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Acta Oncologica

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https://www.readbyqxmd.com/read/29057724/incidence-and-survival-of-oropharyngeal-cancer-in-denmark-a-nation-wide-population-based-study-from-1980-to-2014
#1
Jakob Schmidt Jensen, David Hebbelstrup Jensen, Christian Grønhøj, Kirstine Kim Schmidt Karnov, Cecilie Nørregaard, Tina Klitmøller Agander, Lena Specht, Christian von Buchwald
BACKGROUND: Oropharyngeal carcinomas (OPCs) constitute a significant and increasing proportion of head and neck carcinomas and are an important global cause of morbidity and mortality. The purpose of this study was to determine trends in incidence and survival in OPC in the Danish population from 1980 to 2014. METHODS: This study included all patients registered in the nationwide Danish Cancer Registry over the period 1980-2014. The age-adjusted incidence rates (AAIR) per 100,000, annual percentage change (APC) and average annual percent change (AAPC) were evaluated...
October 23, 2017: Acta Oncologica
https://www.readbyqxmd.com/read/29057703/the-risk-of-second-primary-malignancy-in-patients-with-stage-ia-non-small-cell-lung-cancer-a-u-s-population-based-study
#2
Amit Khanal, Bilal Haider Lashari, Sreechandralekha Kruthiventi, Lubina Arjyal, Amir Bista, Priya Rimal, Dipesh Uprety
BACKGROUND: Lung cancer is one of the most common cancers worldwide. Patients with early stage lung cancer have improved long-term survival. With the introduction of low-dose CT scan, more patients are going to be diagnosed at an early stage. However, there is limited data on the risk of second primary malignancies (SPMs) in these subsets of patients in the United States. METHODS: We utilized SEER-13 (Surveillance, Epidemiology and End Results) registry to obtain Multiple Primary- Standardized Incidence Ratio and an Absolute Excess Risk between January 2004 and December 2010 for patients with Stage Ia non-small cell lung cancer...
October 23, 2017: Acta Oncologica
https://www.readbyqxmd.com/read/29037095/biological-dose-and-complication-probabilities-for-the-rectum-and-bladder-based-on-linear-energy-transfer-distributions-in-spot-scanning-proton-therapy-of-prostate-cancer
#3
Jesper Pedersen, Jørgen B B Petersen, Camilla H Stokkevåg, Kristian S Ytre-Hauge, Stella Flampouri, Zuofeng Li, Nancy Mendenhall, Ludvig P Muren
BACKGROUND: The increased linear energy transfer (LET) at the end of the Bragg peak causes concern for an elevated and spatially varying relative biological effectiveness (RBE) of proton therapy (PT), often in or close to dose-limiting normal tissues. In this study, we investigated dose-averaged LET (LETd) distributions for spot scanning PT of prostate cancer patients using different beam angle configurations. In addition, we derived RBE-weighted (RBEw) dose distributions and related normal tissue complication probabilities (NTCPs) for the rectum and bladder...
October 17, 2017: Acta Oncologica
https://www.readbyqxmd.com/read/29034790/minimal-toxicity-after-proton-beam-therapy-for-prostate-and-pelvic-nodal-irradiation-results-from-the-proton-collaborative-group-reg001-09-trial
#4
Michael D Chuong, William Hartsell, Gary Larson, Henry Tsai, George E Laramore, Carl J Rossi, J Ben Wilkinson, Adeel Kaiser, Carlos Vargas
BACKGROUND: Proton beam therapy (PBT) reduces normal organ dose compared to intensity modulated radiation therapy (IMXT) for prostate cancer patients who receive pelvic radiation therapy. It is not known whether this dosimetric advantage results in less gastrointestinal (GI) and genitourinary (GU) toxicity than would be expected from IMXT. MATERIAL AND METHODS: We evaluated treatment parameters and toxicity outcomes for non-metastatic prostate cancer patients who received pelvic radiation therapy and enrolled on the PCG REG001-09 trial...
