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https://www.readbyqxmd.com/read/29155624/functional-and-targeted-lymph-node-imaging-in-prostate-cancer-current-status-and-future-challenges
#1
Harriet C Thoeny, Sebastiano Barbieri, Johannes M Froehlich, Baris Turkbey, Peter L Choyke
Patients with prostate cancer who have regional lymph node (LN) metastases face an increased risk of death from disease and are therefore treated aggressively. Surgical LN dissection is the established method of staging regional nodes; however, this invasive technique carries substantial morbidities and a noninvasive imaging method is needed to reduce or eliminate the need for extended pelvic LN dissections (ePLND). Conventional computed tomography and magnetic resonance (MR) imaging have proven insensitive and nonspecific because both use nodal size criteria, which is notoriously inaccurate...
December 2017: Radiology
https://www.readbyqxmd.com/read/29154145/evaluation-of-a-novel-grpr-antagonist-for-prostate-cancer-pet-imaging-64-cu-dotha2-peg-rm26
#2
Nematallah Mansour, Michel Paquette, Samia Ait-Mohand, Véronique Dumulon-Perreault, Brigitte Guérin
INTRODUCTION: Gastrin releasing peptide receptors (GRPRs) are significantly over-expressed on a large proportion of prostate cancers making them prime candidates for receptor-mediated nuclear imaging by PET. Recently, we synthesized a novel bifunctional chelator (BFC) bearing hydroxamic acid arms (DOTHA2). Here we investigated the potential of a novel DOTHA2-conjugated, (64)Cu-radiolabeled GRPR peptide antagonist, [D-Phe(6)-Sta(13)-Leu(14)-NH2]bombesin(6-14) (DOTHA2-PEG-RM26) to visualize prostate tumors by PET imaging...
October 23, 2017: Nuclear Medicine and Biology
https://www.readbyqxmd.com/read/29151782/salvage-low-dose-rate-brachytherapy-for-recurrent-prostate-cancer-after-external-beam-radiotherapy-results-from-a-single-institution-with-focus-on-toxicity-and-functional-outcomes
#3
F Barbera, L Triggiani, M Buglione, P Ghirardelli, P Vitali, B Caraffini, P Borghetti, D Greco, L Bardoscia, N Pasinetti, L Costa, M Maddalo, B Ghedi, B La Face, S M Magrini
Background/aim: Low dose rate brachytherapy has been used as salvage therapy for locally recurrent prostate cancer (PC) after primary external beam radiation therapy (EBRT), along with surgery and cryotherapy. All these techniques, in particular, when applied to the whole gland, involve a relatively high risk of toxicity and may worsen the patient's quality of life. Our aim is to evaluate the results of whole-gland salvage brachytherapy (SBT) after primary EBRT in terms of toxicity, functional outcomes, and efficacy...
2017: Clinical Medicine Insights. Oncology
https://www.readbyqxmd.com/read/29149895/novel-insights-into-chromosomal-conformations-in-cancer
#4
REVIEW
Ruobing Jia, Peiwei Chai, He Zhang, Xianqun Fan
Exploring gene function is critical for understanding the complexity of life. DNA sequences and the three-dimensional organization of chromatin (chromosomal interactions) are considered enigmatic factors underlying gene function, and interactions between two distant fragments can regulate transactivation activity via mediator proteins. Thus, a series of chromosome conformation capture techniques have been developed, including chromosome conformation capture (3C), circular chromosome conformation capture (4C), chromosome conformation capture carbon copy (5C), and high-resolution chromosome conformation capture (Hi-C)...
November 17, 2017: Molecular Cancer
https://www.readbyqxmd.com/read/29147764/prospective-evaluation-of-18-f-facbc-pet-ct-and-pet-mri-versus-multiparametric-mri-in-intermediate-to-high-risk-prostate-cancer-patients-flucipro-trial
#5
Ivan Jambor, Anna Kuisma, Esa Kähkönen, Jukka Kemppainen, Harri Merisaari, Olli Eskola, Jarmo Teuho, Ileana Montoya Perez, Marko Pesola, Hannu J Aronen, Peter J Boström, Pekka Taimen, Heikki Minn
PURPOSE: The purpose of this study was to evaluate (18)F-FACBC PET/CT, PET/MRI, and multiparametric MRI (mpMRI) in detection of primary prostate cancer (PCa). METHODS: Twenty-six men with histologically confirmed PCa underwent PET/CT immediately after injection of 369 ± 10 MBq (18)F-FACBC (fluciclovine) followed by PET/MRI started 55 ± 7 min from injection. Maximum standardized uptake values (SUVmax) were measured for both hybrid PET acquisitions. A separate mpMRI was acquired within a week of the PET scans...
