keyword
MENU ▼
Read by QxMD icon Read
search

gleason grades

keyword
https://www.readbyqxmd.com/read/28207981/a-multiparametric-magnetic-resonance-imaging-based-risk-model-to-determine-the-risk-of-significant-prostate-cancer-prior-to-biopsy
#1
Pim J van Leeuwen, Andrew Hayen, James E Thompson, Daniel Moses, Ron Shnier, Maret Böhm, Magdaline Abuodha, Anne-Maree Haynes, Francis Ting, Jelle Barentsz, Monique Roobol, Justin Vass, Krishan Rasiah, Warick Delprado, Phillip D Stricker
OBJECTIVES: To develop and externally validate a predictive model for detection of significant prostate cancer (PC). SUBJECTS AND METHODS: Development of the model was based on prospective cohort including 393 men who underwent mpMRI prior to biopsy. External validity of the model was then examined retrospectively in 198 men from a separate institution whom underwent a mpMRI followed by biopsy for abnormal PSA/DRE. A model was developed with age, PSA, DRE, prostate volume, previous biopsy and PIRADS score as predictors for significant PC (Gleason 7 with >5% grade 4, ≥ 20% cores positive or ≥ 7mm of PC in any core)...
February 16, 2017: BJU International
https://www.readbyqxmd.com/read/28192761/a-comparison-of-bayesian-and-non-linear-regression-methods-for-robust-estimation-of-pharmacokinetics-in-dce-mri-and-how-it-affects-cancer-diagnosis
#2
Nikolaos Dikaios, David Atkinson, Chiara Tudisca, Pierpaolo Purpura, Martin Forster, Hashim Ahmed, Timothy Beale, Mark Emberton, Shonit Punwani
The aim of this work is to compare Bayesian Inference for nonlinear models with commonly used traditional non-linear regression (NR) algorithms for estimating tracer kinetics in Dynamic Contrast Enhanced Magnetic Resonance Imaging (DCE-MRI). The algorithms are compared in terms of accuracy, and reproducibility under different initialization settings. Further it is investigated how a more robust estimation of tracer kinetics affects cancer diagnosis. The derived tracer kinetics from the Bayesian algorithm were validated against traditional NR algorithms (i...
February 5, 2017: Computerized Medical Imaging and Graphics: the Official Journal of the Computerized Medical Imaging Society
https://www.readbyqxmd.com/read/28187449/low-pca3-expression-is-a-marker-of-poor-differentiation-in-localized-prostate-tumors-exploratory-analysis-from-12-076-patients
#3
Mohammed Alshalalfa, Gerald W Verhaegh, Ewan A Gibb, Maria Santiago-Jiménez, Nicholas Erho, Jennifer Jordan, Kasra Yousefi, Lucia L C Lam, Tyler Kolisnik, Jijumon Chelissery, Roland Seiler, Ashley E Ross, R Jeffrey Karnes, Edward M Schaeffer, Tamara T Lotan, Robert B Den, Stephen J Freedland, Elai Davicioni, Eric A Klein, Jack A Schalken
BACKGROUND: Prostate cancer antigen 3 (PCA3) is a prostate cancer diagnostic biomarker that has been clinically validated. The limitations of the diagnostic role of PCA3 in initial biopsy and the prognostic role are not well established. Here, we elucidate the limitations of tissue PCA3 to predict high grade tumors in initial biopsy. RESULTS: PCA3 has a bimodal distribution in both biopsy and radical prostatectomy (RP) tissues, where low PCA3 expression was significantly associated with high grade disease (p<0...
