The Experts below are selected from a list of 192 Experts worldwide ranked by ideXlab platform
Po Hui Chiang - One of the best experts on this subject based on the ideXlab platform.
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Diagnostic Ureteroscopy Independently Correlates with Intravesical Recurrence after NephroUreterectomy for Upper Urinary Tract Urothelial Carcinoma
Annals of Surgical Oncology, 2013Co-Authors: Chih Hsiung Kang, Yen Ta Chen, Yao Chi Chuang, Yuan Tso Cheng, Po Hui ChiangAbstract:Background Little is known about the effects of diagnostic Ureteroscopy on intravesical recurrence after nephroUreterectomy. Methods This study was designed to determine the effect of diagnostic Ureteroscopy on intravesical recurrence after nephroUreterectomy. From 2004 to 2010, 446 patients underwent nephroUreterectomy for upper urinary tract cancer at our tertiary medical center. We included 115 patients who underwent preoperative diagnostic Ureteroscopy and 281 patients who did not. This study analyzed the impact of the reported risk factors and diagnostic Ureteroscopy for intravesical recurrence after nephroUreterectomy by multivariate Cox regression model. Results The rates of metastasis and cancer-specific mortality did not differ significantly between the two groups. Diagnostic Ureteroscopy was associated with a higher incidence of intravesical recurrence in patients with ( p = 0.02) and without ( p = 0.016) a previous history of bladder cancer. Ureter Tumor biopsy ( p = 0.272) and Ureter involvement ( p = 0.743) were not associated with the rate of intravesical recurrence in this study. Multivariate Cox regression analysis showed that only bladder cancer history ( p
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Diagnostic Ureteroscopy independently correlates with intravesical recurrence after nephroUreterectomy for upper urinary tract urothelial carcinoma.
Annals of Surgical Oncology, 2013Co-Authors: Chih Hsiung Kang, Yen Ta Chen, Yao Chi Chuang, Yuan Tso Cheng, Po Hui ChiangAbstract:BACKGROUND: Little is known about the effects of diagnostic Ureteroscopy on intravesical recurrence after nephroUreterectomy. METHODS: This study was designed to determine the effect of diagnostic Ureteroscopy on intravesical recurrence after nephroUreterectomy. From 2004 to 2010, 446 patients underwent nephroUreterectomy for upper urinary tract cancer at our tertiary medical center. We included 115 patients who underwent preoperative diagnostic Ureteroscopy and 281 patients who did not. This study analyzed the impact of the reported risk factors and diagnostic Ureteroscopy for intravesical recurrence after nephroUreterectomy by multivariate Cox regression model. RESULTS: The rates of metastasis and cancer-specific mortality did not differ significantly between the two groups. Diagnostic Ureteroscopy was associated with a higher incidence of intravesical recurrence in patients with (p=0.02) and without (p=0.016) a previous history of bladder cancer. Ureter Tumor biopsy (p=0.272) and Ureter involvement (p=0.743) were not associated with the rate of intravesical recurrence in this study. Multivariate Cox regression analysis showed that only bladder cancer history (p
Chih Hsiung Kang - One of the best experts on this subject based on the ideXlab platform.
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Diagnostic Ureteroscopy Independently Correlates with Intravesical Recurrence after NephroUreterectomy for Upper Urinary Tract Urothelial Carcinoma
Annals of Surgical Oncology, 2013Co-Authors: Chih Hsiung Kang, Yen Ta Chen, Yao Chi Chuang, Yuan Tso Cheng, Po Hui ChiangAbstract:Background Little is known about the effects of diagnostic Ureteroscopy on intravesical recurrence after nephroUreterectomy. Methods This study was designed to determine the effect of diagnostic Ureteroscopy on intravesical recurrence after nephroUreterectomy. From 2004 to 2010, 446 patients underwent nephroUreterectomy for upper urinary tract cancer at our tertiary medical center. We included 115 patients who underwent preoperative diagnostic Ureteroscopy and 281 patients who did not. This study analyzed the impact of the reported risk factors and diagnostic Ureteroscopy for intravesical recurrence after nephroUreterectomy by multivariate Cox regression model. Results The rates of metastasis and cancer-specific mortality did not differ significantly between the two groups. Diagnostic Ureteroscopy was associated with a higher incidence of intravesical recurrence in patients with ( p = 0.02) and without ( p = 0.016) a previous history of bladder cancer. Ureter Tumor biopsy ( p = 0.272) and Ureter involvement ( p = 0.743) were not associated with the rate of intravesical recurrence in this study. Multivariate Cox regression analysis showed that only bladder cancer history ( p
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Diagnostic Ureteroscopy independently correlates with intravesical recurrence after nephroUreterectomy for upper urinary tract urothelial carcinoma.