November 16, 2017: European Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/29145346/role-of-delayed-time-point-imaging-during-abdominal-and-pelvic-cancer-screening-using-fdg-pet-ct-in-the-general-population
#6
Shotaro Naganawa, Takeharu Yoshikawa, Koichiro Yasaka, Eriko Maeda, Naoto Hayashi, Osamu Abe
Although delayed-time-point imaging is expected to improve the results of [F]-fluorodeoxyglucose (FDG)-positron emission tomography/computed tomography (PET/CT), how examinees will benefit from dual-time-point imaging versus initial-time-point imaging alone, remains unclear. This study investigated the role of delayed-time-point imaging in improving the results of abdominal and pelvic cancer screening using FDG-PET/CT.This retrospective review included 3131 screening results (average subject age: 55.5 years, range: 40-88 years)...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29145267/osteoblastic-bone-metastases-from-neuroendocrine-tumor-net-of-unknown-origin-detected-by-18fluorocholine-pet-ct-and-its-comparison-with-68gallium-dotatoc-pet-ct-case-report-and-review-of-the-literature
#7
Alberto Bongiovanni, Federica Recine, Monica Celli, Giulia Marcantognini, Flavia Foca, Chiara Liverani, Valentina Fausti, Alessandro De Vita, Giacomo Miserocchi, Laura Mercatali, Dino Amadori, Toni Ibrahim
RATIONALE: Choline (CH) positron emission tomography (PET)/computed tomography (CT) with fluorine 18 (F) CH is increasingly used not only to evaluate patients with biochemically recurrent prostate cancer but also to assess metastatic lesions that are difficult or impossible to identify using more conventional modalities. Our experience with CH PET/CT has shown that it can also be used for many other malignancies. PRESENTING CONCERNS: A 71-year-old male with a neuroendocrine tumor (NET) of unknown origin showed osteoblastic bone metastases positive to F-CH PET...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29144944/re-impact-of-ga-68-psma-11-pet-on-management-in-patients-with-biochemically-recurrent-prostate-cancer
#8
Samir S Taneja
No abstract text is available yet for this article.
December 2017: Journal of Urology
https://www.readbyqxmd.com/read/29143354/synthesis-and-biological-properties-of-radiohalogenated-%C3%AE-%C3%AE-disubstituted-amino-acids-for-pet-and-spect-imaging-of-amino-acid-transporters-aats
#9
Mark M Goodman, Weiping Yu, Nashwa Jarkas
Fluorine-18 and iodine-123 labeled non-natural alicyclic and methyl branched disubstituted α,α-amino acids are a diverse and useful class of tumor imaging agents suitable for positron emission tomography (PET) and single photon emission computed tomography (SPECT). These tracers target the increased expression of the cell membrane amino acid transporter systems L, ASC and A exhibited by many human tumor cells. The most established clinical use for these radiolabeled amino acids is imaging primary and recurrent gliomas, and primary, recurrent and metastatic prostate cancer...
November 16, 2017: Journal of Labelled Compounds & Radiopharmaceuticals
https://www.readbyqxmd.com/read/29141866/prostate-specific-membrane-antigen-cleavage-of-vitamin-b9-stimulates-oncogenic-signaling-through-metabotropic-glutamate-receptors
#10
Charalambos Kaittanis, Chrysafis Andreou, Haley Hieronymus, Ninghui Mao, Catherine A Foss, Matthias Eiber, Gregor Weirich, Palak Panchal, Anuradha Gopalan, Juan Zurita, Samuel Achilefu, Gabriela Chiosis, Vladimir Ponomarev, Markus Schwaiger, Brett S Carver, Martin G Pomper, Jan Grimm
Prostate-specific membrane antigen (PSMA) or folate hydrolase 1 (FOLH1) is highly expressed on prostate cancer. Its expression correlates inversely with survival and increases with tumor grade. However, the biological role of PSMA has not been explored, and its role in prostate cancer remained elusive. Filling this gap, we demonstrate that in prostate cancer, PSMA initiates signaling upstream of PI3K through G protein-coupled receptors, specifically via the metabotropic glutamate receptor (mGluR). PSMA's carboxypeptidase activity releases glutamate from vitamin B9 and other glutamated substrates, which activate mGluR I...
