Publications by authors named "George K Chow"
Purpose: Conversions from partial to radical nephrectomy are uncommon and reports on this topic are rare. In this study we present a detailed analysis of conversions from partial to radical nephrectomy in a single-institutional contemporary experience and provide an analysis of preoperative risk factors.
Materials And Methods: Patients who underwent converted (cases) and completed (controls) partial nephrectomy from 2000 to 2015 were matched 1:1 for analysis.
Article Synopsis
- - This study analyzed complications from hand-assisted laparoscopic living donor nephrectomy (HALLDN) over 20 years, focusing on issues arising within 120 days post-surgery, using the Clavien-Dindo classification system.
- - Out of 3,002 donors, 12.4% experienced complications, with a significant 76% of these occurring after hospital discharge; reoperation was necessary for 1.8% of cases, mainly due to incision-related issues.
- - Risk factors for complications included paramedian incision, prior abdominal surgeries, male sex, non-White race, and earlier surgical experiences, highlighting the need for close monitoring of patients post-discharge.
Objective: To assess the frequency of renal transplantation in patients rendered surgically anephric during treatment of renal cancers as well as the clinicopathologic factors associated with receipt of transplantation.
Methods: A retrospective review was conducted to identify patients rendered surgically anephric between 2001 and 2016 due to cancer in both renal units or cancer in an anatomically or functionally solitary kidney. Patient demographics, comorbidities, and cancer features were compared between patients who subsequently received a renal transplantation and those who did not.
Objective: To evaluate the long-term outcomes and potential predictors of treatment failure after robotic sacrocolpopexy.
Methods: We identified 70 consecutive patients from 2002 to 2012 with symptomatic post-hysterectomy vaginal vault prolapse that underwent robotic sacrocolpopexy. Multiple clinical and surgical variables were evaluated for potential association with treatment failure, which was defined as any repeat operation for recurrent prolapse or mesh-related complications.
Objective: To evaluate for potential predictors of intraoperative conversion from robotic sacrocolpopexy (RSC) to open abdominal sacrocolpopexy.
Patients And Methods: We identified 83 consecutive patients from 2002-2012 with symptomatic high-grade post-hysterectomy vaginal vault prolapse that underwent RSC. Multiple clinical variables including patient age, comorbidities (body-mass index [BMI], hypertension, diabetes mellitus, tobacco use), prior intra-abdominal surgery and year of surgery were evaluated for potential association with conversion.
Background: Sarcoid-like reactions have been reported and confirmed by histopathology in patients with malignant disease. This series demonstrates the complex relationship of malignancy and sarcoidosis as pertaining to the eye, which, to the best of our knowledge, has not been previously reported in the literature.
Methods: Retrospective case study of five patients with sarcoid-like reactions.
Background: The acceptance criteria used for living kidney donors are largely theoretical, as they are not clearly linked to outcomes. The goal of this study was to use implantation biopsies as a surrogate outcome marker to evaluate our living kidney donor selection criteria.
Methods: One thousand six hundred sequential living kidney donor biopsies were performed between 2001 and 2011.
Background: The use of kidneys with multiple renal arteries (MRA) and right kidneys procured laparoscopically for living donor kidney transplantation (LDKT) remains controversial. We aimed to evaluate the short- and long-term outcomes of recipients of LDKT using laparoscopically procured MRA and right kidneys.
Study Design: We reviewed the medical records of all LDKT recipients with laparoscopically procured kidneys from 2000 to 2009.
Objective: The purpose of this article is to compare the efficacy and complication rates of percutaneous radiofrequency ablation (RFA) and cryoablation in the treatment of renal masses measuring 3.0 cm and smaller.
Materials And Methods: A retrospective review was performed of 385 patients with 445 tumors measuring 3.
Pelvic organ prolapse is a common problem faced by many women, resulting in significant morbidity and negatively impacting quality of life. Sacrocolpopexy can treat women with vaginal vault prolapse, multicompartment prolapse, and/or a history of failed prolapse procedures. The transabdominal sacrocolpopexy has been shown, on multiple studies, to have one of the highest long-term success rates for repair of severe vault prolapse.
