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Radiology and Oncology

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https://www.readbyqxmd.com/read/30422804/image-guided-high-dose-rate-brachytherapy-versus-volumetric-modulated-arc-therapy-for-head-and-neck-cancer-a-comparative-analysis-of-dosimetry-for-target-volume-and-organs-at-risk
#1
Hironori Akiyama, Csilla Pesznyák, Dalma Béla, Örs Ferenczi, Tibor Major, Csaba Polgár, Zoltán Takácsi-Nagy
Background The aim of the study was to present dosimetric comparison of image guided high-dose-rate brachytherapy (IGBT) with volumetric modulated arc therapy (VMAT) for head and neck cancer regarding conformity of dose distribution to planning target volume (PTV) and doses to organs at risk (OARs). Patients and methods Thirty-eight consecutive patients with T1-4 mobile tongue, floor of mouth and base of tongue cancer treated with IGBT were selected. For these patients additional VMAT treatment plans were also prepared using identical computed tomography data...
November 12, 2018: Radiology and Oncology
https://www.readbyqxmd.com/read/30367810/localization-patterns-of-cathepsins-k-and-x-and-their-predictive-value-in-glioblastoma
#2
Barbara Breznik, Clara Limback, Andrej Porcnik, Andrej Blejec, Miha Koprivnikar Krajnc, Roman Bosnjak, Janko Kos, Cornelis J F Van Noorden, Tamara T Lah
Background Glioblastoma is a highly aggressive central nervous system neoplasm characterized by extensive infiltration of malignant cells into brain parenchyma, thus preventing complete tumor eradication. Cysteine cathepsins B, S, L and K are involved in cancer progression and are overexpressed in glioblastoma. We report here for the first time that cathepsin X mRNA and protein are also abundantly present in malignant glioma. Materials and methods Gene expression of cathepsins K and X was analyzed using publically-available tran-scriptomic datasets and correlated with glioma grade and glioblastoma subtype...
October 18, 2018: Radiology and Oncology
https://www.readbyqxmd.com/read/30367809/immune-recist-criteria-and-symptomatic-pseudoprogression-in-non-small-cell-lung-cancer-patients-treated-with-immunotherapy
#3
Martina Vrankar, Mojca Unk
Background Uncommon response during immunotherapy is a new challenging issue in oncology practice. Recently, new criteria for evaluation of response to immunotherapy immune response evaluation criteria in solid tumors (iRECIST) were accepted. According to iRECIST, worsening of performance status (PS) accompanied to pseudoprogression reflects most probably the true progression of the malignant disease. Methods A systematic review of the literature was made by using several electronic database with the following search criteria: symptomatic pseudoprogression, atypical response, immunotherapy and lung cancer...
October 18, 2018: Radiology and Oncology
https://www.readbyqxmd.com/read/30352044/ultrasonographic-changes-in-the-liver-tumors-as-indicators-of-adequate-tumor-coverage-with-electric-field-for-effective-electrochemotherapy
#4
Nina Boc, Ibrahim Edhemovic, Bor Kos, Maja M Music, Erik Brecelj, Blaz Trotovsek, Masa Bosnjak, Mihajlo Djokic, Damijan Miklavcic, Maja Cemazar, Gregor Sersa
Background The aim of the study was to characterize ultrasonographic (US) findings during and after electrochem-otherapy of liver tumors to determine the actual ablation zone and to verify the coverage of the treated tumor with a sufficiently strong electric field for effective electrochemotherapy. Patients and methods US findings from two representative patients that describe immediate and delayed tumor changes after electrochemotherapy of colorectal liver metastases are presented. Results The US findings were interrelated with magnetic resonance imaging (MRI)...
