Yazar "İzol, Volkan" seçeneğine göre listele
Listeleniyor 1 - 4 / 4
Sayfa Başına Sonuç
Sıralama seçenekleri
Öğe Predictive Role of the Systemic Immune Inflammation Index for Intravesical BCG Response in Intermediate- and High-Risk Non-Muscle-Invasive Bladder Cancer(Karger, 2023) Bolat, Deniz; Baltacı, Sümer; Akgül, Murat; Karabay, Emre; İzol, Volkan; Aslan, Güven; Eskiçorapçı, SaadettinIntroduction: In this study, we aimed to explore using the predictive role of systemic immune inflammation index (SII) for responses of intravesical Bacillus Calmette-Guerin (BCG) therapy in patients with intermediate- and high-risk non-muscle-invasive bladder cancer (NMIBC). Methods: From 9 centers, we reviewed the data of patients treated for intermediate- and high-risk NMIBC between 2011 and 2021. All patients enrolled in the study presented with T1 and/or high-grade tumors on initial TURB had undergone re-TURB within 4-6 weeks after initial TURB and had received at least a 6-week course of intravesical BCG induction. SII was calculated with the formula SII = (P x N)/L, where P, N, and L refer to peripheral platelet, neutrophil, and lymphocyte counts, respectively. In patients with intermediate- and high-risk NMIBC, the clinicopathological features and follow-up data were evaluated to compare SII with other systemic inflammation-based prognostic indices. These included the neutrophil-to-lymphocyte ratio (NLR), platelet-to-neutrophil ratio (PNR), and platelet-to-lymphocyte ratio (PLR). Results: A total of 269 patients were enrolled in the study. Median follow-up time was 39 months. Disease recurrence and progression were observed in 71 (26.4%) and 19 (7.1%) patients, respectively. For groups with and without disease recurrence in terms of NLR, PLR, PNR, and SII calculated prior to intravesical BCG treatment, no statistically significant differences were observed (p = 0.470, p = 0.247, p = 0.495, and p = 0.243, respectively). Moreover, there were also no statistically significant differences between the groups with and without disease progression in terms of NLR, PLR, PNR, and SII (p = 0.504, p = 0.165, p = 0.410, and p = 0.242, respectively). SII did not show any statistically significant difference between early (<6 months) and late (>= 6 months) recurrence (p = 0.492) and progression groups (p = 0.216). Conclusion: For patients with intermediate- and high-risk NMIBC, serum SII levels do not present as an appropriate biomarker for the prediction of disease recurrence and progression following intravesical BCG therapy. A possible explanation for the failure of SII to predict BCG response may be found in the impact of Turkey's nationwide tuberculosis vaccination program.Öğe Survival Outcomes of Treatment Modalities in Patients with Variant Histopathology of Bladder Cancer in First Transurethral Resection of the Bladder(2024) İzol, Volkan; Değer, Mutlu; Akdoğan, Bülent; Akgül, Murat; Aslan, Güven; Çelik, Serdar; Argun, BurakObjective: Diagnoses of variant histopathology (VH) in bladder cancer (BC) are increasing, and although there is a standard treatment algorithm for BC, the guidelines lack a standardized approach for treating VH in BC. We aimed to compare the survival results of the treatment algorithm applied to patients with BC with VH in the first transurethral resection of the bladder (TUR-B) procedure. Materials and Methods: We retrospectively assessed data on patients with VH of BC in the first TUR-B between January 2000 and January 2021. After the first TUR-B, we determined TUR-B+/- BCG, radical cystectomy (RC), and trimodal therapy (TMT) as the three potential treatments for patients according to the initial plans applied by the clinics. Results: A total of 289 patients with VH of BC in the first TUR-B were included in the study. Their mean age was 66.7±10.1 years, and most (246, 85.1%) were male. We found that TMT was associated with lower survival, and BCG administration offered no advantage in terms of overall survival (OS) or cancer specific survival (CSS) among patients with non-muscle-invasive bladder cancer (NMIBC). In patients with MIBC, immediate RC provided a significant advantage over other treatment methods in terms of both OS and CSS. Conclusions: There is still no standard treatment for patients with VH of BC. Patients are less likely to survive TMT than other treatment modalities.