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https://www.readbyqxmd.com/read/28110348/erratum-to-a-rare-case-of-rectal-carcinoma-and-prostate-carcinoma-with-coexistent-paget-s-disease-mimicking-bone-metastases-in-both-18f-fdg-and-68ga-psma-pet-ct
#1
Arun Sasikumar, Ajith Joy, M R A Pillai, Vikraman Raman, Arun Vasudevan, Jayaprakash Madhavan
No abstract text is available yet for this article.
January 21, 2017: European Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/28103574/68ga-psma-11-pet-ct-for-prostate-cancer-staging-and-risk-stratification-in-chinese-patients
#2
Shiming Zang, Guoqiang Shao, Can Cui, Tian-Nv Li, Yue Huang, Xiaochen Yao, Qiu Fan, Zejun Chen, Jin Du, Ruipeng Jia, Hongbin Sun, Zichun Hua, Jun Tang, Feng Wang
We evaluated the clinical utility of 68Ga-PSMA-11 PET/CT for staging and risk stratification of treatment-naïve prostate cancer (PCa) and metastatic castrate-resistant prostate cancer (mCRPC). Twenty-two consecutive patients with treatment-naïve PCa and 18 with mCRPC were enrolled. 68Ga-PSMA-11 PET/CT and magnetic resonance imaging (MRI) were performed for the evaluation of primary prostatic lesions, and bone scans were used for evaluation bone metastasis. Among the 40 patients, 37 (92.5% [22 treatment-naïve PCa, 15 mCRPC]) showed PSMA-avid lesions on 68Ga-PSMA-11 images...
January 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/28102507/-44-sc-psma-617-for-radiotheragnostics-in-tandem-with-177-lu-psma-617-preclinical-investigations-in-comparison-with-68-ga-psma-11-and-68-ga-psma-617
#3
Christoph A Umbricht, Martina Benešová, Raffaella M Schmid, Andreas Türler, Roger Schibli, Nicholas P van der Meulen, Cristina Müller
BACKGROUND: The targeting of the prostate-specific membrane antigen (PSMA) is of particular interest for radiotheragnostic purposes of prostate cancer. Radiolabeled PSMA-617, a 1,4,7,10-tetraazacyclododecane-N,N',N'',N'''-tetraacetic acid (DOTA)-functionalized PSMA ligand, revealed favorable kinetics with high tumor uptake, enabling its successful application for PET imaging ((68)Ga) and radionuclide therapy ((177)Lu) in the clinics. In this study, PSMA-617 was labeled with cyclotron-produced (44)Sc (T 1/2 = 4...
December 2017: EJNMMI Research
https://www.readbyqxmd.com/read/28074210/diagnostic-value-of-additional-68-ga-psma-pet-before-223-ra-dichloride-therapy-in-patients-with-metastatic-prostate-carcinoma
#4
Axel Bräuer, Kambiz Rahbar, Julia Konnert, Martin Bögemann, Lars Stegger
PURPOSE: Medical imaging plays an important role in selecting patients with metastatic castration-resistant prostate cancer for (223)Ra-dichloride therapy of bone metastases. The purpose of this study was to investigate whether (68)Ga-PSMA-PET has incremental value over conventional imaging for selecting patients suitable for (223)Ra-dichloride therapy. METHODS: In 27 consecutive patients referred for (223)Ra-dichloride therapy additional (68)Ga-PSMA-PET/CT was performed and tracer distribution was evaluated systematically with respect to the detection of visceral metastases and bone metastases with inadequate uptake on bone scintigraphy...
January 11, 2017: Nuklearmedizin. Nuclear Medicine
https://www.readbyqxmd.com/read/28072616/gastrointestinal-stromal-tumor-showing-intense-tracer-uptake-on-psma-pet-ct
#5
Benjamin Noto, Matthias Weckesser, Boris Buerke, Michaela Pixberg, Nemanja Avramovic
A 70-year-old man with suspected prostate cancer was referred for Ga-PSMA-HBED-CC PET/CT (short PSMA PET/CT) for staging of tumor extent. Apart from vivid tracer uptake in the prostate gland and osseous metastasis, PSMA PET/CT revealed a large soft tissue mass with calcifications in the left upper abdomen showing intense tracer uptake. Histologic examination revealed the mass to be a gastrointestinal stromal tumor.