October 18, 2018: Radiology and Oncology
https://www.readbyqxmd.com/read/30265655/thyroid-cancer-detection-rate-and-associated-risk-factors-in-patients-with-thyroid-nodules-classified-as-bethesda-category-iii
#5
Magdalena Mileva, Bojana Stoilovska, Anamarija Jovanovska, Ana Ugrinska, Gordana Petrushevska, Slavica Kostadinova-Kunovska, Daniela Miladinova, Venjamin Majstorov
Background Ultrasound guided fine-needle aspiration (FNA) is a standard procedure for thyroid nodules management and selecting patients for surgical treatment. Atypia of undetermined significance (AUS) or follicular lesion of undetermined significance (FLUS), as stated by The Bethesda System for Reporting Thyroid Cytopathology, is a diagnostic category with an implied malignancy risk of 5-15%. The aim of our study was to review cytology and histopathology reports, as well as clinical and ultrasound data, for thyroid nodules reported as AUS/FLUS, in order to evaluate the malignancy rate and to assess factors associated with malignant outcome...
September 27, 2018: Radiology and Oncology
https://www.readbyqxmd.com/read/30244234/locoregional-disease-control-after-external-beam-radiotherapy-in-91-patients-with-differentiated-thyroid-carcinoma-and-pt4-tumor-stage-a-single-institution-experience
#6
Nikola Besic, Marta Dremelj, Gasper Pilko
Background Locoregional recurrence is common in patients with locally advanced differentiated thyroid carcinoma (DTC). Our aim was to find out the rate of locoregional control of the disease after external beam radiotherapy (EBRT) of the neck and mediastinum in patients with DTC and pT4 tumor. Patients and methods Altogether 91 patients (47 males, 44 females, median age 61 years) with DTC had EBRT of the neck and mediastinum as part of the multimodal treatment of pT4 tumor (63 cases pT4a, 28 cases pT4b) from the year 1973 to 2015...
September 22, 2018: Radiology and Oncology
https://www.readbyqxmd.com/read/30216191/randomised-trial-of-hpv-self-sampling-among-non-attenders-in-the-slovenian-cervical-screening-programme-zora-comparing-three-different-screening-approaches
#7
Urska Ivanus, Tine Jerman, Alenka Repse Fokter, Iztok Takac, Veronika Kloboves Prevodnik, Mateja Marcec, Ursula Salobir Gajsek, Maja Pakiz, Jakob Koren, Simona Hutter Celik, Kristina Gornik Kramberger, Ulrika Klopcic, Rajko Kavalar, Simona Sramek Zatler, Biljana Grcar Kuzmanov, Mojca Florjancic, Natasa Nolde, Srdjan Novakovic, Mario Poljak, Maja Primic Zakelj
Background To overcome obstacles within the Slovenian organised cervical cancer screening programme, a randomised pilot study of human papillomavirus (HPV) self-sampling among non-attenders was performed, aiming to assess three different screening approaches. Participants and methods Non-attenders aged 30-64 years from two Slovenian regions were randomised to two HPV self-sampling groups-the opt-in (I1, n = 14.400) and the opt-out (I2, n = 9.556), with a control group (P, n = 2.600). Self-collected samples were analysed using the Hybrid Capture 2 assay...
September 14, 2018: Radiology and Oncology
https://www.readbyqxmd.com/read/30210049/primary-debulking-surgery-versus-primary-neoadjuvant-chemotherapy-for-high-grade-advanced-stage-ovarian-cancer-comparison-of-survivals
#8
Borut Kobal, Marco Noventa, Branko Cvjeticanin, Matija Barbic, Leon Meglic, Marusa Herzog, Giulia Bordi, Amerigo Vitagliano, Carlo Saccardi, Erik Skof
Background The aim of the study was to analyze the overall survival (OS) and progression free survival (PFS) of patients with high grade and advanced stage epithelial ovarian cancer (EOC) with at least 60 months of follow-up treated in a single gynecologic oncology institute. We compared primary debulking surgery (PDS) versus neoadjuvant chemotherapy plus interval debulking surgery (NACT + IDS) stratifying data based on residual disease with the intent to identify the rationale for therapeutic option decision and the role of laparoscopic evaluation of resectability for that intention...
