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Purpose To compare surgical outcomes between the lateral and the posterior approach for retroperitoneal laparoscopic adrenalectomy (RLA). Materials and Methods We retrospectively reviewed the records of 130 patients who underwent RLA for adrenal tumors by a single surgeon between January 2015 and December 2018. Patient characteristics and perioperative outcomes were analyzed and compared between two surgical groups lateral approach (n=56) and posterior approach (n=74). ZK62711 Results There were no significant differences in perioperative outcomes between the two groups except for operative time (lateral approach, 105.4±41.21 minutes vs. link2 posterior approach, 71.5±31.51 minutes; p=0.001). link3 In the lateral approach group, two patients (3.6%) underwent open conversion, but there were no major complications in either group (Clavien-Dindo classification ≥3). Male sex was associated with an operative time of ≥90 minutes in the univariate analysis (p=0.019), but this effect did not remain significant in the multivariate analysis. In the multivariate analysis, large tumor size (>5 cm; p=0.020) and preoperative diagnosis of malignancy (p=0.043) were significantly associated with an operative time of ≥90 minutes. Conclusions Both the lateral and posterior approaches for RLA were performed safely with similar operative outcomes and are therefore comparable options for the treatment of adrenal tumors. In addition, large tumor size and preoperative diagnosis of malignancy are associated with longer operative times. © The Korean Urological Association, 2020.Purpose To report an initial single-surgeon experience with single-port robot-assisted radical prostatectomy (SP-RARP) using the da Vinci SP surgical system (Intuitive Surgical, USA). Materials and Methods Between December 2018 and October 2019, a single surgeon performed SP-RARP in 20 patients with prostate cancer. SP-RARP was performed using the conventional approach through an umbilical port with a GelPOINT access system (Applied Medical, USA) and an additional assist port. During surgery, the camera was placed in the 6- or 12-o'clock position, and a traction arm was placed in the counterpart position for upward or downward traction. Clinicopathologic data, perioperative data, and short-term surgical outcomes were analyzed. ZK62711 Results Of 20 patients, 45% of patients had pT3 or greater disease and 45% had Gleason grade 4 to 5, respectively. In 11 patients that underwent lymph node dissection, the median number of lymph nodes removed was 19 (interquartile range [IQR], 14-22). Median operative time was 245 minutes (IQR, 200-255), and median console time was 190 minutes (IQR, 165-210). Median blood loss was 200 mL (IQR, 150-300 mL), and there were no intraoperative complications or open conversion. In 10 patients with a follow-up period longer than 3 months, one patient experienced biochemical recurrence, and all patients required 0 to 1 pads per day. Of seven patients that were potent before surgery, four recovered erectile function sufficient for intercourse. Conclusions Our report shows the safety and feasibility of SP-RARP, and that the associated surgical outcomes with short-term follow-up are satisfactory. © The Korean Urological Association, 2020.Purpose As prostate cancer (PCa) is the second most commonly diagnosed cancer worldwide, finding novel markers for prognosis is crucial. BRCA1-associated protein 1 (BAP-1), a nuclear-localized deubiquitinating enzyme, has been reported in several human cancers. However, its prognostic role in PCa remains unknown. link2 Herein, we assessed the prognostic and clinicopathologic significance of BAP-1 in PCa. Materials and Methods Seventy surgical specimens from radical prostatectomy cases were examined. Two cores per case were selected for construction of tissue microarrays (TMAs). After the exclusion of two cases because of tissue sparsity, BAP-1 immunohistochemical expression was evaluated in 68 cases of formalin-fixed, paraffin-embedded TMA tissue blocks. The immunohistochemical stain was scored according to proportion of nuclear staining negative ( less then 10% of tumor cells) or positive (≥10% of tumor cells). Results BAP-1 expression was negative in 30 cases (44.1%) and positive in 38 cases (55.9%). Positive BAP-1 expression was more common in pT3b disease than in pT2 (p=0.038). A high preoperative prostate-specific antigen level was correlated with BAP-1 expression (p=0.014). Age, lymphovascular invasion, perineural invasion, and grade group were not significantly correlated with BAP-1 expression. Patients with positive BAP-1 expression showed significantly shorter disease-free survival (p=0.013). Additionally, BAP-1 was an independent prognostic factor of PCa (p=0.035; hazard ratio, 9.277; 95% confidence interval, 1.165-73.892). Conclusions Our study findings showed an association of BAP-1 expression with poor PCa prognosis and suggest a potential role for BAP-1 as a prognostic biomarker for PCa. ZK62711 © The Korean Urological Association, 2020.Purpose To evaluate the impact of diagnostic ureteroscopy performed before radical nephroureterectomy (RNU) on intravesical recurrence (IVR) in patients with upper tract urothelial carcinoma (UTUC). Materials and Methods From May 2003 to December 2018, patients who underwent RNU for UTUC were enrolled and divided into two groups according to whether they underwent preoperative ureteroscopy (Pre-U vs. Non-U). We excluded patients who had a history of bladder cancer and did not receive bladder cuff resection during surgery. link3 Perioperative parameters were compared between the two groups by use of t-tests or chi-square tests. Kaplan-Meier and Cox proportional hazards analyses were used to assess the association between Pre-U and IVR. Results