January 9, 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/28065536/a-rare-case-of-epididymal-metastasis-after-radical-prostatectomy-detected-by-68ga-psma-pet-ct
#6
Giulia Polverari, Francesco Ceci, Tiziano Graziani, Cesare Cozzarini, Paolo Castellucci, Stefano Fanti
No abstract text is available yet for this article.
December 22, 2016: Clinical Genitourinary Cancer
https://www.readbyqxmd.com/read/28063603/prostate-specific-membrane-antigen-targeted-ligand-positron-emission-tomography-computed-tomography-and-immunohistochemical-findings-in-a-patient-with-synchronous-metastatic-penile-and-prostate-cancer
#7
Michael Froehner, Friederike Kuithan, Klaus Zöphel, Ulrike Heberling, Michael Laniado, Manfred P Wirth
A 68-year-old man presented with synchronous metastatic penile and prostate cancer. 68Ga-labeled prostate-specific membrane antigen-targeted ligand positron emission tomography/computed tomography (PSMA-PET/CT) revealed tracer uptake in inguinal, pelvic, and retroperitoneal metastases. Lymph node biopsies and immunohistochemical staining revealed that both cancers involved the lymph nodes and expressed PSMA. In the deposits of penile squamous cell carcinoma, PSMA expression was seen in tumor vessels and may explain the PSMA-PET/CT positivity of inguinal nodes involved in squamous cell carcinoma...
January 4, 2017: Urology
https://www.readbyqxmd.com/read/28063300/a-psma-targeted-theranostic-agent-for-photodynamic-therapy
#8
Ying Chen, Samit Chatterjee, Ala Lisok, Il Minn, Mrudula Pullambhatla, Bryan Wharram, Yuchuan Wang, Jiefu Jin, Zaver M Bhujwalla, Sridhar Nimmagadda, Ronnie C Mease, Martin G Pomper
Prostate-specific membrane antigen (PSMA) is over-expressed in the epithelium of prostate cancer and in the neovasculature of many non-prostate solid tumors. PSMA has been increasingly used as a target for cancer imaging and therapy. Here we describe a low-molecular-weight theranostic photosensitizer, YC-9, for PSMA-targeted optical imaging and photodynamic therapy (PDT). YC-9 was synthesized by conjugating IRDye700DX N-hydroxysuccinimide (NHS) ester with a PSMA targeting Lys-Glu urea through a lysine-suberate linker in suitable yield...
December 18, 2016: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28062595/the-clinical-impact-of-additional-late-pet-ct-imaging-with-68ga-psma-11-hbed-cc-in-the-diagnosis-of-prostate-cancer
#9
Ali Afshar-Oromieh, Lars Peter Sattler, Walter Mier, Boris Hadaschik, Jürgen Debus, Tim Holland-Letz, Klaus Kopka, Uwe Haberkorn
PURPOSE: While Positron Emission Tomography/Computed Tomography (PET/CT) with (68)Ga-PSMA-11 in the diagnosis of prostate cancer (PCa) is routinely performed at 1h post injection (p.i.), later scans may be beneficial since most lesions present with higher uptake and contrast. This evaluation aimed to investigate the clinical impact of additional late (68)Ga-PSMA-11-PET/CT. METHODS: Between 2011 and 2016, 112 patients with PCa who received early (at 1h p.i.) and late (at 3h p...
January 6, 2017: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/28056439/fe3o4-nanoparticles-on-graphene-oxide-sheets-for-isolation-and-ultrasensitive-amperometric-detection-of-cancer-biomarker-proteins
#10
Mohamed Sharafeldin, Gregory W Bishop, Snehasis Bhakta, Abdelhamid El-Sawy, Steven L Suib, James F Rusling
Ultrasensitive mediator-free electrochemical detection for biomarker proteins was achieved at low cost using a novel composite of Fe3O4 nanoparticles loaded onto graphene oxide (GO) nano-sheets (Fe3O4@GO). This paramagnetic Fe3O4@GO composite (1µm size range) was decorated with antibodies against prostate specific antigen (PSA) and prostate specific membrane antigen (PSMA), and then used to first capture these biomarkers and then deliver them to an 8-sensor detection chamber of a microfluidic immunoarray. Screen-printed carbon sensors coated with electrochemically reduced graphene oxide (ERGO) and a second set of antibodies selectively capture the biomarker-laden Fe3O4@GO particles, which subsequently catalyze hydrogen peroxide reduction to detect PSA and PSMA...
