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https://www.readbyqxmd.com/read/29324926/risk-stratification-and-staging-in-prostate-cancer-with-prostatic-specific-membrane-antigen-pet-ctobjective-a-one-stop-shop
#1
Manoj Gupta, Partha Sarathi Choudhury, Sudhir Rawal, Harish Chandra Goel, Amitabh Singh, Vineet Talwar, Saroj Kumar Sahoo
OBJECTIVE: Current imaging modalities for prostate cancer (PC) had limitations for risk stratification and staging. Magnetic resonance imaging (MRI) frequently underestimated lymphatic metastasis while bone scintigraphy often had diagnostic dilemmas. Prostatic specific membrane antigen (PSMA) positron emission tomography-computed tomography (PET/CT) has been remarkable in diagnosing PC recurrence and staging. We hypothesized it can become one-stop-shop for initial risk stratification and staging...
September 2017: Hellenic Journal of Nuclear Medicine
https://www.readbyqxmd.com/read/29322625/variations-in-dosimetric-distribution-and-plan-complexity-with-collimator-angles-in-hypofractionated-volumetric-arc-radiotherapy-for-treating-prostate-cancer
#2
Ming-Hsien Li, Sheng-Fang Huang, Chih-Chieh Chang, Jang-Chun Lin, Jo-Ting Tsai
PURPOSE: Hypofractionated radiotherapy can reduce treatment durations and produce effects identical to those of conventionally fractionated radiotherapy for treating prostate cancer. Volumetric arc radiotherapy (VMAT) can decrease the treatment machine monitor units (MUs). Previous studies have shown that VMAT with multileaf collimator (MLC) rotation exhibits better target dose distribution. Thus, VMAT with MLC rotation warrants further investigation. METHODS AND MATERIALS: Ten patients with prostate cancer were included in this study...
January 11, 2018: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/29317377/multiparametric-mri-for-the-detection-of-local-recurrence-of-prostate-cancer-in-the-setting-of-biochemical-recurrence-after-low-dose-rate-brachytherapy
#3
Luca F Valle, Matthew D Greer, Joanna H Shih, Tristan Barrett, Yan Mee Law, Andrew B Rosenkrantz, Haytham Shebel, Akhil Muthigi, Daniel Su, Maria J Merino, Bradford J Wood, Peter A Pinto, Andra V Krauze, Aradhana Kaushal, Peter L Choyke, Barış Türkbey, Deborah E Citrin
PURPOSE: Prostate multiparametric magnetic resonance imaging (mpMRI) has utility in detecting post-radiotherapy local recurrence. We conducted a multireader study to evaluate the diagnostic performance of mpMRI for local recurrence after low dose rate (LDR) brachytherapy. METHODS: A total of 19 patients with biochemical recurrence after LDR brachytherapy underwent 3T endorectal coil mpMRI with T2-weighted imaging, dynamic contrast-enhanced imaging (DCE) and diffusion-weighted imaging (DWI) with pathologic confirmation...
January 2018: Diagnostic and Interventional Radiology: Official Journal of the Turkish Society of Radiology
https://www.readbyqxmd.com/read/29315854/predictive-factors-of-biochemical-recurrence-after-radical-prostatectomy-for-high-risk-prostate-cancer
#4
Yukiko Murata, Katsunori Tatsugami, Masahiro Yoshikawa, Masumitsu Hamaguchi, Shigetomo Yamada, Yusuke Hayakawa, Kouhei Ueda, Seiya Momosaki, Naotaka Sakamoto
OBJECTIVE: To identify risk factors of biochemical recurrence after radical prostatectomy in high-risk patients. METHODS: A total of 191 high-risk prostate cancer patients according to the D'Amico classification treated with radical prostatectomy at a single institution between April 2000 and December 2013 were enrolled. The pathological evaluation including intraductal carcinoma of prostate was reassessed, and the clinical and pathological risk factors of biochemical recurrence were analyzed...
January 8, 2018: International Journal of Urology: Official Journal of the Japanese Urological Association
https://www.readbyqxmd.com/read/29315711/histological-histochemical-and-ultrastructural-investigation-of-the-male-copulatory-apparatus-of-haminoea-navicula-gastropoda-cephalaspidea
#5
Alexandre Lobo-da-Cunha, Ângela Alves, Elsa Oliveira, Manuel António E Malaquias
Due to its biological and systematic importance, the morphology and function of the male copulatory apparatus of Haminoea navicula, a Cephalaspidea gastropod mollusk, was investigated by light and electron microscopy. These systems are poorly understood in haminoids, but are often used in the taxonomy of the genus. In H. navicula, the male copulatory apparatus comprises the penis within a penial sheath, a seminal duct and the prostate with two lobes. The penis is a muscular structure with a tip covered by spikes formed by muscular cells...