October 14, 2017: Acta Oncologica
https://www.readbyqxmd.com/read/29034756/a-prediction-model-for-early-death-in-non-small-cell-lung-cancer-patients-following-curative-intent-chemoradiotherapy
#5
Arthur Jochems, Issam El-Naqa, Marc Kessler, Charles S Mayo, Shruti Jolly, Martha Matuszak, Corinne Faivre-Finn, Gareth Price, Lois Holloway, Shalini Vinod, Matthew Field, Mohamed Samir Barakat, David Thwaites, Dirk de Ruysscher, Andre Dekker, Philippe Lambin
BACKGROUND: Early death after a treatment can be seen as a therapeutic failure. Accurate prediction of patients at risk for early mortality is crucial to avoid unnecessary harm and reducing costs. The goal of our work is two-fold: first, to evaluate the performance of a previously published model for early death in our cohorts. Second, to develop a prognostic model for early death prediction following radiotherapy. MATERIAL AND METHODS: Patients with NSCLC treated with chemoradiotherapy or radiotherapy alone were included in this study...
October 14, 2017: Acta Oncologica
https://www.readbyqxmd.com/read/28984492/prognostic-factors-affecting-survival-after-whole-brain-radiotherapy-in-patients-with-brain-metastasized-lung-cancer
#6
Georgios Tsakonas, Fatou Hellman, Michael Gubanski, Signe Friesland, Salomon Tendler, Rolf Lewensohn, Simon Ekman, Luigi de Petris
BACKGROUND: Whole-brain radiotherapy (WBRT) has been the standard of care for multiple NSCLC brain metastases but due to its toxicity and lack of survival benefit, its use in the palliative setting is being questioned. PATIENT AND METHODS: This was a single institution cohort study including brain metastasized lung cancer patients who received WBRT at Karolinska University Hospital. Information about Recursive Partitioning Analysis (RPA) and Graded Prognostic Assessment (GPA) scores, demographics, histopathological results and received oncological therapy were collected...
October 6, 2017: Acta Oncologica
https://www.readbyqxmd.com/read/28984165/target-definition-in-salvage-postoperative-radiotherapy-for-prostate-cancer-18f-fluorocholine-pet-ct-assessment-of-local-recurrence
#7
Osman El Kabbaj, Philippe Robin, David Bourhis, Gurvan Dissaux, Nicola Rosenfelder, Antoine Valeri, Georges Fournier, Pierre-Yves Salaun, Olivier Pradier, Jean-Pierre Malhaire, Ronan Abgral, Ulrike Schick
PURPOSE: Inadequate clinical target volume (CTV) definition is likely to be a major contributing factor to local recurrence (LR) rate after radiotherapy. Our aims were to identify sites of prostate cancer LR in biochemical recurrence post-prostatectomy using (18)F-Fluorocholine (18F-FCH) positron emission tomography/computed tomography (PET/CT) and to compare different CTV-delineation guidelines in a cohort of postoperative patients. MATERIAL AND METHODS: Thirty-six patients presenting with LR within the prostatic bed on 18F-FCH PET/CT between 10/2011 and 06/2016 were included in this retrospective study...
October 6, 2017: Acta Oncologica
https://www.readbyqxmd.com/read/28980848/tumor-stroma-ratio-predicts-recurrence-in-patients-with-colon-cancer-treated-with-neoadjuvant-chemotherapy
#8
Torben Frøstrup Hansen, Sanne Kjær-Frifeldt, Jan Lindebjerg, Søren Rafael Rafaelsen, Lars Henrik Jensen, Anders Jakobsen, Flemming Brandt Sørensen
BACKGROUND: Neoadjuvant chemotherapy represents a new treatment approach to locally advanced colon cancer. The aim of this study was to analyze the ability of tumor-stroma ratio (TSR) to predict disease recurrence in patients with locally advanced colon cancer treated with neoadjuvant chemotherapy. MATERIAL AND METHODS: This study included 65 patients with colon cancer treated with neoadjuvant chemotherapy in a phase II trial. All patients were planned for three cycles of capecitabine and oxaliplatin before surgery...
October 5, 2017: Acta Oncologica
https://www.readbyqxmd.com/read/28971717/perceptions-of-support-among-swedish-parents-of-children-after-end-of-successful-cancer-treatment-a-prospective-longitudinal-study
#9
Laura Kukkola, Emma Hovén, Martin Cernvall, Louise von Essen, Helena Grönqvist
INTRODUCTION: Most children survive childhood cancer, however parenting a child diagnosed with cancer is a major challenge. The main aim of the current study was to describe Swedish parents' need, opportunity and benefit of support from healthcare professionals and significant others after end of a child's successful cancer treatment. MATERIAL AND METHODS: Data was collected from approximately one week after end of successful treatment/six months after transplantation (T4, n = 212) up to five years thereafter (T7, n = 137)...