December 27, 2016: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/28054089/separation-and-dual-detection-of-prostate-cancer-cells-and-protein-biomarkers-using-a-microchip-device
#11
Wanfeng Huang, Chun-Li Chang, Norman D Brault, Onur Gur, Zhe Wang, Shadia I Jalal, Philip S Low, Timothy L Ratliff, Roberto Pili, Cagri A Savran
Current efforts for the detection of prostate cancer using only prostate specific antigen are not ideal and indicate a need to develop new assays - using multiple targets - that can more accurately stratify disease states. We previously introduced a device capable of the concurrent detection of cellular and molecular markers from a single sample fluid. Here, an improved design, which achieves affinity as well as size-based separation of captured targets using antibody-conjugated magnetic beads and a silicon chip containing micro-apertures, is presented...
January 5, 2017: Lab on a Chip
https://www.readbyqxmd.com/read/28051996/full-preclinical-validation-of-the-123i-labeled-anti-psma-antibody-fragment-scfvd2b-for-prostate-cancer-imaging
#12
Barbara Frigerio, Gerben Franssen, Elena Luison, Alessandro Satta, Ettore Seregni, Marco Colombatti, Giulio Fracasso, Riccardo Valdagni, Delia Mezzanzanica, Otto Boerman, Silvana Canevari, Mariangela Figini
PURPOSE: In the context of prostate cancer (PCa) imaging, the aim of this study was to optimize (in vitro) the specificity and assess preclinically (in vivo) the tumor targeting properties of the 123I-scFvD2B antibody specific for prostate-specific membrane antigen (PSMA). EXPERIMENTAL DESIGN: The 123I-labeling conditions of the antibody fragment scFvD2B, produced in an eukaryotic system under GMP-compliant conditions, were optimized and assessed for purity and immunoreactivity...
December 30, 2016: Oncotarget
https://www.readbyqxmd.com/read/28045734/prostate-specific-membrane-antigen-pet-ct-uptake-in-lymph-nodes-with-active-sarcoidosis
#13
André Henrique Dias, Mikkel Holm Vendelbo, Kirsten Bouchelouche
We describe 2 cases of Ga-PSMA PET/CT in prostate cancer patients. Both cases demonstrated symmetrical bilateral involvement of mediastinal and hilar lymph nodes besides findings in relation with prostatic disease. In both cases, endobronchial ultrasound-guided biopsy showed that the involvement of the thoracic lymph nodes was caused by nonnecrotic granulomas compatible with sarcoidosis. The cases demonstrated that increased Ga-PSMA uptake can be seen in lymph nodes with active sarcoidosis, with images mimicking those well known from FDG PET/CT...
December 30, 2016: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/28045729/68ga-psma-pet-ct-in-a-rare-case-of-metastatic-adenocarcinoma-prostate-presenting-as-numb-chin-syndrome
#14
Arun Sasikumar, Ajith Joy, M R A Pillai, Renuka Gopal, Boben Thomas
A 68-year-old man presented with right-side facial numbness. MRI showed an extra-axial mass infiltrating the right temporal bone. It was debulked surgically, and histopathology revealed metastatic adenocarcinoma. Ga PSMA PET/CT done in view of increased PSA levels and clinically suspicious hard lesion in prostate showed primary lesion in left side of prostate with metastases to the right temporal bone. Primary carcinoma of the prostate and metastases to the right temporal bone were proven histopathologically...
December 30, 2016: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/28042330/comparison-of-68-ga-hbed-cc-psma-pet-ct-and-multiparametric-mri-for-gross-tumour-volume-detection-in-patients-with-primary-prostate-cancer-based-on-slice-by-slice-comparison-with-histopathology
#15
Constantinos Zamboglou, Vanessa Drendel, Cordula A Jilg, Hans C Rischke, Teresa I Beck, Wolfgang Schultze-Seemann, Tobias Krauss, Michael Mix, Florian Schiller, Ulrich Wetterauer, Martin Werner, Mathias Langer, Michael Bock, Philipp T Meyer, Anca L Grosu
PURPOSE: The exact detection and delineation of the intraprostatic tumour burden is crucial for treatment planning in primary prostate cancer (PCa). We compared (68)Ga-HBED-CC-PSMA PET/CT with multiparametric MRI (mpMRI) for diagnosis and tumour delineation in patients with primary PCa based on slice by slice correlation with histopathological reference material. METHODOLOGY: Seven patients with histopathologically proven primary PCa underwent (68)Ga-HBED-CC-PSMA PET/CT and MRI followed by radical prostatectomy...