September 11, 2018: Radiology and Oncology
https://www.readbyqxmd.com/read/30210047/pharmacogenomic-markers-of-glucocorticoid-response-in-the-initial-phase-of-remission-induction-therapy-in-childhood-acute-lymphoblastic-leukemia
#9
Vladimir Gasic, Branka Zukic, Biljana Stankovic, Dragana Janic, Lidija Dokmanovic, Jelena Lazic, Nada Krstovski, Vita Dolzan, Janez Jazbec, Sonja Pavlovic, Nikola Kotur
Background Response to glucocorticoid (GC) monotherapy in the initial phase of remission induction treatment in childhood acute lymphoblastic leukemia (ALL) represents important biomarker of prognosis and outcome. We aimed to study variants in several pharmacogenes (NR3C1, GSTs and ABCB1) that could contribute to improvement of GC response through personalization of GC therapy. Methods Retrospective study enrolling 122 ALL patients was carried out to analyze variants of NR3C1 (rs33389, rs33388 and rs6198), GSTT1 (null genotype), GSTM1 (null genotype), GSTP1 (rs1695 and rs1138272) and ABCB1 (rs1128503, rs2032582 and rs1045642) genes using PCR-based methodology...
September 11, 2018: Radiology and Oncology
https://www.readbyqxmd.com/read/30210043/dynamics-of-ct-visible-pleural-effusion-in-patients-with-pulmonary-infarction
#10
Igor Kocijancic, Jernej Vidmar, Marko Kastelic
Background Pleural effusion remains largely unexplored in patients with pulmonary embolism and concurrent pulmonary infarction. The aim of the study was to investigate the relationship between the size of pulmonary infarction and pleural effusion as well as the time course of pleural effusion in patients with pulmonary infarction. Patients and methods Data from 103 patients with pulmonary infarction was retrospectively analysed along with patient comorbidities, size of pulmonary infarction, presence and size of pleural effusion with the time between the onset of clinical symptoms of pulmonary infarction and CT study...
September 11, 2018: Radiology and Oncology
https://www.readbyqxmd.com/read/30210042/percutaneous-parametrial-dose-escalation-in-women-with-advanced-cervical-cancer-feasibility-and-efficacy-in-relation-to-long-term-quality-of-life
#11
Sati Akbaba, Jan Tobias Oelmann-Avendano, Tilman Bostel, Harald Rief, Nils Henrik Nicolay, Juergen Debus, Katja Lindel, Robert Foerster
Background We analyzed long-term quality of life (QoL) and prognostic factors for QoL as well as clinical outcome in patients with advanced cervical cancer (ACC) treated with primary radiochemotherapy (RChT) consisting of external beam radiotherapy (EBRT) with or without sequential or simultaneous integrated boost (SIB) to the parametria, intracavitary brachytherapy and concomitant chemotherapy (ChT). Patients and methods Eighty-three women were treated with primary RChT between 2008 and 2014. Survival of all patients was calculated and prognostic factors for survival were assessed in univariate and multivariate analysis...
September 11, 2018: Radiology and Oncology
https://www.readbyqxmd.com/read/30210041/three-dimensional-ultrasound-evaluation-of-tongue-posture-and-its-impact-on-articulation-disorders-in-preschool-children-with-anterior-open-bite
#12
Sanda Lah Kravanja, Irena Hocevar-Boltezar, Maja Marolt Music, Ana Jarc, Ivan Verdenik, Maja Ovsenik
Background Tongue posture plays an important role in the etiology of anterior open bite (AOB) and articulation disorders, and is crucial for AOB treatment planning and posttreatment stability. Clinical assessment of tongue posture in children is unreliable due to anatomical limitations. The aim of the study was to present functional diagnostics using three-dimensional ultrasound (3DUS) assessment of resting tongue posture in comparison to clinical assessment, and the associations between the improper tongue posture, otorhinolaryngological characteristics, and articulation disorders in preschool children with AOB...