January 8, 2018: Journal of Morphology
https://www.readbyqxmd.com/read/29305203/seminal-vesicle-abscess-an-unusual-complication-following-vasectomy
#6
Néha Sihra, Mohamed Aboelsoud, Abisola Oliyide, Andrew Counsell, Zara Gall
No abstract text is available yet for this article.
January 2, 2018: Urology
https://www.readbyqxmd.com/read/29301747/an-rna-based-digital-circulating-tumor-cell-signature-is-predictive-of-drug-response-and-early-dissemination-in-prostate-cancer
#7
David T Miyamoto, Richard J Lee, Mark Kalinich, Joseph LiCausi, Yu Zheng, Tianqi Chen, John D Milner, Erin Emmons, Uyen Ho, Katherine Broderick, Erin Silva, Sarah Javaid, Tanya Todorova Kwan, Xin Hong, Douglas M Dahl, Francis J McGovern, Jason A Efstathiou, Matthew R Smith, Lecia V Sequist, Ravi Kapur, Chin-Lee Wu, Shannon L Stott, David T Ting, Anita Giobbie-Hurder, Mehmet Toner, Shyamala Maheswaran, Daniel A Haber
Blood-based biomarkers are critical in metastatic prostate cancer, where characteristic bone metastases are not readily sampled, and they may enable risk stratification in localized disease. We established a sensitive and high-throughput strategy for analyzing prostate circulating tumor cells (CTCs) using microfluidic cell enrichment followed by digital quantitation of prostate-derived transcripts. In a prospective study of 27 metastatic castration-resistant prostate cancer patients treated with first-line abiraterone, pretreatment elevation of the digital CTCM Score identifies a high risk population with poor overall survival (HR 6...
January 4, 2018: Cancer Discovery
https://www.readbyqxmd.com/read/29300908/sex-and-age-specific-impact-of-erk-loss-within-the-pituitary-gonadotrope-in-mice
#8
Jessica L Brown, Jianjun Xie, Miguel Brieno Enriquez, Jennifer Sones, Cynthia N Angulo, Ulrich Boehm, Andrew Miller, Chirine Toufaily, Ying Wang, Daniel J Bernard, Mark S Roberson
Extracellular signal-regulated kinase (ERK) signaling regulates hormone action in the reproductive axis, but specific mechanisms have yet to be completely elucidated. In the present study, ERK1 null and ERK2 floxed mice were combined with a gonadotrope-specific Cre (GRIC) driver. Female ERK double knockout (ERKdko) animals were hypogonadotropic, resulting in anovulation and complete infertility. Transcript levels of four gonadotrope-specific genes (GnRHR and the three gonadotropin subunits) were reduced in pituitaries at estrus in ERKdko females and the post-castration response to endogenous GnRH hyper-stimulation was blunted...
January 3, 2018: Endocrinology
https://www.readbyqxmd.com/read/29297497/prostate-cancer-reporting-and-staging-needle-biopsy-and-radical-prostatectomy-specimens
#9
David J Grignon
Prostatic adenocarcinoma remains the most common cancer affecting men. A substantial majority of patients have the diagnosis made on thin needle biopsies, most often in the absence of a palpable abnormality. Treatment choices ranging from surveillance to radical prostatectomy or radiation therapy are largely driven by the pathologic findings in the biopsy specimen. The first part of this review focuses on important morphologic parameters in needle biopsy specimens that are not covered in the accompanying articles...
January 2018: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/29297486/mesenchymal-tumors-of-the-prostate
#10
Jesse K McKenney
Mesenchymal tumors of the prostate are rare but often cause considerable diagnostic difficulty when encountered. These may be either benign or malignant and can arise within the prostate gland or in adjacent tissues. This review covers prostatic stromal proliferations (prostatic stromal tumor of uncertain malignant potential and stromal sarcoma), solitary fibrous tumor, myofibroblastic proliferations, smooth muscle neoplasms (leiomyoma and leiomyosarcoma), gastrointestinal stromal tumor, schwannoma, rhabdomyosarcoma, sarcomatoid carcinoma, postradiation sarcoma, and mixed epithelial stromal tumor of the seminal vesicle...
