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Nephrometry

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https://www.readbyqxmd.com/read/28941921/external-validation-of-contact-surface-area-as-a-predictor-of-post-operative-renal-function-in-patients-undergoing-partial-nephrectomy
#1
Miki Haifler, Benjamin T Ristau, Andrew M Higgins, Marc C Smaldone, Alexander Kutikov, Amnon Zisman, Robert G Uzzo
PURPOSE: To externally validate a mathematical formula for tumor contact surface area (CSA) as a predictor of post-operative renal function in patients undergoing partial nephrectomy for renal cell carcinoma. MATERIALS AND METHODS: A prospectively maintained kidney cancer database was queried for patients who underwent partial nephrectomy between 2014 and 2016. CSA was calculated using data obtained from pre-operative cross sectional imaging. The correlation between CSA and peri-operative variables was examined...
September 20, 2017: Journal of Urology
https://www.readbyqxmd.com/read/28941919/local-tumor-bed-recurrence-following-partial-nephrectomy-in-patients-with-small-renal-masses
#2
Erika L Wood, Mehrad Adibi, Wei Qiao, Jessica Brandt, Miao Zhang, Pheroze Tamboli, Surena F Matin, Christopher G Wood, Jose A Karam
PURPOSE: To examine the incidence, characteristics, and management of patients who had tumor bed recurrence after partial nephrectomy. PATIENTS AND METHODS: We retrospectively reviewed the charts of 2,256 patients with sporadic small renal masses undergoing partial nephrectomy between 2000 and 2014. Local tumor bed recurrence was strictly defined as either: 1) detection of a new enhancing lesion specifically within the surgical defect or 2) detection of a new enhancing lesion within the same region (e...
September 20, 2017: Journal of Urology
https://www.readbyqxmd.com/read/28875952/role-of-r-e-n-a-l-nephrometry-score-in-laparoscopic-partial-nephrectomy
#3
Hai-Jiang Zhou, Yong Yan, Jian-Zhong Zhang, Li-Rong Liang, Shu-Bin Guo
Background: Preoperative anatomical scoring system is conducive to comparison between treatment options and evaluation of postoperative outcomes in patients with small renal tumors. This study aimed to evaluate the clinical application efficacy of the R.E.N.A.L. nephrometry score (RNS) in predicting perioperative outcomes in patients with renal tumor who underwent laparoscopic partial nephrectomy (LPN). Methods: The clinical data of 139 patients with renal tumors who underwent LPN between 2009 and 2015 were collected and analyzed...
September 20, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28861728/off-clamp-robot-assisted-partial-nephrectomy-does-not-benefit-short-term-renal-function-a-matched-cohort-analysis
#4
Barrett G Anderson, Aaron M Potretzke, Kefu Du, Joel Vetter, R Sherburne Figenshau
In the interest of renal functional preservation, partial nephrectomy has supplanted radical nephrectomy as the preferred treatment for T1 renal masses. This procedure usually involves the induction of renal warm ischemia by clamping the hilar vessels prior to tumor excision. Performing robot-assisted partial nephrectomy (RAPN) "off-clamp" can theoretically prevent renal functional loss associated with warm ischemia. We describe our institutional experience and compare perioperative and renal functional outcomes using a propensity score matched cohort...
August 31, 2017: Journal of Robotic Surgery
https://www.readbyqxmd.com/read/28844831/percutaneous-cryoablation-of-renal-tumors-is-it-time-for-a-new-paradigm%C3%A2-shift
#5
Hussein D Aoun, Peter J Littrup, Mohamed Jaber, Fatima Memon, Barbara Adam, Mark Krycia, Matthew Prus, Elisabeth Heath, Edson Pontes
PURPOSE: To retrospectively assess long-term outcomes of percutaneous renal cryoablation, including factors affecting complications and local recurrence rates. MATERIALS AND METHODS: A total of 357 computed tomographic (CT) fluoroscopy-guided percutaneous cryoablation procedures were performed for 382 masses in 302 outpatients; 347 were biopsy-proven renal-cell carcinoma (RCC) or Bosniak category > III masses (n = 28). Benign pathologic conditions (n = 18) or metastatic non-RCC disease (n = 17) were included to analyze procedural complication rate, but recurrence rates, tumor staging, and nephrometry score were limited to RCCs...
