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https://www.readbyqxmd.com/read/28735201/ultrasound-elastography-of-the-prostate-using-an-unconstrained-modulus-reconstruction-technique-a-pilot-clinical-study
#1
REVIEW
Seyed Reza Mousavi, Hassan Rivaz, Gregory J Czarnota, Abbas Samani, Ali Sadeghi-Naini
A novel full-inversion-based technique for quantitative ultrasound elastography was investigated in a pilot clinical study on five patients for non-invasive detection and localization of prostate cancer and quantification of its extent. Conventional-frequency ultrasound images and radiofrequency (RF) data (~5 MHz) were collected during mechanical stimulation of the prostate using a transrectal ultrasound probe. Pre and post-compression RF data were used to construct the strain images. The Young's modulus (YM) images were subsequently reconstructed using the derived strain images and the stress distribution estimated iteratively using finite element (FE) analysis...
July 20, 2017: Translational Oncology
https://www.readbyqxmd.com/read/28735020/pilot-study-of-prostate-cancer-angiogenesis-imaging-using-a-photoacoustic-imaging-system
#2
Akio Horiguchi, Masayuki Shinchi, Akiko Nakamura, Takatsugu Wada, Keiichi Ito, Tomohiko Asano, Hiroshi Shinmoto, Hitoshi Tsuda, Miya Ishihara
OBJECTIVES: To investigate a link between the appearance of photoacoustic imaging (PAI) and microvasculature in prostate cancer and to assess the feasibility of PAI for angiogenesis imaging in prostate cancer. METHODS: We have developed a PAI system equipped with a transrectal ultrasound (TRUS) type probe. Three patients who underwent PAI just before prostate biopsy and subsequently underwent radical prostatectomy were included. The PAI appearance was retrospectively reviewed and in each case four representative areas were selected: one with high PAI signal intensity, one with low PAI signal intensity, one peripheral to the index tumor, and one inside the index tumor...
July 19, 2017: Urology
https://www.readbyqxmd.com/read/28735016/timing-of-psa-nadir-after-radical-prostatectomy-and-risk-of-biochemical-recurrence
#3
Stephanie L Skove, Lauren E Howard, William J Aronson, Martha K Terris, Christopher J Kane, Christopher L Amling, Matthew R Cooperberg, Daniel M Moreira, Stephen J Freedland
OBJECTIVES: To evaluate the association between PSA nadir level and time to nadir (TTN) with biochemical recurrence (BCR) risk after radical prostatectomy (RP) in the SEARCH database. METHODS: Retrospective analysis of 1,939 men from the SEARCH database treated with RP between 1998-2015 with available ultrasensitive PSA nadir within 1-6 months after RP. Uni- and multivariable analyses of PSA nadir and TTN with time from nadir to BCR were done with Cox models (adjusted for demographics, tumor features and preoperative PSA)...
July 19, 2017: Urology
https://www.readbyqxmd.com/read/28734596/developments-in-urologic-oncology-%C3%A2-oncoforum%C3%A2-the-best-of-2016
#4
F Gómez-Veiga, A Alcaraz-Asensio, J Burgos-Revilla, J M Cózar-Olmo
OBJECTIVE: To put forth new findings of urologic oncology with impact on clinical practice presented during 2016 in the main annual meetings. ACQUISITION OF EVIDENCE: This document reviews abstracts on prostate, kidney and bladder cancer presented at the congresses of 2016 (EAU, AUA, ASCO, ESMO and ASTRO) and publications with the highest impact in this period valued with the highest scores by the OncoForum committee. SYNTHESIS OF EVIDENCE: In High-Risk Renal-Cell carcinoma after nephrectomy, disease-free survival was significantly greater for sunitinib than placebo group, with adverse events more frequents...
July 19, 2017: Actas Urologicas Españolas
https://www.readbyqxmd.com/read/28734080/transumbilical-laparoendoscopic-single-site-radical-prostatectomy-and-cystectomy-with-the-aid-of-transurethral-port-a-feasibility-study
#5
Jian Su, Qingyi Zhu, Lin Yuan, Yang Zhang, Qingling Zhang, Yunfei Wei
OBJECTIVE: Our aim was to describe the surgical technique and report early outcomes of transurethral assisted laparoendoscopic single-site radical prostatectomy (LESS-RP) and cystectomy (LESS-RC) in a single institution. MATERIALS AND METHODS: Between December 2014 and March 2016, 114 cases were performed LESS-RP and LESS-RC, including LESS-RP (n=68), LESS-RC with cutaneous ureterostomy (LESS-RC/CU) (n=38) and LESS-RC with orthotopic ileal neobladder (LESS-RC/OIN) (n=8)...