February 7, 2017: Oncotarget
https://www.readbyqxmd.com/read/28187006/time-dependent-diffusion-in-prostate-cancer
#4
Gregory Lemberskiy, Andrew B Rosenkrantz, Jelle Veraart, Samir S Taneja, Dmitry S Novikov, Els Fieremans
OBJECTIVE: Prior studies in prostate diffusion-weighted magnetic resonance imaging (MRI) have largely explored the impact of b-value and diffusion directions on estimated diffusion coefficient D. Here we suggest varying diffusion time, t, to study time-dependent D(t) in prostate cancer, thereby adding an extra dimension in the development of prostate cancer biomarkers. METHODS: Thirty-eight patients with peripheral zone prostate cancer underwent 3-T MRI using an external-array coil and a diffusion-weighted image sequence acquired for b = 0, as well as along 12 noncollinear gradient directions for b = 500 s/mm using stimulated echo acquisition mode (STEAM) diffusion tensor imaging (DTI)...
February 9, 2017: Investigative Radiology
https://www.readbyqxmd.com/read/28186973/upregulation-of-fam84b-during-prostate-cancer-progression
#5
Nicholas Wong, Yan Gu, Anil Kapoor, Xiaozeng Lin, Diane Ojo, Fengxiang Wei, Judy Yan, Jason de Melo, Pierre Major, Geoffrey Wood, Tariq Aziz, Jean-Claude Cutz, Michael Bonert, Arthur J Patterson, Damu Tang
Although the FAM84B gene lies within chromosome 8q24, a locus frequently altered in prostate cancer (PC), its alteration during prostate tumorigenesis has not been well studied. We report here FAM84B upregulation in DU145 cell-derived prostate cancer stem-like cells (PCSLCs) and DU145 cell-produced lung metastases compared to subcutaneous xenograft tumors. FAM84B protein was detected in bone metastases and primary PCs. Nanostring examination of 7 pairs of tumor adjacent normal and PC tissues revealed elevations in FAM84B mRNA levels in all carcinomas...
February 7, 2017: Oncotarget
https://www.readbyqxmd.com/read/28185762/biochemical-control-and-toxicity-for-favorable-and-intermediate-risk-patients-using-real-time-intraoperative-inverse-optimization-prostate-seed-implant-less-is-more
#6
G Shukla, A Sarkar, A Hanlon, E Crockett, H C Chen, J Martelli-Raben, A Glick, B Benge, M Lobis, S Terranova, T Desperito, D Cozzolino, E Kemmerer, F Mourtada, A Raben
PURPOSE: To report the biochemical control rate and clinical outcomes with real-time inverse planning (inverse optimization prostate seed implant [IO-PSI]) for favorable-risk (FR) and intermediate-risk (IR) prostate adenocarcinoma in a community practice setting. This analysis is an extended followup of our initial report, with favorable early biochemical control rate (biochemical nonevidence of disease) of 97% at 4 years. METHODS AND MATERIALS: Three hundred fifty-seven evaluable patients with FR and IR prostate cancer underwent real-time IO-PSI (iodine-125/145 Gy or palladium-103/120 Gy) between 2001 and 2013...
February 6, 2017: Brachytherapy
https://www.readbyqxmd.com/read/28179286/italian-prostate-biopsies-group-2016-updated-guidelines-insights
#7
REVIEW
Andrea Fandella, Vincenzo Scattoni, Andrea Galosi, Pietro Pepe, Michelangelo Fiorentino, Caterina Gaudiano, Marco Giampaoli, Roberta Gunelli, Pasquale Martino, Vittorino Montanaro, Rodolfo Montironi, Tiziana Pierangeli, Armando Stabile, Alessandro Bertaccini
AIM: To present a summary of the updated guidelines of the Italian Prostate Biopsies Group following the best recent evidence of the literature. MATERIALS AND METHODS: A systematic review of the new data emerging from 2012-2015 was performed by a panel of 14 selected Italian experts in urology, pathology and radiology. The experts collected articles published in the English-language literature by performing a search using Medline, EMBASE and the Cochrane Library database...