Annals of Surgical Oncology, 2013Co-Authors: Chih Hsiung Kang, Yen Ta Chen, Yao Chi Chuang, Yuan Tso Cheng, Po Hui ChiangAbstract:BACKGROUND: Little is known about the effects of diagnostic Ureteroscopy on intravesical recurrence after nephroUreterectomy. METHODS: This study was designed to determine the effect of diagnostic Ureteroscopy on intravesical recurrence after nephroUreterectomy. From 2004 to 2010, 446 patients underwent nephroUreterectomy for upper urinary tract cancer at our tertiary medical center. We included 115 patients who underwent preoperative diagnostic Ureteroscopy and 281 patients who did not. This study analyzed the impact of the reported risk factors and diagnostic Ureteroscopy for intravesical recurrence after nephroUreterectomy by multivariate Cox regression model. RESULTS: The rates of metastasis and cancer-specific mortality did not differ significantly between the two groups. Diagnostic Ureteroscopy was associated with a higher incidence of intravesical recurrence in patients with (p=0.02) and without (p=0.016) a previous history of bladder cancer. Ureter Tumor biopsy (p=0.272) and Ureter involvement (p=0.743) were not associated with the rate of intravesical recurrence in this study. Multivariate Cox regression analysis showed that only bladder cancer history (p
Miguel Srougi - One of the best experts on this subject based on the ideXlab platform.
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Analysis of the Clinicopathological Characteristics of Patients with Upper Urinary Tract Transitional Cell Carcinoma
Clinics, 2008Co-Authors: Claudio Bovolenta Murta, Alberto A. Antunes, Marcos F. Dall'oglio, Alcides Mosconi, Katia R. M. Leite, Miguel SrougiAbstract:OBJECTIVE: To describe the clinicopathological characteristics of patients with upper urinary tract transitional cell carcinomas who are treated surgically and to analyze the occurrence of bladder Tumors as well as the development of metastases outside the urinary tract. MATERIALS AND METHODS: The study comprised a retrospective analysis of 25 patients treated between February 1994 and August 2006. The variables analyzed were: patient age, gender, and clinical presentation; diagnostic methods; pathologic characteristics at the primary site of the Tumor (pelvis or Ureter); Tumor stage and grade; and presence of carcinoma in situ, microvascular invasion and squamous differentiation. The Kaplan-Meier method and the Log-Rank test were used for statistical analysis of bladder recurrence-free survival. RESULTS: Eighty-four percent of patients were male, and macroscopic hematuria was the most common clinical presentation. The majority of cases (56%) were infiltrative (T2-T3) and high-grade (76%) Tumors. Synchronous or metachronous bladder Tumors were found in 72% of cases. Five (20%) patients had a history of bladder Tumor before the diagnosis of upper urinary tract transitional cell carcinomas. The mean follow-up period was 36 months (range: 1.5 to 156). During the follow-up period, eleven (44%) patients developed bladder Tumors. After five years, the probability of being free of bladder Tumor recurrence was 40%. No pathological variable was predictive for bladder Tumor recurrence. Four patients presented disease recurrence outside the urinary tract. CONCLUSIONS: The presence of metachronous bladder Tumors is more often observed after the diagnosis of upper urinary tract transitional cell carcinomas. All of these patients should undergo rigorous follow-up during the postoperative period. Only patients with infiltrative and high-grade Tumors developed metastases outside the urinary tract.
Yuan Tso Cheng - One of the best experts on this subject based on the ideXlab platform.
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Diagnostic Ureteroscopy Independently Correlates with Intravesical Recurrence after NephroUreterectomy for Upper Urinary Tract Urothelial Carcinoma
Annals of Surgical Oncology, 2013Co-Authors: Chih Hsiung Kang, Yen Ta Chen, Yao Chi Chuang, Yuan Tso Cheng, Po Hui ChiangAbstract:Background Little is known about the effects of diagnostic Ureteroscopy on intravesical recurrence after nephroUreterectomy. Methods This study was designed to determine the effect of diagnostic Ureteroscopy on intravesical recurrence after nephroUreterectomy. From 2004 to 2010, 446 patients underwent nephroUreterectomy for upper urinary tract cancer at our tertiary medical center. We included 115 patients who underwent preoperative diagnostic Ureteroscopy and 281 patients who did not. This study analyzed the impact of the reported risk factors and diagnostic Ureteroscopy for intravesical recurrence after nephroUreterectomy by multivariate Cox regression model. Results The rates of metastasis and cancer-specific mortality did not differ significantly between the two groups. Diagnostic Ureteroscopy was associated with a higher incidence of intravesical recurrence in patients with ( p = 0.02) and without ( p = 0.016) a previous history of bladder cancer. Ureter Tumor biopsy ( p = 0.272) and Ureter involvement ( p = 0.743) were not associated with the rate of intravesical recurrence in this study. Multivariate Cox regression analysis showed that only bladder cancer history ( p
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Diagnostic Ureteroscopy independently correlates with intravesical recurrence after nephroUreterectomy for upper urinary tract urothelial carcinoma.