July 22, 2017: BJU International
https://www.readbyqxmd.com/read/28733443/direct-metabolic-interrogation-of-dihydrotestosterone-biosynthesis-from-adrenal-precursors-in-primary-prostatectomy-tissues
#6
Charles Dai, Yoon-Mi Chung, Evan Kovac, Ziqi Zhu, Jianneng Li, Cristina Magi-Galluzzi, Andrew J Stephenson, Eric A Klein, Nima Sharifi
Purpose: A major mechanism of castration-resistant prostate cancer (CRPC) involves intratumoral biosynthesis of dihydrotestosterone (DHT) from adrenal precursors. We have previously shown that adrenal-derived androstenedione (AD) is the preferred substrate over testosterone (T) for 5α-reductase expressed in metastatic CRPC, bypassing T as an obligate precursor to DHT. However, the metabolic pathway of adrenal-derived DHT biosynthesis has not been rigorously investigated in the setting of primary disease in the prostate...
July 21, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28733200/hypothermic-cooling-measured-by-thermal-mri-imaging-feasibility-and-implications-for-virtual-imaging-in-the-urogenital-pelvis
#7
Douglas Skarecky, Hon Yu, Jennifer Linehan, Blanca Morales, Min-Ying Su, Peter Fwu, Thomas Ahlering
OBJECTIVE: To study the combination of thermal MRI imaging and novel hypothermic cooling, via an Endorectal Cooling Balloon (ECB) to assess the effective dispersion and temperature drop in pelvic tissue to potentially reduce inflammatory cascade in surgical applications. METHODS: Three male subjects, prior to undergoing robot-assisted radical prostatectomy (RARP), were cooled via an ECB, rendered MRI compatible by for patient safety Prior to ECB hypothermia. MRI studies were performed using a 3T scanner and included T2w anatomical scan for the pelvic structures, followed by a temperature mapping scan...
July 18, 2017: Urology
https://www.readbyqxmd.com/read/28732186/assessing-the-impact-of-surgeon-experience-on-urinary-continence-recovery-after-robot-assisted-radical-prostatectomy-results-of-four-high-volume-surgeons
#8
Nicola Fossati, Ettore Di Trapani, Giorgio Gandaglia, Paolo Dell'Oglio, Paolo Umari, Nicolò Maria Buffi, Giorgio Guazzoni, Alexander Mottrie, Franco Gaboardi, Francesco Montorsi, Alberto Briganti, Nazareno Suardi
PURPOSE: To test the impact of surgeon experience on urinary continence (UC) recovery after robot-assisted radical prostatectomy (RARP). MATERIALS AND METHODS: The study included 1477 consecutive patients treated with RARP by four surgeons between 2006 and 2014. UC recovery was defined as being completely dry over a 24-hour period at follow-up. Surgeon experience was coded as the total number of RARP performed by the surgeon before the patient's operation. Multivariable analysis tested the association between surgeon experience and UC recovery...
July 21, 2017: Journal of Endourology
https://www.readbyqxmd.com/read/28731489/sexual-health-adherence-to-mediterranean-diet-body-weight-physical-activity-and-mental-state-factors-correlated-to-each-other
#9
Pier A Della Camera, Simone Morselli, Gianmartin Cito, Giovanni Tasso, Andrea Cocci, Nicola Laruccia, Fabrizio Travaglini, Dario Del Fabbro, Antonio R Mottola, Mauro Gacci, Sergio Serni, Marco Carini, Alessandro Natali
INTRODUCTION: Mediterranean diet has shown a protective role against cardiovascular disease, diabetes, cancer onset, microvascular damage and dementia in many trials. Our purpose is the assessment of a correlation between physical activity, Mediterranean diet, body mass index (BMI), depression and erection disorder (ED). METHODS: After having signed disclaimer to the study participation, we administered the IIEF 15 questionnaire (International Index of Erectil Function), the Hamilton questionnaire for major depression, the Med-Diet Questionnaire, the Ipaq Questionnaire (International Index of Physical Activity) to 245 patients and calculated the BMI...