2017: Anticancer Research
https://www.readbyqxmd.com/read/28177964/contemporary-gleason-grading-of-prostatic-carcinoma-an-update-with-discussion-on-practical-issues-to-implement-the-2014-international-society-of-urological-pathology-isup-consensus-conference-on-gleason-grading-of-prostatic-carcinoma
#8
Jonathan I Epstein, Mahul B Amin, Victor E Reuter, Peter A Humphrey
The primary proceedings of the 2014 International Society of Urological Pathology Grading Conference were published promptly in 2015 and dealt with: (1) definition of various grading patterns of usual acinar carcinoma, (2) grading of intraductal carcinoma; and (3) support for the previously proposed new Grade Groups. The current manuscript in addition to highlighting practical issues to implement the 2014 recommendations, provides an updated perspective based on numerous studies published after the 2014 meeting...
February 7, 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28173626/biopsy-undergrading-in-men-with-gleason-score%C3%A2-6-and-fatal-prostate-cancer-in-the-european-randomized-study-of-screening-for-prostate-cancer-rotterdam
#9
Arnout R Alberts, Leonard P Bokhorst, Charlotte F Kweldam, Ivo G Schoots, Theo H van der Kwast, Geert J van Leenders, Monique J Roobol
OBJECTIVES: A total of 15 men who died of prostate cancer had cT1/2 biopsy Gleason score ≤6 prostate cancer at prevalence screening in the European Randomized study of Screening for Prostate Cancer Rotterdam. Our objective was to explain (part of) these prostate cancer deaths by undergrading with the classical Gleason score. METHODS: Biopsy specimens of 98 men with classical Gleason score ≤6 or 3 + 4 = 7 at prevalence screening in the European Randomized study of Screening for Prostate Cancer Rotterdam were retrospectively reviewed by two pathologists using the International Society of Urological Pathology 2014 modified Gleason score...
February 7, 2017: International Journal of Urology: Official Journal of the Japanese Urological Association
https://www.readbyqxmd.com/read/28169016/from-gleason-grading-system-and-high-grade-tertiary-patterns-to-grade-groups-and-integrated-quantitative-gleason-score
#10
EDITORIAL
Rodolfo Montironi, Liang Cheng, Marina Scarpelli, Antonio Lopez-Beltran
No abstract text is available yet for this article.
February 3, 2017: European Urology
https://www.readbyqxmd.com/read/28164396/improved-multiparametric-mri-discrimination-between-low-risk-prostate-cancer-and-benign-tissues-in-a-small-cohort-of-5%C3%AE-reductase-inhibitor-treated-individuals-as-compared-with-an-untreated-cohort
#11
Olga Starobinets, John Kurhanewicz, Susan M Noworolski
The purpose of this study was to determine whether 5α-reductase inhibitors (5-ARIs) affect the discrimination between low-grade prostate cancer and benign tissues on multiparametric MRI (mpMRI). Twenty men with biopsy-proven Gleason 3 + 3 prostate cancer and 3 T mpMRI were studied. Ten patients (Tx) had been receiving 5-ARIs for at least a year at scan time. Ten untreated patients (Un) were matched to the treated cohort. For each subject two regions of interest representing cancerous and benign tissues were drawn within the peripheral zone of each prostate, MR measures evaluated, and cancer contrast versus benign (contrast = (MRTumor  - MRHealthy )/MRHealthy ) calculated...
February 6, 2017: NMR in Biomedicine
https://www.readbyqxmd.com/read/28162815/improving-the-rotterdam-european-randomized-study-of-screening-for-prostate-cancer-risk-calculator-for-initial-prostate-biopsy-by-incorporating-the-2014-international-society-of-urological-pathology-gleason-grading-and-cribriform-growth
#12
Monique J Roobol, Jan F M Verbeek, Theo van der Kwast, Intan P Kümmerlin, Charlotte F Kweldam, Geert J L H van Leenders
BACKGROUND: The survival rate for men with International Society of Urological Pathology (ISUP) grade 2 prostate cancer (PCa) without invasive cribriform (CR) and intraductal carcinoma (IDC) is similar to that for ISUP grade 1. If updated into the European Randomized Study of Screening for Prostate Cancer (ERSPC Rotterdam) risk calculator number 3 (RC3), this may further improve upfront selection of men who need a biopsy. OBJECTIVE: To improve the number of possible biopsies avoided, while limiting undiagnosed clinically important PCa by applying the updated RC3 for risk-based patient selection...