October 2017: Journal of Vascular and Interventional Radiology: JVIR
https://www.readbyqxmd.com/read/28816275/-clinical-application-of-retroperitoneal-laparoscopic-surgery-combined-with-mini-flank-incision-hybrid-surgery-for-partial-nephrectomy-of-complex-renal-tumors
#6
X J Ye, J Liu, A Ablimit, L L Xiong, S J Liu, T Xu, X B Huang
OBJECTIVE: To evaluate the clinical effect and safety of retroperitoneal laparoscopic surgery combined with mini-flank incision "hybrid surgery" for partial nephrectomy of complex renal tumors. METHODS: Between April 2015 and December 2016, the clinical data from 16 patients with complex renal tumors who underwent the "hybrid surgery", including 10 males and 6 females, were retrospectively reviewed. The average age was (50.2±10.7) years, 9 cases were located in the left side and 7 cases in the right side, the mean tumor size was (6...
August 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28797586/obesity-as-defined-by-waist-circumference-but-not-body-mass-index-is-associated-with-higher-renal-mass-complexity
#7
Laura A Bertrand, Lewis J Thomas, Peng Li, Claire M Buchta, Shannon K Boi, Rachael M Orlandella, James A Brown, Kenneth G Nepple, Lyse A Norian
OBJECTIVES: Obesity, typically defined as a body mass index (BMI)≥30kg/m(2), is an established risk factor for renal cell carcinoma (RCC) but is paradoxically linked to less advanced disease at diagnosis and improved outcomes. However, BMI has inherent flaws, and alternate obesity-defining metrics that emphasize abdominal fat are available. We investigated 3 obesity-defining metrics, to better examine the associations of abdominal fat vs. generalized obesity with renal tumor stage, grade, or R...
August 7, 2017: Urologic Oncology
https://www.readbyqxmd.com/read/28727381/nephrometry-scores-and-perioperative-outcomes-following-robotic-partial-nephrectomy
#8
Renato B Corradi, Emily A Vertosick, Daniel P Nguyen, Antoni Vilaseca, Daniel D Sjoberg, Nicole Benfante, Lucas N Nogueira, Massimiliano Spaliviero, Karim A Touijer, Paul Russo, Jonathan A Coleman
OBJECTIVES: Based on imaging features, nephrometry scoring systems have been conceived to create a standardized and reproducible way to characterize renal tumor anatomy. However, less is known about which of these individual measures are important with regard to clinically relevant perioperative outcomes such as ischemia time (IT), estimated blood loss (EBL), length of hospital stay (LOS), and change in estimated glomerular filtration rate (eGFR) after robotic partial nephrectomy (PN)...
July 20, 2017: International Braz J Urol: Official Journal of the Brazilian Society of Urology
https://www.readbyqxmd.com/read/28717275/initial-experience-of-robotic-nephron-sparing-surgery-in-cases-of-high-renal-nephrometry-scores
#9
Girdhar S Bora, Ravimohan S Mavuduru, Aditya P Sharma, Sudheer K Devana, Nandita Kakkar, Anupam Lal, Shrawan K Singh, Arup K Mandal
INTRODUCTION: The renal nephrometry scoring (RNS) system enables prediction the feasibility of nephron-sparing surgery (NSS) in renal masses. There is insufficient data regarding the outcome of robot-assisted NSS in tumors with RNS ≥10. We reviewed the trifecta outcomes of patients undergoing robotic NSS with high RNS and compare it with tumors of low and intermediate RNS. MATERIALS AND METHODS: Our prospectively maintained data of all robot-assisted NSS were reviewed, and those with RNS of ≥10 were identified...
July 2017: Indian Journal of Urology: IJU: Journal of the Urological Society of India
https://www.readbyqxmd.com/read/28678572/percutaneous-image-guided-thermal-ablation-for-multifocal-renal-cell-carcinoma-10-year-experience-at-a-single-center
#10
Wenhui Zhou, Raul N Uppot, Adam S Feldman, Ronald S Arellano
OBJECTIVE: The objective of our study was to assess the technical success, safety, and oncologic and renal function outcomes of CT-guided percutaneous thermal ablation for synchronous multiple renal masses in a single session. MATERIALS AND METHODS: A retrospective analysis of 23 patients (16 men and 7 women; median age, 70 years) with biopsy-proven multifocal renal cell carcinoma (RCC) masses treated with radiofrequency ablation (RFA), cryoablation, or microwave ablation (MWA) was performed...