Öğe The Effect of Diagnostic Ureterorenoscopy on Intravesical Recurrence in Patients Undergoing Nephroureterectomy for Primary Upper Tract Urinary Carcinoma(Karger, 2021) İzol, Volkan; Değer, Mutlu; Özden, Ender; Bolat, Deniz; Argun, Burak; Baltacı, Sümer; Bayazıt, Yıldırım; Akgül, Hacı MuratObjective: The objective of this study is to evaluate the effect of diagnostic ureterorenoscopy (URS) prior to radical nephroureterectomy (RNU) on intravesical recurrence (IVR), in patients with primary upper urinary tract urothelial carcinoma (UTUC). Materials and Methods: Retrospective analysis of 354 patients, who underwent RNU for UTUC from 10 urology centers between 2005 and 2019, was performed. The primary endpoint was the occurrence of IVR after RNU. Patients were divided into URS prior to RNU (Group 1) and no URS prior to RNU (Group 2). Rates of IVR after RNU were compared, and a Cox proportional hazards model was used to evaluate potential predictors of IVR. Results: After exclusion, a total of 194 patients were analyzed: Group 1 n = 95 (49.0%) and Group 2 n = 99 (51.0%). In Group 1, a tumor biopsy and histopathological confirmation during URS were performed in 58 (61.1%). The mean follow-up was 39.17 +/- 39.3 (range 12-250) months. In 54 (27.8%) patients, IVR was recorded after RNU, and the median recurrence time within the bladder was 10.0 (3-144) months. IVR rate was 38.9% in Group 1 versus 17.2% in Group 2 (p = 0.001). In Group 1, IVR rate was 43.1% in those undergoing intraoperative biopsy versus 32.4% of patients without biopsy during diagnostic URS (p =0.29). Intravesical recurrence-free survival (IRFS) was longer in Group 2 compared to Group 1 (median IRFS was 111 vs. 60 months in Groups 2 and 1, respectively (p< 0.001)). Univariate analysis revealed that IRFS was significantly associated with URS prior to RNU (HR: 2.9, 95% CI 1.65-5.41; p < 0.001). In multivariate analysis, URS prior to RNU (HR: 3.5, 95% CI 1.74-7.16; p < 0.001) was found to be an independent prognostic factor for IRFS. Conclusion: Diagnostic URS was associated with the poor IRFS following RNU for primary UTUC. The decision for a diagnostic URS with or without tumor biopsy should be reserved for cases where this information might influence further treatment decisions.Öğe The real-life management of overactive bladder: Turkish Continence Society multicenter prospective cohort study with short-term outcome(Wiley, 2019) Zümrütbaş, Ali E.; Çitgez, Sinharib; Acar, Ömer; İzol, Volkan; Uzun, Hakki; Kabay, Şahin; Demirkesen, Oktay; Yazıcı, CenkIntroduction Turkish Continence Society aimed to analyze how overactive bladder (OAB) is being managed in routine practice by the urologists in Turkey. Material and methods Fourteen urology departments were randomly selected to represent the whole population in this multicenter study. An online data entry and storage software was created for patient recruitment and data assessment. A survey including demographic data, daily habits, lower urinary tract symptoms, and Turkish-validated OAB-V8 and ICIQ-SF questionnaires were completed by all patients. Second part of the survey, including the questions about clinical evaluation and management of the patient, was completed by the treating physician. Results A total of 507 patients (394 female and 113 male) were included. Behavioral therapy was recommended to 73.2% of female and 81.4% of male patients although bladder diary was requested for 59.5% and 52.7% of the female and male patients, respectively. In the first visit, 86.1% of the female and 89.3% of the male patients were given antimuscarinics (P = .431). Antimuscarinic-related side effects occurred in 94.9% and 88.9% of the female and male patients, respectively (P = .937). However, the rate of medical treatment change due to antimuscarinic-related side effects was only 1.7% in female and 4.8% in male patients at the end of 4 months. Conclusions Behavioral therapy and antimuscarinics were the preferred initial treatment modalities of OAB in concordance with the guidelines. Despite guideline recommendations, bladder diaries were not utilized in half of the patients. Insufficient efficacy appeared to be the main reason for treatment modification.