January 2018: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/29290572/phase-1-2-study-of-hypofractionated-intensity-modulated-radiation-therapy-for-prostate-cancer-including-simultaneously-integrated-boost
#11
Michael G Chang, Nitai Mukhopadhyay, Diane Holdford, Vicki Skinner, Siddharth Saraiya, Drew Moghanaki, Mitchell S Anscher
PURPOSE: This study evaluates the safety and efficacy of moderately hypofractionated radiation therapy (RT) with simultaneous integrated boost (HSIB) intensity modulated RT (IMRT) that includes coverage of the seminal vesicles (SVs) and pelvic lymph nodes (LNs). METHODS AND MATERIALS: Men with localized prostate cancer were prospectively enrolled in a phase 1/2 trial to receive HSIB-IMRT to the prostate, ± SV, ± pelvic LN using a risk-based method. Low-risk patients received 69...
September 18, 2017: Practical Radiation Oncology
https://www.readbyqxmd.com/read/29288003/tertiary-gleason-pattern-in-radical-prostatectomy-specimens-is-associated-with-worse-outcomes-than-the-next-higher-gleason-score-group-in-localized-prostate-cancer
#12
Mehmet Özsoy, David D'Andrea, Marco Moschini, Beat Foerster, Mohammad Abufaraj, Romain Mathieu, Alberto Briganti, Pierre I Karakiewicz, Morgan Roupret, Christian Seitz, Anna Katarzyna Czech, Martin Susani, Shahrokh F Shariat
AIM: To assess the predictive value of TGP on biochemical recurrence (BCR) and its association with clinicopathological outcomes in a large, multicenter cohort of patients with localized prostate cancer (PCa) treated with radical prostatectomy (RP). MATERIALS AND METHODS: Records of 6,041 patients who were treated with RP between 2000 and 2011 for clinically nonmetastatic PCa were, retrospectively, analyzed from prospectively collected datasets. BCR-free survival rates were assessed using univariable and multivariable cox-regression analyses...
December 26, 2017: Urologic Oncology
https://www.readbyqxmd.com/read/29280452/conventional-versus-hypofractionated-radiation-therapy-for-localized-or-locally-advanced-prostate-cancer-a-systematic-review-and-meta-analysis-along-with-therapeutic-implications
#13
REVIEW
Niloy R Datta, Emanuel Stutz, Susanne Rogers, Stephan Bodis
PURPOSE: A systematic review and meta-analysis were conducted to evaluate the therapeutic outcomes of conventional radiation therapy (CRT) and hypofractionated radiation therapy (HRT) for localized or locally advanced prostate cancer (LLPCa). METHODS AND MATERIALS: A total of 599 abstracts were extracted from 5 databases and screened in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. Only phase III trials randomized between CRT and HRT in LLPCa with a minimum of 5 years of follow-up data were considered...
November 1, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/29279147/seminal-vesicle-invasion-on-multi-parametric-magnetic-resonance-imaging-correlation-with-histopathology
#14
Nikolaos Grivas, Karel Hinnen, Jeroen de Jong, Wilma Heemsbergen, Luc Moonen, Thelma Witteveen, Henk van der Poel, Stijn Heijmink
OBJECTIVES: The pre-treatment risk of seminal vesicle (SV) invasion (SVI) from prostate cancer is currently based on nomograms which include clinical stage (cT), Gleason score (GS) and prostate-specific antigen (PSA). The aim of our study was to evaluate the staging accuracy of 3T (3T) multi-parametric (mp) Magnetic Resonance Imaging (MRI) by comparing the imaging report of SVI with the tissue histopathology. The additional value in the existing prediction models and the role of radiologists' experience were also examined...
January 2018: European Journal of Radiology
https://www.readbyqxmd.com/read/29276994/transcriptomic-analysis-reveals-transgenerational-effect-of-hypoxia-on-the-neural-control-of-testicular-functions
#15
Keng Po Lai, Jing Woei Li, Simon Yuan Wang, Miles Teng Wan, Ting Fung Chan, Wing Yee Lui, Doris Wai-Ting Au, Rudolf Shiu-Sun Wu, Richard Yuen-Chong Kong
There are over 400 hypoxic zones in the ocean worldwide. Both laboratory and field studies have shown that hypoxia causes endocrine disruption and reproductive impairments in vertebrates. More importantly, our recent study discovered that parental (F0) hypoxia exposure resulted in the transgenerational impairment of sperm quality in the F2 generation through the epigenetic regulation of germ cells. In the present study, we aim to test the hypothesis that the brain, as the major regulator of the brain-pituitary-gonad (BPG) axis, is also involved in the observed transgenerational effect...