2017: Theranostics
https://www.readbyqxmd.com/read/28040309/delineating-biochemical-failure-with-68-ga-psma-pet-following-definitive-external-beam-radiation-treatment-for-prostate-cancer
#16
George Hruby, Thomas Eade, Andrew Kneebone, Louise Emmett, Lesley Guo, Bao Ho, Ed Hsiao, Geoff Schembri, Julia Hunter, Carol Kwong
BACKGROUND AND PURPOSE: We investigated the role of (68)Ga-PSMA-PET (PSMA) to determine the location of disease recurrence in those with a rising PSA following definitive external beam radiation treatment (EBRT). MATERIALS AND METHODS: 538men were treated with image guided EBRT to a dose of 78 or 82Gy between 2007 and 2014. Patients at least 24months post EBRT with biochemical failure (nadir+2) underwent PSMA scanning. Local recurrence (LR) was defined as increased uptake within the prostate or seminal vesicles...
December 28, 2016: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/28034291/radiopharmaceuticals-for-diagnosis-and-therapy-of-neuroendocrine-differentiated-prostate-cancer
#17
Giampiero Giovacchini, Elisabetta Giovannini, Mattia Riondato, Andrea Ciarmiello
Neuroendocrine differentiation of prostate cancer (PCa) is a relatively frequent event, generally understudied, that carries important prognostic information. It is most frequently observed during the advanced stages of disease, when PCa has lost its sensitivity to androgen deprivation therapy or to chemotherapy, moderate to diffuse bone metastatic spread dominates the imaging scenario and it is responsible for painful clinical symptomatology. However, evidences indicate that neuroendocrine differentiation is a progressive phenomenon that starts at the very early part of the pathogenesis of cancer transformation contributing to it...
December 29, 2016: Current Radiopharmaceuticals
https://www.readbyqxmd.com/read/28033225/cerebellar-metastases-from-prostate-cancer-on-68ga-psma-pet-ct
#18
Mico Chan, Edward Hsiao, Jennifer Turner
Ga prostate-specific membrane antigen PET/CT is increasingly used to evaluate extent of disease in prostate carcinoma. Parenchymal brain metastases originating from prostate cancer have highly variable imaging appearance. We present a 77-year-old man with cerebellar metastasis from prostate cancer showing focal uptake on prostate-specific membrane antigen PET/CT.
December 28, 2016: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/28033223/incidental-detection-of-thyroid-metastases-from-renal-cell-carcinoma-using-68ga-psma-pet-ct-to-assess-prostate-cancer-recurrence
#19
Helle D Zacho, Julie B Nielsen, Katja Dettmann, Uwe Haberkorn, Lars J Petersen
Ga-PSMA PET/CT is increasingly used to assess prostate cancer. Avid Ga-PSMA uptake by thyroid cancer and renal cell carcinoma (RCC) has been reported in few cases. A 75-year-old man who received a diagnosis of RCC in 2006 and prostate cancer in 2009 presented with elevated prostate-specific antigen levels (0.7 ng/mL) following prostatectomy. Ga-PSMA PET/CT showed avid Ga-PSMA uptake in 1 pelvic and 1 retroperitoneal lymph node and focal Ga-PSMA accumulation in the thyroid. Excised retroperitoneal lymph node and thyroid tissues showed metastases from RCC, whereas the pelvic lymph node exhibited metastasis from prostate cancer...
December 28, 2016: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/28033219/68ga-psma-hbed-uptake-on-cervicothoracic-stellate-ganglia-a-common-pitfall-on-pet-ct
#20
Mohsen Beheshti, Alireza Rezaee, Werner Langsteger
Ga-PSMA-HBED PET/CT showed promising results in staging and restaging of prostate cancer. However, nonspecific uptake has been reported in the celiac ganglia. In this case series, we showed faint radiotracer uptake on upper thoracic region in the location of cervicothoracic (stellate) ganglia. This ganglion is located anterior to the transverse process of C7 vertebra, inferior to subclavian artery, and superior to the neck of the first rib.
December 28, 2016: Clinical Nuclear Medicine
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