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https://www.readbyqxmd.com/read/28330704/an-update-on-non-extremity-soft-tissue-sarcomas
#1
S J Ford, L M Almond, A Gronchi
The management of soft tissue sarcoma is challenging and varied. Centralisation of management in high volume specialist centres has revolutionised outcomes. Surgery remains the mainstay of treatment and is currently the only potentially curative therapy. Retroperitoneal soft tissue sarcoma presents a particular challenge to the surgical oncologist and the concept of extended resection to include surrounding expendable organs taken en bloc with the tumour has now largely been adopted. The use of neoadjuvant and adjuvant therapies for retroperitoneal soft tissue sarcoma is still to be established, although they are employed on a case-specific basis...
March 19, 2017: Clinical Oncology: a Journal of the Royal College of Radiologists
https://www.readbyqxmd.com/read/28303898/circulating-tumour-dna-reflects-treatment-response-and-clonal-evolution-in-chronic-lymphocytic-leukaemia
#2
Paul Yeh, Tane Hunter, Devbarna Sinha, Sarah Ftouni, Elise Wallach, Damian Jiang, Yih-Chih Chan, Stephen Q Wong, Maria Joao Silva, Ravikiran Vedururu, Kenneth Doig, Enid Lam, Gisela Mir Arnau, Timothy Semple, Meaghan Wall, Andjelija Zivanovic, Rishu Agarwal, Pasquale Petrone, Kate Jones, David Westerman, Piers Blombery, John F Seymour, Anthony T Papenfuss, Mark A Dawson, Constantine S Tam, Sarah-Jane Dawson
Several novel therapeutics are poised to change the natural history of chronic lymphocytic leukaemia (CLL) and the increasing use of these therapies has highlighted limitations of traditional disease monitoring methods. Here we demonstrate that circulating tumour DNA (ctDNA) is readily detectable in patients with CLL. Importantly, ctDNA does not simply mirror the genomic information contained within circulating malignant lymphocytes but instead parallels changes across different disease compartments following treatment with novel therapies...
March 17, 2017: Nature Communications
https://www.readbyqxmd.com/read/28301871/a-unified-model-of-the-hierarchical-and-stochastic-theories-of-gastric-cancer
#3
REVIEW
Yanjing Song, Yao Wang, Chuan Tong, Hongqing Xi, Xudong Zhao, Yi Wang, Lin Chen
Gastric cancer (GC) is a life-threatening disease worldwide. Despite remarkable advances in treatments for GC, it is still fatal to many patients due to cancer progression, recurrence and metastasis. Regarding the development of novel therapeutic techniques, many studies have focused on the biological mechanisms that initiate tumours and cause treatment resistance. Tumours have traditionally been considered to result from somatic mutations, either via clonal evolution or through a stochastic model. However, emerging evidence has characterised tumours using a hierarchical organisational structure, with cancer stem cells (CSCs) at the apex...
March 16, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/28294139/imaging-to-study-solid-tumour-origin-and-progression-lessons-from-research-and-clinical-oncology
#4
REVIEW
Stefania Raimondo, Giovanni Zito
Biomedical imaging in recent decades has clarified our understanding of normal and pathological cellular processes in vivo. In particular, this approach recently provided insights into processes occurring at a molecular or genetic level rather than at the anatomical level. The evolution of this discipline by engineering have led to its integration into biomedical research to (1) increase sensitivity and resolution imaging and to (2) improve tissue and cell specificity. Currently, imaging approaches are used in three different biomedical areas: (a) identification of cellular processes in physiological and disease state, (b) in vivo single cell imaging, and (c) identification of new prognostic and therapeutical strategies...
March 15, 2017: Immunology and Cell Biology
https://www.readbyqxmd.com/read/28279477/the-evolution-of-differentiated-thyroid-cancer
#5
Sylvia L Asa
Differentiated thyroid tumours of follicular cell derivation have traditionally been classified based on architecture, cytology, or both. The features that distinguish the various entities are controversial and diagnostic criteria are inconsistent and often irreproducible. The complexity of classification schemes has not been substantiated by molecular profiling. In this review, a simplistic approach to the diagnosis of well differentiated thyroid neoplasia is provided to challenge the dogma. The proposed classification matches the molecular profiles of these lesions and simplifies the criteria for diagnosis...