September 11, 2018: Radiology and Oncology
https://www.readbyqxmd.com/read/30210040/induction-chemotherapy-chemoradiotherapy-and-consolidation-chemotherapy-in-preoperative-treatment-of-rectal-cancer-long-term-results-of-phase-ii-oigit-01-trial
#13
Danijela Golo, Jasna But-Hadzic, Franc Anderluh, Erik Brecelj, Ibrahim Edhemovic, Ana Jeromen, Mirko Omejc, Irena Oblak, Ajra Secerov-Ermenc, Vaneja Velenik
Background The purpose of the study was to improve treatment efficacy for locally advanced rectal cancer (LARC) by shifting half of adjuvant chemotherapy preoperatively to one induction and two consolidation cycles. Patients and methods Between October 2011 and April 2013, 66 patients with LARC were treated with one induction chemotherapy cycle followed by chemoradiotherapy (CRT), two consolidation cycles, surgery and three adjuvant capecitabine cycles. Radiation doses were 50.4 Gy for T2-3 and 54 Gy for T4 tumours in 1...
September 11, 2018: Radiology and Oncology
https://www.readbyqxmd.com/read/30210036/epidemiology-of-oral-mucosal-lesions-in-slovenia
#14
Andrej Aleksander Kansky, Vojko Didanovic, Tadej Dovsak, Bozana Loncar Brzak, Ivica Pelivan, Diana Terlevic
Background Among the diseases of oral mucosa, malignant tumors are the most dangerous, but not the most common lesions that might appear in the oral cavity. Since most of the studies are focused on the detection of cancer in the oral cavity, we were interested in detecting the frequency of benign changes of the oral mucosa in Slovene population. Oral mucosal lesions are important pointer of oral health and quality of life, especially in elderly. The prevalence of oral mucosal lesions, together with information on the risk habits associated with oral health, such as tobacco and alcohol use, can help in planning future oral health studies and screening programs...
September 11, 2018: Radiology and Oncology
https://www.readbyqxmd.com/read/30210035/prevalence-of-papillary-thyroid-cancer-in-subacute-thyroiditis-patients-may-be-higher-than-it-is-presumed-retrospective-analysis-of-137-patients
#15
Nurdan Gül, Ayşe Kubat Üzüm, Özlem Soyluk Selçukbiricik, Gülçin Yegen, Refik Tanakol, Ferihan Aral
Background The association of subacute thyroiditis (SAT) and papillary thyroid carcinoma is a rare finding. In this study, we aimed to investigate the prevalence of differentiated thyroid cancer in a cohort of patients followed with the diagnosis of SAT. Patients and methods We retrospectively screened medical records of Endocrinology and Metabolism outpatient clinic in the past 20 years for patients with SAT. Patients with nodules and suspicious ultrasonography findings who underwent fine needle aspiration biopsy (FNAB) and operated due to malignancy risk were identified...
September 11, 2018: Radiology and Oncology
https://www.readbyqxmd.com/read/30210048/breast-size-impact-on-adjuvant-radiotherapy-adverse-effects-and-dose-parameters-in-treatment-planning
#16
Ivica Ratosa, Aljasa Jenko, Irena Oblak
Background Breast radiotherapy is an established adjuvant treatment after breast conserving surgery. One of the important individual factors affecting the final cosmetic outcome after radiation is breast size. The purpose of this review is to summarise the clinical toxicity profile of adjuvant radiotherapy in women with breasts of various sizes, and to evaluate the treatment planning studies comparing target coverage and dose to thoracic organs at risk in relation to breast size. Conclusions Inhomogeneity and excessive radiation dose (hot spots) in the planning of target volume as well as large volume of the breast per se, all contribute to a higher rate of acute adverse events and suboptimal final cosmetic outcome in adjuvant breast cancer radiotherapy, regardless of the fractionation schedule...