Of the 453 total patients, 226 patients (49.9%, Pre-U group) had received diagnostic ureteroscopy before RNU, and 227 patients (50.1%, Non-U group) had not. IVR occurred in 99 patients (43.8%) in the Pre-U group and 61 patients (26.9%) in the Non-U group (p=0.001). The median time to recurrence was 107 months. The 5-year IVR-free survival rates were 56.2% and 73.1% in the Pre-U and Non-U groups, respectively (log rank test, p less then 0.001). Multivariate Cox proportional hazards analysis showed that Pre-U was a significant factor (hazard ratio, 1.413; 95% confidence interval, 1.015-1.965; p=0.040) after adjustment for other factors including tumor stage, location, etc. Conclusions Preoperative diagnostic ureteroscopy before RNU was a significant factor for IVR. Therefore, we should carefully consider Pre-U before RNU for nonobvious ureteral lesions. These results should be validated in a prospective study. © The Korean Urological Association, 2020.Purpose This study aimed to compare progression-free survival (PFS), overall survival (OS), and cancer-specific survival (CSS) in Heng intermediate-risk patients with metastatic renal cell carcinoma (mRCC) treated with first-line immunotherapy (IT) or targeted therapy (TT). Materials and Methods From 2000 to 2017, a total of 186 intermediate-risk mRCC patients treated with first-line IT (n=64, 34.4%) or TT (n=122, 65.6%) were retrospectively evaluated for PFS, OS, and CSS using the Kaplan-Meier method with log-rank test and Cox proportional hazards models for their risk factors with a p-value for significance of less then 0.05. Results During a median 5.08-month of systemic treatment and 92.22 months of follow-up, the median PFS, OS, and CSS were 5.16, 18.44, and 19.04 months, respectively. The comparison of baseline characteristics between the two groups showed a significantly higher rate of T3-4 stages, a lower rate of high nuclear grades, shorter follow-up, longer treatment durations, lesser rates of cytoreductive nephrectomy, a lower objective response rate, and no cases of complete response in the TT group compared with the IT group (p less then 0.05). The survival comparisons between the two groups showed that PFS was significantly different, whereas OS and CSS were not significantly different. The multivariate analyses showed that synchronous metastatic type(hazard ratio [HR], 2.285), IT (HR, 1.746), and treatment-free interval less then 1 year (HR, 1.926) were significant factors for PFS, whereas none of the risk factors were significant for OS or CSS. Conclusions TT significantly prolonged PFS compared with IT, whereas long-term survival was not significantly different in intermediate-risk mRCC patients. © The Korean Urological Association, 2020.Purpose To evaluate the impact of perioperative blood transfusion (PBT) on oncologic outcomes after surgery in patients with nonmetastatic renal cell carcinoma (RCC). Materials and Methods This retrospective review included 2,329 patients who underwent partial or radical nephrectomy for localized RCC in a single institution from 2000 to 2014. PBT was defined as transfusion of allogeneic packed red blood cells (pRBCs) during nephrectomy or within the preoperative or postoperative hospitalization period. Oncologic outcomes of interest were recurrence-free survival (RFS), overall survival (OS), and cancer-specific survival (CSS). link2 Results PBT was performed in 275 patients (11.8%). In the multivariable logistic regression analysis, symptomatic presentation, advanced age at surgery, higher preoperative serum creatinine, and lower preoperative hemoglobin were independent preoperative risk factors for PBT (all p less then 0.05). Kaplan-Meier plots revealed that transfused patients showed poorer 5-year RFS (65.1% vs. 91.2%, p less then 0.001), OS (71.4% vs. 92.8%, p less then 0.001), and CSS (74.0% vs. 95.5%, p less then 0.001) than nontransfused patients. However, in the multivariable Cox regression analyses, PBT was not significantly associated with RFS, OS, or CSS. In multivariable analyses involving transfused patients only (n=275), an higher number of pRBC units was an independent predictor of worse OS (hazard ratio [HR], 1.043; 95% confidence interval [CI], 1.008-1.078; p=0.016) and CSS (HR, 1.066; 95% CI, 1.033-1.100; p less then 0.001). Conclusions The results of this study are inconclusive in that the influence of PBT on survival outcomes could not be determined in the multivariate analysis. However, increasing pRBC units in transfused patients might be a concern in light of worse OS and CSS. Therefore, efforts to limit PBT overuse seem necessary to improve postoperative survival in patients with RCC. © The Korean Urological Association, 2020.Purpose This study aimed to evaluate the feasibility of pan-cancer panel analysis for locally advanced prostate cancer in the Korean population. Materials and Methods We analyzed 20 patients with locally advanced prostate cancer who underwent radical prostatectomy. A pan-cancer panel (1.9 Mbp) developed by Seoul National University Hospital (SNUH), composed of 183 target genes, 23 fusion genes, and 45 drug target regions was used for this analysis. We compared the SNUH pan-cancer panel results with The Cancer Genome Atlas (TCGA) database to search for different mutations in the Korean population. Clinical data were analyzed with univariate and multivariate analysis, and p-values less then 0.05 were considered statistically significant. Kaplan-Meier curve and log-rank tests were performed to evaluate survival. link3 Results The average age of the patients and initial prostate-specific antigen values were 69.3±7.8 years and 66.3±16.9 ng/dL, respectively. Average sequencing depth was 574.5±304.1×. Ninety-nine genetic mutations and 5 fusions were detected.

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