March 6, 2017: Pathology
https://www.readbyqxmd.com/read/28269607/a-dce-mri-imaging-based-model-for-simulation-of-vascular-tumour-growth
#6
Thais Roque, Veerle Kersemans, Sean Smart, Danny Allen, Julia A Schnabel, Michael Chappell
Imaging-based modelling of tumour growth can serve as a powerful tool to understand and predict tumour evolution and its response to therapy. The purpose of this study was to introduce, calibrate and evaluate a multi-scale model of vascular tumour growth. The model allows for proliferation, death and spatial spread of tumour cells as well as for new vessel creation. Both the calibration and the evaluation of the tumour growth model were performed using pre-clinical longitudinal time series of dynamic contrast-enhanced magnetic resonance imaging of colon carcinoma...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28269243/predictive-models-for-diffuse-low-grade-glioma-patients-under-chemotherapy
#7
Meriem Ben Abdallah, Marie Blonski, Sophie Wantz-Mezieres, Yann Gaudeau, Luc Taillandier, Jean-Marie Moureaux
Diffuse low-grade gliomas are rare primitive cerebral tumours of adults. These tumors progress continuously over time and then turn to a higher grade of malignancy associated with neurological disability, leading ultimately to death. Tumour size is one of the most important prognostic factors. Thus, it is of great importance to be able to assess the volume of the tumor during the patients' monitoring. MRI is nowadays the recommended modality to achieve this. Furthermore, if surgery remains the first option for diffuse low-grade gliomas, chemotherapy is increasingly used (before or after a possible surgery)...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28230714/assessment-of-skeletal-tumour-burden-on-18f-naf-pet-ct-using-a-new-quantitative-method
#8
Paula Lapa, Margarida Marques, Gracinda Costa, Andrei Iagaru, João Pedroso de Lima
PURPOSE: The purpose of this study was to test a method of quantifying skeletal tumour burden with F-NaF PET/CT. PATIENTS AND METHODS: We retrospectively reviewed the charts of 117 patients who underwent F-NaF PET/CT for the detection of bone metastases, 68 women and 49 men, 16-82 years old (mean±SD: 62.9±10.7 years). Mean standardized uptake values (SUVmean) were measured in five anatomic sites to evaluate normal skeleton activity. The influence of sex and age was investigated...
April 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/28228644/tumour-evolution-epigenetic-and-genetic-heterogeneity-in-metastasis
#9
Gemma K Alderton
No abstract text is available yet for this article.
February 23, 2017: Nature Reviews. Cancer
https://www.readbyqxmd.com/read/28227865/a-dce-mri-imaging-based-model-for-simulation-of-vascular-tumour-growth
#10
Thais Roque, Veerle Kersemans, Sean Smart, Danny Allen, Julia A Schnabel, Michael Chappell, Thais Roque, Veerle Kersemans, Sean Smart, Danny Allen, Julia A Schnabel, Michael Chappell, Sean Smart, Michael Chappell, Veerle Kersemans, Danny Allen, Julia A Schnabel, Thais Roque
Imaging-based modelling of tumour growth can serve as a powerful tool to understand and predict tumour evolution and its response to therapy. The purpose of this study was to introduce, calibrate and evaluate a multi-scale model of vascular tumour growth. The model allows for proliferation, death and spatial spread of tumour cells as well as for new vessel creation. Both the calibration and the evaluation of the tumour growth model were performed using pre-clinical longitudinal time series of dynamic contrast-enhanced magnetic resonance imaging of colon carcinoma...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227477/predictive-models-for-diffuse-low-grade-glioma-patients-under-chemotherapy
#11