August 2, 2018: Radiology and Oncology
https://www.readbyqxmd.com/read/30018528/an-evaluation-of-the-icon-%C3%A2-mask-fixation-curing-characteristics-of-the-thermoplastic-fixation-and-implications-for-patient-workflow
#17
Samendra Prasad, Matthew Podgorsak, Robert Plunkett, Dheerendra Prasad
Background: Thermoplastic mask immobilization is used to perform hypo-fractionated treatments with the Gamma Knife ICON®. Materials and methods: We evaluated the curing characteristics of the ICON® Nanor mask using force sensing resistors coupled with a data logging tool designed by us. Results: For patients being treated with masks made the same day as the treatment, often in the same sitting with no removal and replacement of the patient from the treatment cradle, based on the curves 80% of the force of fixation is reached at 30 minutes...
June 2018: Radiology and Oncology
https://www.readbyqxmd.com/read/30018527/sclerosing-melanocytic-lesions-sclerosing-melanomas-with-nevoid-features-and-sclerosing-nevi-with-pseudomelanomatous-features-an-analysis-of-90-lesions
#18
Biljana Grcar-Kuzmanov, Emanuela Bostjancic, Juan Antonio Contreras Bandres, Joze Pizem
Background: Sclerosing melanocytic lesions, which are characterized by either focal or diffuse sclerosis in the dermal component and atypical proliferation of predominantly nevoid melanocytes, remain poorly defined. Our aim was to analyze systematically their morphologic spectrum, especially the distinction between sclerosing melanocytic nevus and sclerosing melanoma, which has not been well documented. Patients and methods: We collected 90 sclerosing melanocytic lesions, occurring in 82 patients (49 male, 33 female; age range from 21 to 89 years)...
June 2018: Radiology and Oncology
https://www.readbyqxmd.com/read/30018526/ocular-changes-in-metastatic-melanoma-patients-treated-with-mek-inhibitor-cobimetinib-and-braf-inhibitor-vemurafenib
#19
Ana Ursula Gavric, Janja Ocvirk, Polona Jaki Mekjavic
Background: Mitogen-activated protein kinase kinase (MEK) inhibitor cobimetinib and V-raf murine sarcoma viral oncogene homolog B1 (BRAF) inhibitor vemurafenib have significantly improved the prognosis of BRAF-mutated metastatic melanoma. Some ocular symptoms and signs were recently recognized to follow this treatment. The study was aimed to investigate ocular toxicity in patients with metastatic melanoma treated with cobimetinib in combination with vemurafenib. Patients and methods: In the prospective, observational study, patients with BRAF-mutated metastatic melanoma treated with cobimetinib in combination with vemurafenib at the Institute of Oncology Ljubljana were asked to participate...
June 2018: Radiology and Oncology
https://www.readbyqxmd.com/read/30018525/early-cardiotoxicity-after-adjuvant-concomitant-treatment-with-radiotherapy-and-trastuzumab-in-patients-with-breast-cancer
#20
Tanja Marinko, Simona Borstnar, Rok Blagus, Jure Dolenc, Cvetka Bilban-Jakopin
Background: The purpose of the study was to find out whether there is a difference in the early parameters of cardiotoxicity (left ventricular ejection fraction [LVEF] and N-terminal pro-B-type natriuretic peptide [NT-proBNP]) between the two groups of patients: the patients treated for left breast cancer (left breast cancer group) and those treated for the right breast cancer (right breast cancer group), after the treatment had been completed. Patients and methods: The study included 175 consecutive patients with human epidermal growth factor receptor-2 (HER2) positive early breast cancer, treated concurrently with trastuzumab and radiotherapy (RT), between June 2005 and December 2010...
June 2018: Radiology and Oncology
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