February 2, 2017: European Urology
https://www.readbyqxmd.com/read/28160549/understanding-psa-and-its-derivatives-in-prediction-of-tumor-volume-addressing-health-disparities-in-prostate-cancer-risk-stratification
#13
Felix M Chinea, Kirill Lyapichev, Jonathan I Epstein, Deukwoo Kwon, Paul Taylor Smith, Alan Pollack, Richard J Cote, Oleksandr N Kryvenko
OBJECTIVES: To address health disparities in risk stratification of U.S. Hispanic/Latino men by characterizing influences of prostate weight, body mass index, and race/ethnicity on the correlation of PSA derivatives with Gleason score 6 (Grade Group 1) tumor volume in a diverse cohort. RESULTS: Using published PSA density and PSA mass density cutoff values, men with higher body mass indices and prostate weights were less likely to have a tumor volume <0.5 cm3...
January 30, 2017: Oncotarget
https://www.readbyqxmd.com/read/28157066/multiparametric-mri-in-detection-and-staging-of-prostate-cancer
#14
Lars Boesen
BACKGROUND: Prostate cancer (PCa) is the second leading cause of cancer-related mortality and the most frequently diagnosed male malignant disease among men in the Nordic countries. The manifestation of PCa ranges from indolent to highly aggressive disease and due to this high variation in PCa progression, the diagnosis and subsequent treatment planning can be challenging. The current diagnostic approach with PSA testing and digital rectal examination followed by transrectal ultrasound biopsies (TRUS-bx) lack in both sensitivity and specificity in PCa detection and offers limited information about the aggressiveness and stage of the cancer...
February 2017: Danish Medical Journal
https://www.readbyqxmd.com/read/28156003/population-based-validation-of-the-2014-isup-gleason-grade-groups-in-patients-treated-with-radical-prostatectomy-brachytherapy-external-beam-radiation-or-no-local-treatment
#15
Raisa S Pompe, Helen Davis-Bondarenko, Emanuele Zaffuto, Zhe Tian, Shahrokh F Shariat, Sami-Ramzi Leyh-Bannurah, Jonas Schiffmann, Fred Saad, Hartwig Huland, Markus Graefen, Derya Tilki, Pierre I Karakiewicz
BACKGROUND: To test discriminant ability of the 2014 ISUP Gleason grade groups (GGG) for prediction of prostate cancer specific mortality (PCSM) after radical prostatectomy (RP), brachytherapy (BT), external beam radiation (EBRT) or no local treatment (NLT) relative to traditional Gleason grading (TGG). METHODS: In the Surveillance, Epidemiology, and End Results (SEER)-database (2004-2009), 2,42,531 non-metastatic prostate cancer (PCa) patients were identified, who underwent local treatment (RP, BT, EBRT only) or NLT...
February 3, 2017: Prostate
https://www.readbyqxmd.com/read/28155999/accuracy-of-grading-gleason-score-7-prostatic-adenocarcinoma-on-needle-biopsy-influence-of-percent-pattern-4-and-other-histological-factors
#16
Abdelrazak Meliti, Evita Sadimin, Mario Diolombi, Francesca Khani, Jonathan I Epstein
BACKGROUND: Recognition of Gleason pattern 4 in prostatic needle biopsies is crucial for both prognosis and therapy. Recently, it has been recommended to record percent pattern 4 when Gleason score 7 cancer is the highest grade in a case. METHODS: Four hundred and five prostate needle core biopsies received for a second opinion at our institution from February-June, 2015 were prospectively diagnosed with prostatic adenocarcinoma Gleason score 7 as the highest score on review by a consultant urological pathologist...