Meriem Ben Abdallah, Marie Blonski, Sophie Wantz-Mezieres, Yann Gaudeau, Luc Taillandier, Jean-Marie Moureaux, Meriem Ben Abdallah, Marie Blonski, Sophie Wantz-Mezieres, Yann Gaudeau, Luc Taillandier, Jean-Marie Moureaux, Luc Taillandier, Jean-Marie Moureaux, Marie Blonski, Yann Gaudeau, Sophie Wantz-Mezieres, Meriem Ben Abdallah
Diffuse low-grade gliomas are rare primitive cerebral tumours of adults. These tumors progress continuously over time and then turn to a higher grade of malignancy associated with neurological disability, leading ultimately to death. Tumour size is one of the most important prognostic factors. Thus, it is of great importance to be able to assess the volume of the tumor during the patients' monitoring. MRI is nowadays the recommended modality to achieve this. Furthermore, if surgery remains the first option for diffuse low-grade gliomas, chemotherapy is increasingly used (before or after a possible surgery)...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28214527/a%C3%A2-mathematical-model-of-low-grade-gliomas-treated-with-temozolomide-and-its-therapeutical-implications
#12
M U Bogdańska, M Bodnar, J Belmonte-Beitia, M Murek, P Schucht, J Beck, V M Pérez-García
Low grade gliomas (LGGs) are infiltrative and incurable primary brain tumours with typically slow evolution. These tumours usually occur in young and otherwise healthy patients, bringing controversies in treatment planning since aggressive treatment may lead to undesirable side effects. Thus, for management decisions it would be valuable to obtain early estimates of LGG growth potential. Here we propose a simple mathematical model of LGG growth and its response to chemotherapy which allows the growth of LGGs to be described in real patients...
February 16, 2017: Mathematical Biosciences
https://www.readbyqxmd.com/read/28203620/schwannoma-of-the-tongue-a-common-tumour-in-a-rare-location-a-case-report
#13
Ines Abreu, Diogo Roriz, Pedro Rodrigues, Ângela Moreira, Cristina Marques, Filipe Caseiro Alves
Schwannoma is a benign tumour that arises from Schwann cells of the peripheral nerve sheath, and is a common tumour of the head and neck. However, intraoral location is very uncommon (only 1% of all head and neck schwannomas). We report a rare case of lingual schwannoma in a 20-year-old male patient who presented with a small, slow-growing mass over the right lateral border of the tongue with 1 year of evolution and that became recently ulcerated. The patient underwent MRI examination and complete surgical excision...
2017: European Journal of Radiology Open
https://www.readbyqxmd.com/read/28202655/constraints-in-cancer-evolution
#14
REVIEW
Subramanian Venkatesan, Nicolai J Birkbak, Charles Swanton
Next-generation deep genome sequencing has only recently allowed us to quantitatively dissect the extent of heterogeneity within a tumour, resolving patterns of cancer evolution. Intratumour heterogeneity and natural selection contribute to resistance to anticancer therapies in the advanced setting. Recent evidence has also revealed that cancer evolution might be constrained. In this review, we discuss the origins of intratumour heterogeneity and subsequently focus on constraints imposed upon cancer evolution...
February 8, 2017: Biochemical Society Transactions
https://www.readbyqxmd.com/read/28193548/advances-in-understanding-tumour-evolution-through-single-cell%C3%A2-sequencing
#15
Jack Kuipers, Katharina Jahn, Niko Beerenwinkel
The mutational heterogeneity observed within tumours poses additional challenges to the development of effective cancer treatments. A thorough understanding of a tumour's subclonal composition and its mutational history is essential to open up the design of treatments tailored to individual patients. Comparative studies on a large number of tumours permit the identification of mutational patterns which may refine forecasts of cancer progression, response to treatment and metastatic potential. The composition of tumours is shaped by evolutionary processes...
