Browsing by Author "Petronic, Dragica Milenkovic (56676323500)"

To compare the total fluoroscopy time (FT) based on the fluoroscopy mode used—continuous vs. pulsed—in patients who underwent percutaneous nephrolithotomy (PCNL). The study cohort evaluated 111 patients who underwent PCNL by a single surgeon. Standard (continuous) fluoroscopy of 30 frames per second (fps) was used in the first 56 cases (SF group), while the next 55 consecutive cases were performed under pulsed fluoroscopy of two fps (PF group). The presence of surgeon’s previous experience decreased the possible impact of the learning curve on the outcome. In both groups, using ultrasound in combination to fluoroscopy performed the renal access. The stone complexity was determined using Guy’s stone score (GSS). Complications were evaluated using Clavien-Dindo classification. Median FT was significantly lower in PF group (76.8 s) compared to SF group (155.4 s) (p < 0.001). Stone-free rate was related to the Guy’s stone score (GSS) classification reaching 100 % in GSS 1 cases in both groups. In GSS 2 cases the stone free rate was 87.5 % in SF group, while in PF group it was 92.3 %. Stone free rate in GSS 3 cases was 73.3 and 85.7 % in SF and PF groups, respectively. In cases of GSS 4 stone free rate was 52 % in SF group and 55.6 % in PF group, respectively. Presence of residual fragments and complications were comparable in both groups. Following ultrasound-guided puncture during PCNL, the use of pulsed fluoroscopy leads to significantly lower radiation exposure comparing to the use of continuous fluoroscopy. This advantage does not compromise the safety and efficacy of the procedure. © 2016, Springer-Verlag Berlin Heidelberg.

Urothelial carcinomas are malignant tumors that arise from the urothelial epithelium and may involve the lower and upper urinary tract. They are characterized by multiple, multifocal recurrences throughout the genitourinary tract. Bladder tumors account for 90-95% of urothelial carcinomas and are the most common malignancies of the urinary tract. Upper urinary tract urothelial carcinomas (UTUC) are relatively rare, accounting for 5% of urothelial tumors. The incidence of subsequent bladder cancer after surgical treatment for UTUC is approximately 15-50%. In contrast, patients with a primary tumor of the bladder have a low risk (2-6%) the development of UTUC. Identification of prognostic f actors and early detection of recurrent disease provide a better strategy for postoperative monitoring, surveillance, and potentially improve patient outcomes. In this review study we discuss the main risk factors for UTUC recurrence after radical cystectomy, and risk factors for intravesical recurrence after radical nephroureterectomy.

Urothelial carcinomas are malignant tumors that arise from the urothelial epithelium and may involve the lower and upper urinary tract. They are characterized by multiple, multifocal recurrences throughout the genitourinary tract. Bladder tumors account for 90-95% of urothelial carcinomas and are the most common malignancies of the urinary tract. Upper urinary tract urothelial carcinomas (UTUC) are relatively rare, accounting for 5% of urothelial tumors. The incidence of subsequent bladder cancer after surgical treatment for UTUC is approximately 15-50%. In contrast, patients with a primary tumor of the bladder have a low risk (2-6%) the development of UTUC. Identification of prognostic f actors and early detection of recurrent disease provide a better strategy for postoperative monitoring, surveillance, and potentially improve patient outcomes. In this review study we discuss the main risk factors for UTUC recurrence after radical cystectomy, and risk factors for intravesical recurrence after radical nephroureterectomy.