November 15, 2017: Journal of Experimental Medicine
https://www.readbyqxmd.com/read/29140118/-11-c-choline-pet-ct-for-detection-and-localization-of-parathyroid-adenomas
#11
Ahmad Parvinian, Erica L Martin-Macintosh, Ajit H Goenka, Jolanta M Durski, Brian P Mullan, Brad J Kemp, Geoffrey B Johnson
OBJECTIVE: The purpose of this study is to determine the efficacy of (11)C-choline PET/CT for the detection of parathyroid adenomas by retrospectively reviewing a large patient population. MATERIALS AND METHODS: In this single-institution retrospective study, 7088 (11)C-choline PET/CT scans performed of 2933 men with prostate cancer from January 2005 through February 2016 were evaluated. Patients with suspected parathyroid adenomas were identified through a review of the electronic medical record and relevant imaging...
November 15, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/29139652/liposarcoma-of-the-spermatic-cord-%C3%A2-a-rare-pathological-entity
#12
Nikola Radović, Arianna Bizatzki, Rajka Turner
Liposarcoma of the spermatic cord is a very rare neoplasm with fewer than 200 cases recorded in world literature. This report describes a case of liposarcoma of the spermatic cord which developed after radical prostatectomy and salvage radiotherapy for prostate cancer treatment. Four years following surgical treatment of the primary neoplasm and one year following radiotherapy, the 67 –year –old patient was referred to the urology clinic for the emergence of a mass in the right hemiscrotum region. Ultrasonography revealed a homogenous isodense mass measuring 4...
March 2017: Collegium Antropologicum
https://www.readbyqxmd.com/read/29138500/circulating-androgen-receptor-combined-with-18f-fluorocholine-pet-ct-metabolic-activity-and-outcome-to-androgen-receptor-signalling-directed-therapies-in-castration-resistant-prostate-cancer
#13
V Conteduca, E Scarpi, P Caroli, S Salvi, C Lolli, S L Burgio, C Menna, G Schepisi, S Testoni, G Gurioli, G Paganelli, V Casadio, F Matteucci, U De Giorgi
The association between choline uptake and androgen receptor (AR) expression is suggested by the upregulation of choline kinase-alpha in prostate cancer. Recently, detection of AR aberration in cell-free DNA as well as early 18F-fluorocholine positron emission tomography/computed tomography (FCH-PET/CT) were associated with outcome in metastatic castration-resistant prostate cancer (mCRPC) patients treated with abiraterone and enzalutamide. We aimed to make a direct comparison between circulating AR copy number (CN) and choline uptake at FCH-PET/CT...
November 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29137875/contribution-of-11-c-choline-pet-ct-in-prostate-carcinoma-biochemical-relapse-with-serum-psa-level-below-1-ng-ml
#14
F J Gómez-de la Fuente, I Martínez-Rodríguez, M de Arcocha-Torres, R Quirce, J Jiménez-Bonilla, N Martínez-Amador, I Banzo
OBJECTIVE: (11)C-choline PET/CT has demonstrated good results in the restaging of prostate cancer (PCa) with high serum prostate specific antigen (PSA), but its use in patients with low serum PSA is controversial. Our aim was to evaluate the contribution of (11)C-choline PET/CT in patients with PCa, biochemical relapse and PSA <1 ng/ml. MATERIAL AND METHOD: Fifty consecutive patients (mean age: 65.9±5.6 years) with biochemical relapse of PCa and serum PSA <1ng/ml were evaluated retrospectively...
November 11, 2017: Revista Española de Medicina Nuclear e Imagen Molecular
https://www.readbyqxmd.com/read/29137414/salvage-lymph-node-dissection-after-68-ga-psma-or-18-f-fec-pet-ct-for-nodal-recurrence-in-prostate-cancer-patients
#15
Annika Herlemann, Alexander Kretschmer, Alexander Buchner, Alexander Karl, Stefan Tritschler, Lina El-Malazi, Wolfgang P Fendler, Vera Wenter, Harun Ilhan, Peter Bartenstein, Christian G Stief, Christian Gratzke
The management of patients with biochemical recurrence (BCR) after definitive treatment for prostate cancer remains controversial. Our aim was to determine survival rates and complications of salvage lymph node dissection (sLND) in patients with recurrent prostate cancer after radical prostatectomy, while evaluating biochemical response (BR) with two different positron emission tomography/computed tomography (PET/CT) tracers used for preoperative imaging. sLND was performed in 104 patients diagnosed with isolated nodal recurrence on either (18)F-fluoroethylcholine ((18)F-FEC) or (68)Ga-PSMA-HBED-CC ((68)Ga-PSMA) PET/CT...