December 16, 2017: Aquatic Toxicology
https://www.readbyqxmd.com/read/29245427/species-of-i-macrostomum-i-macrostomorpha-macrostomidae-from-the-coastal-region-of-lima-peru-with-comments-on-i-m-rostratum-i-papi-1951
#16
Jhoe Reyes, Francisco Brusa
Species of Macrostomum are present in almost all regions of the world. These flatworms occur in different kinds of environments, from freshwater to marine ecosystems. Although Peru is considered one of the megadiverse countries in South America, little is known about freshwater microturbellarians in this country. Here we report the presence of M. rostratum Papi, 1951 for the first time in Peru, in a coastal brackish water wetland, and that of M. quiritium Beklemischev, 1951 and M. tuba Graff, 1882 in an inland portion of a river near the city of Lima...
December 5, 2017: Zootaxa
https://www.readbyqxmd.com/read/29242725/68ga-psma-pet-ct-imaging-predicting-intraprostatic-tumor-extent-extracapsular-extension-and-seminal-vesicle-invasion-prior-to-radical-prostatectomy-in-patients-with-prostate-cancer
#17
Christoph-Alexander J von Klot, Axel S Merseburger, Alena Böker, Sebastian Schmuck, Tobias L Ross, Frank M Bengel, Markus A Kuczyk, Christoph Henkenberens, Hans Christiansen, Hans-Jürgen Wester, Wiebke Solass, Marcel Lafos, Thorsten Derlin
Purpose: 68Ga-labeled prostate-specific membrane antigen (PSMA) ligand positron emission tomography/computed tomography (PET/CT) has shown promising results in patients with biochemical recurrence after primary therapy for prostate cancer. In this study, we evaluated the usefulness of PSMA I&T (imaging and therapy) PET/CT prior to radical prostatectomy. Methods: The study population consisted of 21 patients with prostate cancer who underwent 68Ga-PSMA I&T PET/CT before either open or laparoscopic radical prostatectomy...
December 2017: Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/29239112/male-reproductive-tract-and-spermatozoa-ultrastructure-in-the-grasshopper-orphulella-punctata-de-geer-1773-insecta-orthoptera-caelifera
#18
Daniela Santos Martins Silva, Jamile Fernanda Silva Cossolin, Marcelo Ribeiro Pereira, José Lino-Neto, Carlos Frankl Sperber, José Eduardo Serrão
Identification Orphulellini grasshoppers (Acrididae: Gomphocerinae) species has been difficult due to high polymorphism rate. Orphulella Giglio-Tos, 1894 is a genus with widespread geographical distribution and poor descriptions. Orphulella punctata (De Geer, 1773) has an extensive record of occurrence and available information about the phallic complex, however, there is poor data describing other parts of the male reproductive tract. The objective of this study was characterizes the internal organs of the male reproductive system and spermatozoa of O...
December 14, 2017: Microscopy Research and Technique
https://www.readbyqxmd.com/read/29230007/elevated-preoperative-neutrophil-lymphocyte-ratio-predicts-upgrading-at-radical-prostatectomy
#19
Mehmet Özsoy, Marco Moschini, Harun Fajkovic, Francesco Soria, Christian Seitz, Tobias Klatte, Kilian Gust, Alberto Briganti, Pierre I Karakiewicz, Morgan Roupret, Gero Kramer, Shahrokh F Shariat
BACKGROUND: Neutrophil-lymphocyte ratio (NLR) is a widely used, representative marker of systemic inflammatory response within the body. NLR can be calculated from simple, inexpensive peripheral blood samples. High NLR is a negative prognostic factor in a variety of malignancies including urological tumors. In this study, we aim to assess the prognostic value of preoperative neutrophil- lymphocyte ratio (NLR) in patients treated with radical prostatectomy (RP) for localized prostate cancer (PCa)...
December 11, 2017: Prostate Cancer and Prostatic Diseases
https://www.readbyqxmd.com/read/29228232/external-validation-of-two-web-based-postoperative-nomograms-predicting-the-probability-of-early-biochemical-recurrence-after-radical-prostatectomy-a-retrospective-cohort-study
#20
Kei Yoneda, Takanobu Utsumi, Takatoshi Somoto, Ken Wakai, Ryo Oka, Takumi Endo, Masashi Yano, Naoto Kamiya, Nobuyuki Hiruta, Hiroyoshi Suzuki
The present study aimed to validate and compare the predictive accuracies of the Memorial Sloan Kettering Cancer Center (MSKCC) and Johns Hopkins University (JHU) web-based postoperative nomograms for predicting early biochemical recurrence (BCR) after radical prostatectomy (RP) and to analyze clinicopathological factors to predict early BCR after RP using our dataset. The c-index was 0.72 (95% confidence (CI): 0.61-0.83) for the MSKCC nomogram and 0.71 (95% CI: 0.61-0.81) for the and JHU nomogram, demonstrating fair performance in the Japanese population...
December 8, 2017: Japanese Journal of Clinical Oncology
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