October 3, 2017: Acta Oncologica
https://www.readbyqxmd.com/read/28931343/impact-of-bowel-gas-and-body-outline-variations-on-total-accumulated-dose-with-intensity-modulated-proton-therapy-in-locally-advanced-cervical-cancer-patients
#10
Thomas Berger, Jørgen Breede Baltzer Petersen, Jacob Christian Lindegaard, Lars Ulrik Fokdal, Kari Tanderup
INTRODUCTION: Density changes occurring during fractionated radiotherapy in the pelvic region may degrade proton dose distributions. The aim of the study was to quantify the dosimetric impact of gas cavities and body outline variations. MATERIAL AND METHODS: Seven patients with locally advanced cervical cancer (LACC) were analyzed through a total of 175 daily cone beam computed tomography (CBCT) scans. Four-beams intensity-modulated proton therapy (IMPT) dose plans were generated targeting the internal target volume (ITV) composed of: primary tumor, elective and pathological nodes...
September 21, 2017: Acta Oncologica
https://www.readbyqxmd.com/read/28927335/distortion-correction-of-diffusion-weighted-magnetic-resonance-imaging-of-the-head-and-neck-in-radiotherapy-position
#11
René M Winter, Holger Schmidt, Sara Leibfarth, Kerstin Zwirner, Stefan Welz, Nina F Schwenzer, Christian la Fougère, Konstantin Nikolaou, Sergios Gatidis, Daniel Zips, Daniela Thorwarth
No abstract text is available yet for this article.
September 20, 2017: Acta Oncologica
https://www.readbyqxmd.com/read/28920509/diagnosis-of-hyponatremia-and-increased-risk-of-a-subsequent-cancer-diagnosis-results-from-a-nationwide-population-based-cohort-study
#12
Louise Holland-Bill, Christian Fynbo Christiansen, Dóra Körmendiné Farkas, Frede Donskov, Jens Otto L Jørgensen, Henrik Toft Sørensen
BACKGROUND: Hyponatremia has recently been associated with subsequent cancer risk. This population-based nationwide study assessed whether the diagnosis of hyponatremia can predict a cancer diagnosis within most common cancers. MATERIAL AND METHODS: Using Danish medical registries, we identified 16,220 patients with a first-time diagnosis of hyponatremia, without a cancer diagnosis, from January 2006 through November 2013. We quantified the relative risk of a subsequent cancer diagnosis by standardized incidence ratios (SIRs), comparing observed cancer incidence among patients diagnosed with hyponatremia to that expected, based on national cancer incidence during that period...
September 18, 2017: Acta Oncologica
https://www.readbyqxmd.com/read/28920501/kidney-dosimetry-during-177-lu-dotatate-therapy-in-patients-with-neuroendocrine-tumors-aspects-on-calculation-and-tolerance
#13
Mattias Sandström, Ulrike Garske-Román, Silvia Johansson, Dan Granberg, Anders Sundin, Nanette Freedman
BACKGROUND: Fractionated therapy with (177)Lu-DOTATATE has been reported to be an effective treatment for patients with metastasized neuroendocrine tumors. To optimize the treatment, absorbed doses to risk organs are calculated for the individual patient. For each organ, absorbed dose due to activity in the organ itself (self-dose) and that originating from other organs (cross-dose) are calculated from serial measurements to obtain the activity distribution following treatment. The main aim of the present work were to calculate the cross-dose contribution to the total absorbed kidney dose...
September 18, 2017: Acta Oncologica
https://www.readbyqxmd.com/read/28920500/acute-toxicity-of-the-bowel-after-stereotactic-robotic-radiotherapy-for-abdominopelvic-oligometastases
#14
Michael Frelinghuysen, Wilco Schillemans, Lieke Hol, Cornelis Verhoef, Mischa Hoogeman, Joost Jan Nuyttens
AIM: To correlate dose-volume histogram (DVH) parameters with appearance of grade ≥2 acute and late gastrointestinal toxicity of stereotactic body radiotherapy (SBRT) in patients with abdominopelvic solitary or oligometastatic disease outside the liver. MATERIAL AND METHODS: Acute and late bowel toxicity of 84 abdominopelvic oligometastatic patients was registered. A logistic regression was performed between different DVH parameters and presence of grade ≥2 acute and late toxicity...