February 11, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28190876/the-evolution-of-tumour-phylogenetics-principles-and-practice
#16
REVIEW
Russell Schwartz, Alejandro A Schäffer
Rapid advances in high-throughput sequencing and a growing realization of the importance of evolutionary theory to cancer genomics have led to a proliferation of phylogenetic studies of tumour progression. These studies have yielded not only new insights but also a plethora of experimental approaches, sometimes reaching conflicting or poorly supported conclusions. Here, we consider this body of work in light of the key computational principles underpinning phylogenetic inference, with the goal of providing practical guidance on the design and analysis of scientifically rigorous tumour phylogeny studies...
April 2017: Nature Reviews. Genetics
https://www.readbyqxmd.com/read/28183795/med12-is-recurrently-mutated-in-middle-eastern-colorectal-cancer
#17
Abdul K Siraj, Tariq Masoodi, Rong Bu, Poyil Pratheeshkumar, Nasser Al-Sanea, Luai H Ashari, Alaa Abduljabbar, Samar Alhomoud, Fouad Al-Dayel, Fowzan S Alkuraya, Khawla S Al-Kuraya
OBJECTIVE: Colorectal cancer (CRC) is a common cancer and a leading cause of cancer deaths. Previous studies have identified a number of key steps in the evolution of CRC but our knowledge of driver mutations in CRC remains incomplete. Recognising the potential of studying different human populations to reveal novel insights in disease pathogenesis, we conducted genomic analysis of CRC in Saudi patients. DESIGN: In the discovery phase of the study, we conducted whole genome sequencing of tumour and corresponding germline DNA in 27 patients with CRC...
February 9, 2017: Gut
https://www.readbyqxmd.com/read/28178237/extrachromosomal-oncogene-amplification-drives-tumour-evolution-and-genetic-heterogeneity
#18
Kristen M Turner, Viraj Deshpande, Doruk Beyter, Tomoyuki Koga, Jessica Rusert, Catherine Lee, Bin Li, Karen Arden, Bing Ren, David A Nathanson, Harley I Kornblum, Michael D Taylor, Sharmeela Kaushal, Webster K Cavenee, Robert Wechsler-Reya, Frank B Furnari, Scott R Vandenberg, P Nagesh Rao, Geoffrey M Wahl, Vineet Bafna, Paul S Mischel
Human cells have twenty-three pairs of chromosomes. In cancer, however, genes can be amplified in chromosomes or in circular extrachromosomal DNA (ecDNA), although the frequency and functional importance of ecDNA are not understood. We performed whole-genome sequencing, structural modelling and cytogenetic analyses of 17 different cancer types, including analysis of the structure and function of chromosomes during metaphase of 2,572 dividing cells, and developed a software package called ECdetect to conduct unbiased, integrated ecDNA detection and analysis...
March 2, 2017: Nature
https://www.readbyqxmd.com/read/28140371/computational-protein-design-a-review
#19
Ivan Coluzza
Proteins are one of the most versatile modular assembling systems in nature. Experimentally, more than 110 000 protein structures have been identified and more are deposited every day in the Protein Data Bank. Such an enormous structural variety is to a first approximation controlled by the sequence of amino acids along the peptide chain of each protein. Understanding how the structural and functional properties of the target can be encoded in this sequence is the main objective of protein design. Unfortunately, rational protein design remains one of the major challenges across the disciplines of biology, physics and chemistry...
January 31, 2017: Journal of Physics. Condensed Matter: An Institute of Physics Journal
https://www.readbyqxmd.com/read/28140359/a-radiobiological-model-of-radiotherapy-response-and-its-correlation-with-prognostic-imaging-variables
#20
Mireia Crispin-Ortuzar, Jeho Jeong, Andrew N Fontanella, Joseph O Deasy
Radiobiological models of tumour control probability (TCP) can be personalized using imaging data. We propose an extension to a voxel-level radiobiological TCP model in order to describe patient-specific differences and intra-tumour heterogeneity. In the proposed model, tumour shrinkage is described by means of a novel kinetic Monte Carlo method for inter-voxel cell migration and tumour deformation. The model captures the spatiotemporal evolution of the tumour at the voxel level, and is designed to take imaging data as input...
April 7, 2017: Physics in Medicine and Biology
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