Annals of Surgical Oncology, 2013Co-Authors: Chih Hsiung Kang, Yen Ta Chen, Yao Chi Chuang, Yuan Tso Cheng, Po Hui ChiangAbstract:BACKGROUND: Little is known about the effects of diagnostic Ureteroscopy on intravesical recurrence after nephroUreterectomy. METHODS: This study was designed to determine the effect of diagnostic Ureteroscopy on intravesical recurrence after nephroUreterectomy. From 2004 to 2010, 446 patients underwent nephroUreterectomy for upper urinary tract cancer at our tertiary medical center. We included 115 patients who underwent preoperative diagnostic Ureteroscopy and 281 patients who did not. This study analyzed the impact of the reported risk factors and diagnostic Ureteroscopy for intravesical recurrence after nephroUreterectomy by multivariate Cox regression model. RESULTS: The rates of metastasis and cancer-specific mortality did not differ significantly between the two groups. Diagnostic Ureteroscopy was associated with a higher incidence of intravesical recurrence in patients with (p=0.02) and without (p=0.016) a previous history of bladder cancer. Ureter Tumor biopsy (p=0.272) and Ureter involvement (p=0.743) were not associated with the rate of intravesical recurrence in this study. Multivariate Cox regression analysis showed that only bladder cancer history (p
Yao Chi Chuang - One of the best experts on this subject based on the ideXlab platform.
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Diagnostic Ureteroscopy Independently Correlates with Intravesical Recurrence after NephroUreterectomy for Upper Urinary Tract Urothelial Carcinoma
Annals of Surgical Oncology, 2013Co-Authors: Chih Hsiung Kang, Yen Ta Chen, Yao Chi Chuang, Yuan Tso Cheng, Po Hui ChiangAbstract:Background Little is known about the effects of diagnostic Ureteroscopy on intravesical recurrence after nephroUreterectomy. Methods This study was designed to determine the effect of diagnostic Ureteroscopy on intravesical recurrence after nephroUreterectomy. From 2004 to 2010, 446 patients underwent nephroUreterectomy for upper urinary tract cancer at our tertiary medical center. We included 115 patients who underwent preoperative diagnostic Ureteroscopy and 281 patients who did not. This study analyzed the impact of the reported risk factors and diagnostic Ureteroscopy for intravesical recurrence after nephroUreterectomy by multivariate Cox regression model. Results The rates of metastasis and cancer-specific mortality did not differ significantly between the two groups. Diagnostic Ureteroscopy was associated with a higher incidence of intravesical recurrence in patients with ( p = 0.02) and without ( p = 0.016) a previous history of bladder cancer. Ureter Tumor biopsy ( p = 0.272) and Ureter involvement ( p = 0.743) were not associated with the rate of intravesical recurrence in this study. Multivariate Cox regression analysis showed that only bladder cancer history ( p
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Diagnostic Ureteroscopy independently correlates with intravesical recurrence after nephroUreterectomy for upper urinary tract urothelial carcinoma.
Annals of Surgical Oncology, 2013Co-Authors: Chih Hsiung Kang, Yen Ta Chen, Yao Chi Chuang, Yuan Tso Cheng, Po Hui ChiangAbstract:BACKGROUND: Little is known about the effects of diagnostic Ureteroscopy on intravesical recurrence after nephroUreterectomy. METHODS: This study was designed to determine the effect of diagnostic Ureteroscopy on intravesical recurrence after nephroUreterectomy. From 2004 to 2010, 446 patients underwent nephroUreterectomy for upper urinary tract cancer at our tertiary medical center. We included 115 patients who underwent preoperative diagnostic Ureteroscopy and 281 patients who did not. This study analyzed the impact of the reported risk factors and diagnostic Ureteroscopy for intravesical recurrence after nephroUreterectomy by multivariate Cox regression model. RESULTS: The rates of metastasis and cancer-specific mortality did not differ significantly between the two groups. Diagnostic Ureteroscopy was associated with a higher incidence of intravesical recurrence in patients with (p=0.02) and without (p=0.016) a previous history of bladder cancer. Ureter Tumor biopsy (p=0.272) and Ureter involvement (p=0.743) were not associated with the rate of intravesical recurrence in this study. Multivariate Cox regression analysis showed that only bladder cancer history (p