September 18, 2017: Acta Oncologica
https://www.readbyqxmd.com/read/28918686/sensitivity-of-post-treatment-positron-emission-tomography-computed-tomography-to-detect-inter-fractional-range-variations-in-scanned-ion-beam-therapy
#15
Josefine Handrack, Thomas Tessonnier, Wenjing Chen, Jakob Liebl, Jürgen Debus, Julia Bauer, Katia Parodi
BACKGROUND: Ion therapy, especially with modern scanning beam delivery, offers very sharp dose gradients for highly conformal cancer treatment. However, it is very sensitive to uncertainties of tissue stopping properties as well as to anatomical changes and setup errors, making range verification highly desirable. To this end, positron emission tomography (PET) can be used to measure decay products of β(+)-emitters created in interactions inside the patient. This work investigates the sensitivity of post treatment PET/CT (computed tomography) to detect inter-fractional range variations...
September 18, 2017: Acta Oncologica
https://www.readbyqxmd.com/read/28918679/relating-the-proton-relative-biological-effectiveness-to-tumor-control-and-normal-tissue-complication-probabilities-assuming-interpatient-variability-in-%C3%AE-%C3%AE
#16
Harald Paganetti
BACKGROUND: Proton therapy uses a constant relative biological effectiveness (RBE) of 1.1. The use of variable RBE values has been suggested but is currently not feasible due to uncertainties. The impact of variable RBE has solely been studied using dosimetric indices. This work elucidates the impact of RBE variations on tumor control and normal tissue complication probabilities (TCP/NTCP). METHODS: Models to estimate TCP and NTCP were used in combination with an empirical proton RBE model...
September 18, 2017: Acta Oncologica
https://www.readbyqxmd.com/read/28903664/preferences-and-actual-chemotherapy-decision-making-in-the-greater-plains-collaborative-breast-cancer-study
#17
Ann M Berger, Russell J Buzalko, Kevin A Kupzyk, Bret J Gardner, Dilorom M Djalilova, Julie L Otte
INTRODUCTION: There is renewed interest in identifying breast cancer patients' participation in decision-making about adjuvant chemotherapy. There is a gap in the literature regarding the impact of these decisions on quality of life (QOL) and quality of care (QOC). Our aims were to determine similarities and differences in how patients diagnosed with breast cancer preferred to make decisions with providers about cancer treatment, to examine the patient's recall of her role when the decision was made about chemotherapy and to determine how preferred and actual roles, as well as congruence between them, relate to QOL and perceived QOC...
September 13, 2017: Acta Oncologica
https://www.readbyqxmd.com/read/28903619/the-volume-of-pet-defined-active-bone-marrow-spared-predicts-acute-hematologic-toxicities-in-anal-cancer-patients-receiving-concurrent-chemoradiotherapy
#18
Christopher Freese, Mickaela Sudhoff, Luke Lewis, Michael Lamba, Jordan Kharofa
No abstract text is available yet for this article.
September 13, 2017: Acta Oncologica
https://www.readbyqxmd.com/read/28893125/diffusion-tensor-magnetic-resonance-imaging-driven-growth-modeling-for-radiotherapy-target-definition-in-glioblastoma
#19
Morten B Jensen, Trine L Guldberg, Anja Harbøll, Slávka Lukacova, Jesper F Kallehauge
BACKGROUND: The clinical target volume (CTV) in radiotherapy is routinely based on gadolinium contrast enhanced T1 weighted (T1w + Gd) and T2 weighted fluid attenuated inversion recovery (T2w FLAIR) magnetic resonance imaging (MRI) sequences which have been shown to over- or underestimate the microscopic tumor cell spread. Gliomas favor spread along the white matter fiber tracts. Tumor growth models incorporating the MRI diffusion tensors (DTI) allow to account more consistently for the glioma growth...
September 12, 2017: Acta Oncologica
https://www.readbyqxmd.com/read/28893119/screening-for-psychological-distress-before-radiotherapy-for-painful-bone-metastases-may-be-useful-to-identify-patients-with-high-levels-of-distress
#20
Paulien G Westhoff, Alexander de Graeff, Evelyn M Monninkhof, Maaike J Berveling, Marco van Vulpen, Jan Willem H Leer, Corrie A M Marijnen, Anna K L Reyners, Yvette M van der Linden
BACKGROUND: Psychological distress (PD) has a major impact on quality of life. We studied the incidence of PD before and after radiotherapy for painful bone metastases. Furthermore, we aimed to identify factors predictive for PD. METHODS: Between 1996 and 1998, the Dutch Bone Metastasis Study included 1157 patients with painful bone metastases. Patients were randomized between two fractionation schedules. The study showed a pain response of 74% in both groups. Patients filled out weekly questionnaires for 13 weeks, then monthly for two years...
September 12, 2017: Acta Oncologica
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