July 14, 2017: Urologia
https://www.readbyqxmd.com/read/28728994/a-comprehensive-analysis-of-cribriform-morphology-on-mr-us-fusion-biopsy-correlated-with-radical-prostatectomy-specimens
#10
Matthew Truong, Changyong Feng, Gary Hollenberg, Eric Weinberg, Edward M Messing, Hiroshi Miyamoto, Thomas P Frye
PURPOSE: Recently, a large body of evidence has emerged recognizing that cribriform morphology is an aggressive prostate cancer morphological pattern associated with higher cancer-specific mortality. In a comprehensive analysis, we compared traditional and contemporary prostate biopsy techniques for detection of prostate cancer with cribriform morphology and used radical prostatectomy as a reference standard. MATERIALS AND METHODS: A retrospectively maintained single institution multiparametric MRI (mpMRI) database (n = 1,001) was queried to identify 240 patients who underwent MR/US fusion targeted biopsy (TB) and concurrent systematic biopsy (SB) from December 2014 to December 2016...
July 17, 2017: Journal of Urology
https://www.readbyqxmd.com/read/28728989/caution-with-use-of-the-expanded-prostate-cancer-index-composite-50-urinary-bother-scale-how-voiding-dysfunction-modifies-its-performance
#11
Lin Yang, Adam S Kibel, Graham A Colditz, Ratna Pakpahan, Kellie R Imm, Sonya Izadi, Robert L Grubb, Kathleen Y Wolin, Siobhan Sutcliffe
PURPOSE: We evaluated the agreement between patient-reported urinary function and bother, and sexual function and bother in radical prostatectomy (RP) patients to help inform possible non-functional, modifiable mechanisms for patient bother. METHODS: Patients were recruited from 2011-2014 at Washington University and Brigham & Women's Hospital. Urinary and sexual outcomes were assessed by the Expanded Prostate Cancer Index Composite-50 (EPIC-50) before, five weeks, and 12 months after RP...
July 17, 2017: Journal of Urology
https://www.readbyqxmd.com/read/28727374/dipyridamole-reduces-penile-apoptosis-in-a-rat-model-of-post-prostatectomy-erectile-dysfunction
#12
Omer Kutlu, Ersagun Karaguzel, Ali Ertan Okatan, Ahmet Mentese, Esin Yulug, Ilke Onur Kazaz, Selcuk Kutlu, Eyup Dil, Huseyin Eren, Ahmet Alver
PURPOSE: Despite the nerve-sparing technique, many patients suffer from erectile dysfunction after radical prostatectomy (RP) due to cavernous nerve injury. The aim of this study was to evaluate dipyridamole as a potential treatment agent of post-radical prostatectomy erectile dysfunction. MATERIAL AND METHODS: A total of 18 male Sprague-Dawley rats were randomized into three experimental Groups (SHAM+DMSO, BCNI+DMSO and BCNI+DIP). An animal model of bilateral cavernous nerve crush injury (BCNI) was established to mimic the partial nerve damage during nerve-sparing RP...
June 14, 2017: International Braz J Urol: Official Journal of the Brazilian Society of Urology
https://www.readbyqxmd.com/read/28727367/prospective-evaluation-of-vesicourethral-anastomosis-outcomes-in-robotic-radical-prostatectomy-during-early-experience-in-a-university-hospital
#13
Lucas Medeiros Burttet, Gabrielle Aguiar Varaschin, Andre Kives Berger, Leandro Totti Cavazzola, Milton Berger, Brasil Silva
PURPOSE: Robotic assisted radical prostatectomy (RARP) presents challenges for the surgeon, especially during the initial learning curve. We aimed to evaluate early and mid-term functional outcomes and complications related to vesicourethral anastomosis (VUA), in patients who underwent RARP, during the initial experience in an academic hospital. We also assessed possible predictors of postoperative incontinence and compared these results with the literature. MATERIALS AND METHODS: We prospectively collected data from consecutive patients that underwent RARP...
June 14, 2017: International Braz J Urol: Official Journal of the Brazilian Society of Urology
https://www.readbyqxmd.com/read/28727136/a-multidimensional-view-of-racial-differences-in-access-to-prostate-cancer-care
#14
Craig Evan Pollack, Katrina A Armstrong, Nandita Mitra, Xinwei Chen, Katelyn R Ward, Archana Radhakrishnan, Michelle S Wong, Justin E Bekelman, Charles C Branas, Karin V Rhodes, David T Grande
BACKGROUND: Racial disparities in prostate cancer treatment and outcomes are widespread and poorly understood. In the current study, the authors sought to determine whether access to care, measured across multiple dimensions, contributed to racial differences in prostate cancer. METHODS: The Philadelphia Area Prostate Cancer Access Study (P(2) Access) included 2374 men diagnosed with localized prostate cancer between 2012 and 2014. Men were surveyed to assess their experiences accessing care (response rate of 51...