July 5, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28652876/positive-surgical-margins-during-partial-nephrectomy-for-renal-cell-carcinoma-results-from-canadian-kidney-cancer-information-system-ckcis-collaborative
#11
Rahul K Bansal, Simon Tanguay, Antonio Finelli, Ricardo Rendon, Ronald B Moore, Rodney H Breau, Louis Lacombe, Peter C Black, Jun Kawakami, Darrel Drachenberg, Stephen Pautler, Olli Saarela, Zhihui Liu, Michael A S Jewett, Anil Kapoor
INTRODUCTION: We sought to determine the incidence, risk factors, and prognosis for patients with positive surgical margin (PSM) during partial nephrectomy (PN) for renal cell carcinoma (RCC). METHODS: From the Canadian Kidney Cancer information system (CKCis) database, a historical cohort of PN patients with PSM were identified and compared to negative surgical margin (NSM). Risk factors for PSM were examined through multivariable logistic regression. Kaplan-Meier curves were used to compare progression-free survival...
June 2017: Canadian Urological Association Journal, Journal de L'Association des Urologues du Canada
https://www.readbyqxmd.com/read/28652159/skin-to-tumor-distance-predicts-treatment-failure-of-t1a-renal-cell-carcinoma-following-percutaneous-cryoablation
#12
Simone L Vernez, Zhamshid Okhunov, Kamaljot Kaler, Ramy F Youssef, Rahul Dutta, Arkadiy Palvanov, Paras Shah, Kathryn Osann, David N Siegel, Igor Lobko, Louis Kavoussi, Ralph V Clayman, Jaime Landman
OBJECTIVE: To determine the impact of skin-to-tumor (STT) distance on the risk for treatment failure following percutaneous cryoablation (PCA). METHODS: We retrospectively reviewed patients who underwent PCA with documented T1a recurrent renal cell carcinoma (RCC) at 2 academic centers between 2005 and 2015. Patient demographics, tumor characteristics, and perioperative and postoperative course variables were collected. Additionally, we measured the STT distance by averaging the distance from the skin to the center of the tumor at 0°, 45°, and 90° on preoperative computed tomography imaging...
June 23, 2017: Urology
https://www.readbyqxmd.com/read/28648469/long-term-clinical-outcomes-following-radiofrequency-and-microwave-ablation-of-renal-cell-carcinoma-at-a-single-va-medical-center
#13
Salim E Abboud, Tanay Patel, Stephanie Soriano, Joseph Giesler, Nannette Alvarado, Preet Kang
PURPOSE: Microwave ablation (MWA) is a relatively newer treatment modality for treatment of renal cell carcinoma (RCC), and only a few small studies have examined the short- and long-term outcomes for MWA applied to renal tumors. The purpose of this retrospective review is to assess the initial experience including technical short- and long-term success rates of using radiofrequency ablation (RFA) and MWA for RCC at a single Veterans Affairs (VA) medical center. MATERIALS AND METHODS: Tumor characteristics were recorded using the R...
May 17, 2017: Current Problems in Diagnostic Radiology
https://www.readbyqxmd.com/read/28630859/the-application-of-internal-suspension-technique-in-retroperitoneal-laparoscopic-partial-nephrectomy-for-renal-ventral-tumors
#14
Wenlong Zhong, Yicong Du, Lei Zhang, Xuesong Li, Cuijian Zhang, Dong Fang, Gengyan Xiong, Zhisong He, Liqun Zhou
OBJECTIVE: To evaluate the feasibility of an internal suspension technique in retroperitoneal laparoscopic partial nephrectomy for the management of renal ventral tumors. METHODS: Between January 2013 and July 2016, a total of 145 patients underwent retroperitoneal laparoscopic partial nephrectomy with or without internal suspension technique. For patients who underwent internal suspension technique, the surgeons preserved the external fat of the renal tumor as a suspension traction measure when separating the kidney...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28588259/peritumoral-artery-scoring-system-a-novel-scoring-system-to-predict-renal-function-outcome-after-laparoscopic-partial-nephrectomy
#15
Ruiyun Zhang, Guangyu Wu, Jiwei Huang, Oumin Shi, Wen Kong, Yonghui Chen, Jianrong Xu, Wei Xue, Jin Zhang, Yiran Huang
The present study aimed to assess the impact of peritumoral artery characteristics on renal function outcome prediction using a novel Peritumoral Artery Scoring System based on computed tomography arteriography. Peritumoral artery characteristics and renal function were evaluated in 220 patients who underwent laparoscopic partial nephrectomy and then validate in 51 patients with split and total glomerular filtration rate (GFR). In particular, peritumoral artery classification and diameter were measured to assign arteries into low, moderate, and high Peritumoral Artery Scoring System risk categories...