October 13, 2017: Oncotarget
https://www.readbyqxmd.com/read/29134231/patterns-of-relapse-as-determined-by-68-ga-psma-ligand-pet-ct-after-radical-prostatectomy-importance-for-tailoring-and-individualizing-treatment
#16
Christoph Henkenberens, Thorsten Derlin, Frank M Bengel, Tobias L Ross, Hans-Jürgen Wester, Katja Hueper, Markus A Kuczyk, Hans Christiansen, Christoph A von Klot
PURPOSE: To evaluate the patterns of relapse and impact on the intended treatment when using (68)Ga-prostate-specific membrane antigen (PSMA) ligand positron emission tomography/computed tomography (PET/CT) imaging for restaging of disease in patients with biochemical relapse after radical prostatectomy (RP) before salvage radiotherapy (sRT). METHODS: In all, 39 patients with biochemical recurrence after RP who had no primary indication for adjuvant RT due to the absence of biologically unfavorable disease (e...
November 13, 2017: Strahlentherapie und Onkologie: Organ der Deutschen Röntgengesellschaft ... [et Al]
https://www.readbyqxmd.com/read/29133818/searching-for-prostate-cancer-by-fully-automated-magnetic-resonance-imaging-classification-deep-learning-versus-non-deep-learning
#17
Xinggang Wang, Wei Yang, Jeffrey Weinreb, Juan Han, Qiubai Li, Xiangchuang Kong, Yongluan Yan, Zan Ke, Bo Luo, Tao Liu, Liang Wang
Prostate cancer (PCa) is a major cause of death since ancient time documented in Egyptian Ptolemaic mummy imaging. PCa detection is critical to personalized medicine and varies considerably under an MRI scan. 172 patients with 2,602 morphologic images (axial 2D T2-weighted imaging) of the prostate were obtained. A deep learning with deep convolutional neural network (DCNN) and a non-deep learning with SIFT image feature and bag-of-word (BoW), a representative method for image recognition and analysis, were used to distinguish pathologically confirmed PCa patients from prostate benign conditions (BCs) patients with prostatitis or prostate benign hyperplasia (BPH)...
November 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29133278/imaging-for-the-detection-of-locoregional-recurrences-in-biochemical-progression-after-radical-prostatectomy-a-systematic-review
#18
REVIEW
Kristina Sandgren, Philippe Westerlinck, Joakim H Jonsson, Lennart Blomqvist, Camilla Thellenberg Karlsson, Tufve Nyholm, Piet Dirix
CONTEXT: Local and regional recurrence after radical prostatectomy (RP) can be treated using salvage radiotherapy (SRT). If the recurrence can be delineated on diagnostic imaging, this could allow for increasingly individualized SRT. OBJECTIVE: This systematic review aimed at evaluating the evidence regarding the usefulness of positron emission tomography (PET) and magnetic resonance imaging (MRI) in identifying local and regional recurrences, with the aim to further individualize the SRT treatment...
November 10, 2017: European Urology Focus
https://www.readbyqxmd.com/read/29132714/psma-rads-version-1-0-a-step-towards-standardizing-the-interpretation-and-reporting-of-psma-targeted-pet-imaging-studies
#19
EDITORIAL
Steven P Rowe, Kenneth J Pienta, Martin G Pomper, Michael A Gorin
The use of [(18)F]- and [(68)Ga]-labeled inhibitors of prostate-specific membrane antigen (PSMA) for positron emission tomography (PET) imaging of prostate cancer is now widespread. We have proposed a reporting and data system called PSMA-RADS version 1.0, which is a framework for classifying PSMA-targeted PET scans and individual findings into categories that reflect the likelihood of the presence of prostate cancer.
November 10, 2017: European Urology
https://www.readbyqxmd.com/read/29132644/delineating-sites-of-failure-following-post-prostatectomy-radiation-treatment-using-68-ga-psma-pet
#20
Keelan Byrne, Thomas Eade, Andrew Kneebone, Linxin Guo, Ed Hsiao, Geoff Schembri, Carolyn Kwong, Julia Hunter, Louise Emmett, George Hruby
PURPOSE: To identify sites of failure with (68)Ga-PSMA-PET (PSMA-PET) imaging in patients who have Biochemical Failure (BF) following post-prostatectomy radiotherapy. MATERIAL AND METHODS: Between June 2006 and January 2016, 409 men received post prostatectomy intensity modulated radiation treatment (IMRT) with protocolised planning. 310 patients received radiation treatment (RT) to the Prostate Fossa (PF) alone and 99 patients received RT to PF and pelvic lymphatics (PF + LN) usually in combination with androgen deprivation (AD) therapy...
November 10, 2017: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
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