View Article and Find Full Text PDFPurpose: The relative effectiveness of partial vs radical nephrectomy remains unclear in light of the recent phase 3 European Organization for the Research and Treatment of Cancer trial. We performed a systematic review and meta-analysis of partial vs radical nephrectomy for localized renal tumors, considering all cause and cancer specific mortality, and severe chronic kidney disease.
Materials And Methods: Cochrane Central Register of Controlled Trials, MEDLINE®, EMBASE®, Scopus and Web of Science® were searched for sporadic renal tumors that were surgically treated with partial or radical nephrectomy.
Purpose: To review complications related to percutaneous renal tumor ablation.
Materials And Methods: Prospectively collected data related to renal radiofrequency (RF) ablation and cryoablation procedures performed from May 2000 through November 2010 were reviewed. This included 573 renal ablation procedures performed in 533 patients to treat 633 tumors.
We describe efficacy and safety of robotic-assisted laparoscopic vaginal vault prolapse repair with long-term follow-up. We reviewed the records of 40 consecutive patients with posthysterectomy vaginal vault prolapse who underwent a robotic-assisted laparoscopic sacrocolpopexy at our institution between September 2002 and September 2006. Patient analysis focused on complications, patient satisfaction, and morbidity, with a minimum of 36 months' follow-up.
View Article and Find Full Text PDFPurpose: We retrospectively determined the efficacy of percutaneous renal cryoablation based on a mean followup of more than 2 years.
Materials And Methods: Institutional review board approval was obtained for this Health Insurance Portability and Accountability Act compliant retrospective study. Informed consent was waived.
Purpose: To evaluate our single institution experience with percutaneous cryoablation of renal masses >or=3 cm in diameter for complications and short-term outcomes.
Patients And Methods: Between March 2003 and February 2009, 108 patients with 110 renal masses >or=3 cm in diameter were treated with percutaneous cryoablation therapy. Technical success of the ablation procedure, complications, and evidence for local tumor recurrence were evaluated for each patient.
Purpose: Transureteroureterostomy is a treatment alternative for ureteral obstruction when more conventionally reconstructive techniques are not feasible. We report on long-term outcomes of patients treated with transureteroureterostomy.
Materials And Methods: A retrospective chart review of all patients treated with transureteroureterostomy from January of 1985 to February of 2007 was performed.
Objectives: To determine whether iatrogenic immunosuppression used after transplantation infers a poor prognosis of renal cell carcinoma (RCC) as natural negative immune regulators have been associated with decreased cancer-specific survival from RCC.
Methods: All patients with a solid organ transplant who underwent radical nephrectomy or nephron-sparing surgery for nonhereditary sporadic RCC from 1970 to 2003 were identified and retrospectively reviewed.
Results: We identified 17 patients with surgically treated rcc who also underwent a solid organ transplant: 11 with transplant before RCC and 6 with transplant after RCC.
Renal oncocytoma is a benign tumor occurring singly or as multiple synchronous lesions. The histologic features of renal oncocytoma may overlap with those of chromophobe renal cell carcinoma. Chromosomal translocations involving the CCND1 locus at 11q13 and overexpression of cyclin D1 occur in a subset of renal oncocytomas.
View Article and Find Full Text PDFObjectives: Radiofrequency ablation (RFA) is a minimally invasive therapy aimed at maximal preservation of renal function in the nonsurgical renal mass patient. We evaluate our experience with RFA of renal tumors in the solitary kidney.
Patients And Methods: A retrospective review of all patients with a solitary kidney treated with RFA for renal mass was performed.
Purpose: We determined technical feasibility, safety and short-term outcomes following percutaneous renal cryoablation.
Materials And Methods: We performed a retrospective review of 115 renal tumors in 110 patients treated with percutaneous cryoablation. Specific attention was directed to tumor characteristics, hospital course, complications, technical success and treatment success based on followup imaging.
Purpose: To retrospectively determine the safety and effectiveness of percutaneous cryoablation, monitored with computed tomography (CT), for the treatment of solid renal masses.
Materials And Methods: This study was compliant with the Health Insurance Portability and Accountability Act and had institutional review board approval; informed consent was waived. From March 12, 2003, through August 4, 2005, 23 men and 17 women (mean age, 76 years +/- 9.