February 3, 2017: Prostate
https://www.readbyqxmd.com/read/28152258/utility-of-computed-diffusion-weighted-mri-for-predicting-aggressiveness-of-prostate-cancer
#17
Yuma Waseda, Soichiro Yoshida, Taro Takahara, Thomas Christian Kwee, Yoh Matsuoka, Kazutaka Saito, Kazunori Kihara, Yasuhisa Fujii
PURPOSE: To investigate the value of computed (c) diffusion-weighted imaging (DWI) in assessing prostate cancer aggressiveness. MATERIALS AND METHODS: Fifty-five patients with peripheral zone prostate cancer who underwent prebiopsy 1.5T magnetic resonance imaging (including native DWI at b-values of 0 and 1000 s/mm(2) ) were included. cDWI signal intensities of peripheral zone prostate cancer and nonmalignant prostate tissue were measured. Association between changes in monoexponentially calculated cDWI signals according to different b-values and primary Gleason grades were assessed...
February 2, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/28146062/high-level-%C3%AE-glutamyl-hydrolase-ggh-expression-is-linked-to-poor-prognosis-in-erg-negative-prostate-cancer
#18
Nathaniel Melling, Masoud Rashed, Cornelia Schroeder, Claudia Hube-Magg, Martina Kluth, Dagmar Lang, Ronald Simon, Christina Möller-Koop, Stefan Steurer, Guido Sauter, Frank Jacobsen, Franziska Büscheck, Corinna Wittmer, Till Clauditz, Till Krech, Maria Christina Tsourlakis, Sarah Minner, Hartwig Huland, Markus Graefen, Lars Budäus, Imke Thederan, Georg Salomon, Thorsten Schlomm, Waldemar Wilczak
γ-glutamyl-hydrolase (GGH) is a ubiquitously-expressed enzyme that regulates intracellular folate metabolism for cell proliferation, DNA synthesis, and repair. Employing GGH immunohistochemistry on a tissue microarray with 12,427 prostate cancers, we found that GGH expression was negative to low in normal prostate epithelium, whereas 88.3% of our 10,562 interpretable cancers showed GGH expression. GGH staining was considered as low intensity in 49.6% and as high intensity in 38.6% of cancers. High GGH expression was linked to the TMPRSS2:ERG-fusion positive subset of cancers (p < 0...
January 29, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28145029/clinicopathological-importance-of-anterior-prostate-cancer-in-japanese-men
#19
Shun Sato, Hiroyuki Takahashi, Takahiro Kimura, Shin Egawa, Bungo Furusato, Masahiro Ikegami
Prostate cancer of transition zone origin or anterior location has been recognized as infrequent, smaller in size and indolent, whereas, our previous report showed that transition zone/anterior cancer was frequently experienced in Japanese men. The current study was conducted to show clinicopathological characteristics of transition zone/anterior cancer. A total of 201 radical prostatectomy specimens were categorized as cancer of anterior or posterior prostate where more than two thirds of the tumor existed in the specific area...
February 1, 2017: Pathology International
https://www.readbyqxmd.com/read/28144985/socs3-immunohistochemical-expression-seems-to-support-the-2005-and-2014-international-society-of-urological-pathology-isup-modified-gleason-grading-system
#20
Francesco Pierconti, Maurizio Martini, Tonia Cenci, Gian Luigi Petrone, Riccardo Ricci, Emilio Sacco, Pier Francesco Bassi, Luigi Maria Larocca
BACKGROUND: In the 2014, The International Society of Urological Pathology (ISUP) consensus conference update the grading of prostate, last revised in 2005. In this study we evaluate the SOCS3 immunohistochemical protein expression in different Gleason prostatic adenocarcinoma: classical Gleason grade 3, classical Gleason grade 3 upgraded to Gleason grade 4 according to the ISUP modifications and classical and modified Gleason grade 4. The major conclusions were: (i) Cribriform glands should be assigned a Gleason pattern 4, regardless of morphology; (ii) Glomeruloid glands should be assigned a Gleason pattern 4, regardless of morphology; (iii) Grading of mucinous carcinoma of the prostate should be based on its underlying growth pattern rather than all as pattern 4; and (iv) Intraductal carcinoma of the prostate without invasive carcinoma should not assigned Gleason grade and a comment about aggressive carcinoma probably associated should be made...
February 1, 2017: Prostate
keyword
keyword
98250
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"