June 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28586250/pain-after-percutaneous-irreversible-electroporation-of-renal-tumors-is-not-dependent-on-tumor-location
#16
Igor Sorokin, Aaron H Lay, Nikitha K Reddy, Noah E Canvasser, Murthy Chamarthy, Jeffrey A Cadeddu
INTRODUCTION: Irreversible electroporation (IRE) is a non-thermal minimally invasive technique that is used to treat small renal masses (SRMs). Prior work has demonstrated greater narcotic requirements after radiofrequency ablation (RFA) for tumors that are closer to body-wall musculature. We hypothesized that pain after IRE is not dependent on tumor location due to the athermal mechanistic action. MATERIALS AND METHODS: A retrospective review of 50 consecutive percutaneous IRE and RFA cases was performed from 2013 to 2014...
August 2017: Journal of Endourology
https://www.readbyqxmd.com/read/28579358/the-impact-of-t1-renal-tumor-characteristics-on-baseline-renal-function-in-patients-undergoing-partial-nephrectomy-a-renal-scan-based-objective-assessment
#17
F Porpiglia, R Autorino, C Fiori, H Zargar, D Amparore, R Bertolo
INTRODUCTION AND OBJECTIVES: To objectively assess the impact of renal tumors characteristics and other measurable factors on baseline renal function in patient undergoing partial nephrectomy (PN). METHODS: Patients who underwent laparoscopic PN for a T1 renal mass between 2012 and 2016 and who also had a mercapto-acetyltriglycine renal scan prior to surgery were retrieved from a single institution prospectively-collected database. Split renal function (SRF) and Effective Renal Plasma Flow (ERPF) for both the operated kidney and the unaffected contralateral were calculated...
August 2017: European Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28411915/surgical-techniques-in-the-management-of-small-renal-masses
#18
REVIEW
Michael Daugherty, Gennady Bratslavsky
This article provides a review and outline of the various surgical techniques for small renal masses. It covers surgical approaches and compares outcomes of open versus minimally invasive surgery. The article discusses renal nephrometry scoring and renal ischemia at time of resection. Techniques for controlling the renal hilum and controlling blood flow to the kidney are described. Extirpative techniques for small renal masses are reviewed along with a comparison of outcomes. With careful adherence to key oncologic and surgical principles, negative margins, no complications, and no or minimal decline in renal functional outcomes can be achieved...
May 2017: Urologic Clinics of North America
https://www.readbyqxmd.com/read/28411910/renal-tumor-anatomic-complexity-clinical-implications-for-urologists
#19
REVIEW
Shreyas S Joshi, Robert G Uzzo
Anatomic tumor complexity can be objectively measured and reported using nephrometry. Various scoring systems have been developed in an attempt to correlate tumor complexity with intraoperative and postoperative outcomes. Nephrometry may also predict tumor biology in a noninvasive, reproducible manner. Other scoring systems can help predict surgical complexity and the likelihood of complications, independent of tumor characteristics. The accumulated data in this new field provide provocative evidence that objectifying anatomic complexity can consolidate reporting mechanisms and improve metrics of comparisons...
May 2017: Urologic Clinics of North America
https://www.readbyqxmd.com/read/28394520/-laparoscopic-partial-nephrectomy-with-superselective-balloon-embolization-of-renal-artery
#20
A V Maksimov, A G Martov, L P Pavlov, P A Neustroev, R R Vinokurov
AIM: To use superselective balloon embolization of segmental branches of the renal artery for intraoperative hemostasis during partial nephrectomy for renal malignancy. MATERIALS AND METHODS: From October 2015 to September 2016, 11 patients, including 3 males and 8 females aged 29-72 (mean 56.8) years underwent laparoscopic partial nephrectomy with superselective balloon embolization. In 5 and 6 cases the tumors were located in the right and left kidney, respectively, and in 7, 1 and 3 cases they were found in lower, upper and middle segments, respectively...
April 2017: Urologii︠a︡
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