Publications by authors named "Gideon Richards"
Background And Objectives: Natural-orifice approaches for nephrectomy have included access via the stomach, vagina, bladder, and rectum. Recently, the feasibility of using the ureter as a natural orifice for natural-orifice transluminal endoscopic surgery nephrectomy has been demonstrated in a nonsurvival porcine model. The purpose of this study was to assess the outcomes of transureteral laparoscopic natural-orifice transluminal endoscopic surgery nephrectomy in a survival porcine model.
View Article and Find Full Text PDFIntroduction: Sonoelastography is an emerging ultrasound-based technique that allows characterization of tissue stiffness.
Aim: The aim of this report is to present a case of significant penile curvature with a non-palpable, non-sonographically visualized plaque that was demonstrable with sonoelastography.
Methods: A 60-year-old male presented with significant left penile curvature during erections.
Purpose: The purpose of this study was to evaluate the amount of radiation exposure patients with small renal masses undergoing percutaneous cyroablation (PCA) or percutaneous radiofrequency ablation (PRFA) received during treatment and follow up.
Materials And Methods: A retrospective review was conducted on all patients with small renal masses <4 cm treated with PCA or PRFA over a 7-year period in a single academic center. Preoperative, operative, and post-operative variables were collected and compared.
Unlabelled: Abstract Background and Purpose: Previous studies using pulsed fluoroscopy have shown variable effects on radiation exposure because of the ramp and trail effect in older C-arm systems. This study compares radiation delivered in pulsed and continuous modalities using a modern C-arm system.
Materials And Methods: Thermoluminescent dosimeters (TLDs) positioned in three body locations directly measured radiation dose during simulated ureteroscopy.
Purpose: Low dose computerized tomography protocols have demonstrated a reduction in radiation exposure while maintaining excellent sensitivity and specificity in the detection of stones in patients of average size. Low dose computerized tomography protocols have not yet been evaluated in subjects in the extremes of weight. We evaluated the effect of body weight when using low dose protocols to detect ureteral calculi.
View Article and Find Full Text PDFArticle Synopsis
- - The study aimed to establish age-specific reference ranges for prostate-specific antigen (PSA) levels in patients with end-stage renal disease (ESRD) and investigate prostate cancer detection rates at different PSA levels.
- - Researchers reviewed records of 775 male ESRD patients and found that PSA levels for specific age groups were higher compared to the general population, with significant detection rates for prostate cancer at various PSA intervals.
- - The findings suggest that patients with ESRD have a unique PSA profile and a higher cancer detection rate than those with normal kidney function, highlighting the need for tailored screening approaches.