July 20, 2017: Cancer
https://www.readbyqxmd.com/read/28726251/effect-of-radical-prostatectomy-on-levels-of-cancer-related-epitopes-in-circulating-macrophages-of-patients-with-clinically-localized-prostate-cancer
#15
Tilman Todenhöfer, Jörg Hennenlotter, Gabriel Keller, Tim Neumann, Arnulf Stenzl, Jens Bedke
OBJECTIVE: Epitopes of the apoptosis related protein DNaseX (Apo10) and the pentose-phosphate-pathway associated protein transketolase-like 1 (TKTL1) have been shown to be increased in circulating macrophages of patients with different cancer types including prostate cancer (PC). So far, the effect of cancer-specific therapies on the levels of these markers in blood samples of patients with PC has not been evaluated yet. The aim of the present study was to prospectively assess the effect of surgical removal of the prostate on levels of Apo10 and TKTL1 in blood macrophages using Epitope Detection In Monocytes (EDIM)...
July 20, 2017: Prostate
https://www.readbyqxmd.com/read/28726241/investigating-the-role-of-the-igf-axis-as-a-predictor-of-biochemical-recurrence-in-prostate-cancer-patients-post-surgery
#16
Kieran J Breen, Amanda O'Neill, Lisa Murphy, Yue Fan, Susie Boyce, Noel Fitzgerald, Emma Dorris, Lauren Brady, Stephen P Finn, Brian D Hayes, Ann Treacy, Ciara Barrett, Mardiana Abdul Aziz, Elaine W Kay, John M Fitzpatrick, R William G Watson
BACKGROUND: Between 20% and 35% of prostate cancer (PCa) patients who undergo treatment with curative intent (ie, surgery or radiation therapy) for localized disease will experience biochemical recurrence (BCR). Alterations in the insulin-like growth factor (IGF) axis and PTEN expression have been implicated in the development and progression of several human tumors including PCa. We examined the expression of the insulin receptor (INSR), IGF-1 receptor (IGF-1R), PTEN, and AKT in radical prostatectomy tissue of patients who developed BCR post-surgery...
July 20, 2017: Prostate
https://www.readbyqxmd.com/read/28725591/diffusion-weighted-imaging-of-the-prostate-principles-application-and-advances
#17
REVIEW
Martin H Maurer, Johannes T Heverhagen
This review article aims to provide an overview on the principles of diffusion-weighted magnetic resonance imaging (DW-MRI) and its applications in the imaging of the prostate. DW-MRI with regards to different applications for prostate cancer (PCa) detection and characterization, local staging as well as for active surveillance (AS) and tumor recurrence after radical prostatectomy (RP) will be discussed. Furthermore, advances in DW-MRI techniques like diffusion kurtosis imaging (DKI) will be presented.
June 2017: Translational Andrology and Urology
https://www.readbyqxmd.com/read/28723518/mid-term-outcomes-following-salvage-lymph-node-dissection-for-prostate-cancer-nodal-recurrence-status-post-radical-prostatectomy
#18
Fabio Zattoni, Avinash Nehra, Christopher R Murphy, Laureano Rangel, Lance Mynderse, Val Lowe, Eugene Kwon, R Jeffrey Karnes
BACKGROUND: Patients with oligometastatic prostate cancer lymph node recurrence can be treated with many options including salvage lymph node dissection (sLND). OBJECTIVE: Evaluation of outcomes of sLND and identification of clinicopathologic features in predicting further biochemical and radiological relapse after sLND for prostate cancer. DESIGN, SETTING, AND PARTICIPANTS: Between November 1, 2009 and March 31, 2015, 117 patients with biochemical recurrence (BCR) after radical prostatectomy (RP) underwent sLND by a single surgeon after a standardized 11C-choline positron emission tomography/computed tomography...
December 2016: European Urology Focus
https://www.readbyqxmd.com/read/28723512/palliative-radical-cysto-prostatectomy-for-locally-advanced-symptomatic-castration-resistant-prostate-cancer
#19
Axel Heidenreich
Palliative radical (cysto-)prostatectomy is associated with a median symptom-free survival which covers 75-80% of the remaining lifetime in patients with symptomatic locally advanced castration-resistant prostate cancer.
December 2016: European Urology Focus
https://www.readbyqxmd.com/read/28723511/fit-patient-with-nonmetastatic-castration-resistant-prostate-cancer-lower-urinary-tract-symptoms-and-severe-recurrent-haematuria
#20
Nuradh Joseph, Ananya Choudhury
For biochemical relapse in patients with nonmetastatic castration-resistant prostate cancer previously treated with androgen deprivation alone, external beam radiotherapy to the primary tumour and the pelvic lymph nodes is preferable to radical prostatectomy with lymphadenectomy.
December 2016: European Urology Focus
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