), 35 eosinophilic chromophobe renal cell carcinoma (ChRCC), 8 papillary renal cell carcinoma type 2 (P2RCC), 21 renal oncocytoma (RO), as well as 15 papillary renal cell carcinoma type 1 to differentiate from P2RCC. For TRPM4, diffuse staining (>10%) was observed in 2 CCRCC, 15 ChRCC, 20 RO and 4 P2RCC cases. There was a significant difference between eosinophilic CCRCC and other eosinophilic tumors (P<0.05). While basolateral staining was observed in papillary tumors, membrane staining was observed in other stained cases. It was hypothesized that the use of TRPM4 along with morphological findings, cytokeratin 7 and other markers may be useful for the differentiation of eosinophilic kidney tumors.Publication Metadata only Efficiency of percutaneous nephrolithotomy in pediatric patients using adult-type instruments.(2012-06-01T00:00:00Z) Dogan, BAYRAM; ATMACA, AF; CANDA, AE; ISGOREN, AE; AKBULUT, Z; BALBAY, MD; DOĞAN, BAYRAM