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https://www.readbyqxmd.com/read/29040911/a-deep-learning-model-integrating-fcnns-and-crfs-for-brain-tumor-segmentation
#1
Xiaomei Zhao, Yihong Wu, Guidong Song, Zhenye Li, Yazhuo Zhang, Yong Fan
Accurate and reliable brain tumor segmentation is a critical component in cancer diagnosis, treatment planning, and treatment outcome evaluation. Build upon successful deep learning techniques, a novel brain tumor segmentation method is developed by integrating fully convolutional neural networks (FCNNs) and Conditional Random Fields (CRFs) in a unified framework to obtain segmentation results with appearance and spatial consistency. We train a deep learning based segmentation model using 2D image patches and image slices in following steps: 1) training FCNNs using image patches; 2) training CRFs as Recurrent Neural Networks (CRF-RNN) using image slices with parameters of FCNNs fixed; and 3) fine-tuning the FCNNs and the CRF-RNN using image slices...
October 5, 2017: Medical Image Analysis
https://www.readbyqxmd.com/read/29040322/dexamethasone-mediated-inhibition-of-glioblastoma-neurosphere-dispersal-in-an-ex-vivo-organotypic-neural-assay
#2
Ahmed M Meleis, Aria Mahtabfar, Shabbar Danish, Ramsey A Foty
Glioblastoma is highly aggressive. Early dispersal of the primary tumor renders localized therapy ineffective. Recurrence always occurs and leads to patient death. Prior studies have shown that dispersal of Glioblastoma can be significantly reduced by Dexamethasone (Dex), a drug currently used to control brain tumor related edema. However, due to high doses and significant side effects, treatment is tapered and discontinued as soon as edema has resolved. Prior analyses of the dispersal inhibitory effects of Dex were performed on tissue culture plastic, or polystyrene filters seeded with normal human astrocytes, conditions which inherently differ from the parenchymal architecture of neuronal tissue...
2017: PloS One
https://www.readbyqxmd.com/read/29039591/dabrafenib-in-patients-with-recurrent-braf-v600e-mutated-malignant-glioma-and-leptomeningeal-disease
#3
Michael C Burger, Michael W Ronellenfitsch, Nadja I Lorenz, Marlies Wagner, Martin Voss, David Capper, Theophilos Tzaridis, Ulrich Herrlinger, Joachim P Steinbach, Gabriele Stoffels, Karl-Josef Langen, Christian Brandts, Christian Senft, Patrick N Harter, Oliver Bähr
BRAF V600E mutations occur frequently in malignant melanoma, but are rare in most malignant glioma subtypes. Besides, more benign brain tumors such as ganglioglioma, dysembryoblastic neuroepithelial tumours and supratentorial pilocytic astrocytomas, only pleomorphic xanthoastrocytomas (50-78%) and epitheloid glioblastoma (50%) regularly exhibit BRAF mutations. In the present study, we report on three patients with recurrent malignant gliomas harbouring a BRAF V600E mutation. All patients presented with markedly disseminated leptomeningeal disease at recurrence and had progressed after radiotherapy and alkylating chemotherapy...
October 2, 2017: Oncology Reports
https://www.readbyqxmd.com/read/29028811/elevated-expression-of-hsp10-protein-inhibits-apoptosis-and-associates-with-poor-prognosis-of-astrocytoma
#4
Weibing Fan, Shuang-Shi Fan, Juan Feng, Desheng Xiao, Songqing Fan, Jiadi Luo
Astrocytoma is the most common type of primary malignant brain tumor, with pretty lowly 5-year survival rate in patients. Although extended surgical removal of the tumor and postoperative chemotherapy/radiotherapy executed, still there is large recurrence rate, mainly because diffuse glioma tumor cells ubiquitously infiltrate into normal parenchyma. So it becomes a priority to hunt novel molecular and signaling pathway targets to suppress astrocyma progression. HSP10, an important member of Heat shock proteins (Hsps) family, classically works as molecular chaperone folding or degradating of target proteins...
2017: PloS One
https://www.readbyqxmd.com/read/29028584/diagnosis-and-treatment-options-for-sequelae-following-radiation-treatment-of-brain-tumors
#5
REVIEW
Swapnil Mehta, Aatman Shah, Henry Jung
Radiation serves an important role in the treatment of metastatic and primary brain tumors. Radiation carries a risk of post radiation treatment effects, such as pseudoprogression and radiation necrosis. The ability to differentiate between radiation necrosis, pseudoprogression, and tumor recurrence remains a diagnostic conundrum with varying treatment options. In this review, we will discuss the pathophysiology, diagnostic imaging modalities, and treatments of these post-radiation treatment effects. We focus on the latest developments in magnetic resonance imaging (MRI) modalities including imaging biomarkers and the newest therapeutics such as VEGF inhibitors, Hyperbaric Oxygen Therapy, sensitized cytotoxic T cells, and Laser Interstitial Thermal Therapy (LITT)...
October 7, 2017: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/29028093/mir-144-3p-serves-as-a-tumor-suppressor-by-targeting-fzd7-and-predicts-the-prognosis-of-human-glioblastoma
#6
Z-X Cheng, Y-X Song, Z-Y Wang, Y Wang, Y Dong
OBJECTIVE: Previous research indicated that miR-144-3p was associated with the regulation of the carcinogenic processes, but the role of miR-144-3p in glioblastoma (GBM) remains unclear. In this study, we aimed to analyze the role of miR-144-3p in GBM. PATIENTS AND METHODS: The expression of miR-144-3p was measured in GBM tissues and adjacent non-malignant tissues using qRT-PCR. The correlation of miR-144-3p with clinicopathological features and prognosis was also analyzed...
September 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29026272/incidence-of-diabetes-mellitus-and-neoplasia-in-japanese-short-statured-children-treated-with-growth-hormone-in-the-genetics-and-neuroendocrinology-of-short-stature-international-study-genesis
#7
Susumu Yokoya, Tomonobu Hasegawa, Keiichi Ozono, Hiroyuki Tanaka, Susumu Kanzaki, Toshiaki Tanaka, Kazuo Chihara, Nan Jia, Christopher J Child, Katsuichiro Ihara, Jumpei Funai, Noriyuki Iwamoto, Yoshiki Seino
The primary goal of the Genetics and Neuroendocrinology of Short Stature International Study (GeNeSIS) was to assess the safety and effectiveness of Humatrope(®), a GH preparation, in the treatment of pediatric patients with short stature. We report our findings in the GH-treated Japanese pediatric population focusing on the incidence of type 2 diabetes (T2D) and occurrence of neoplasms. A total of 2,345 Japanese patients were assessed for safety. During a mean observation period of 3.2 yr, T2D occurred in 3 patients (0...
2017: Clinical Pediatric Endocrinology: Case Reports and Clinical Investigations: Official Journal of the Japanese Society for Pediatric Endocrinology
https://www.readbyqxmd.com/read/29020535/treatment-of-glioblastoma
#8
Joo Yeon Nam, John F de Groot
Glioblastoma is the most common and most aggressive form of primary brain tumor in adults and contributes to high social and medical burden as a result of its incurable nature and significant neurologic morbidity. Despite ongoing research, there has not been improvement in survival in glioblastoma. This review discusses recent advances in clinically significant molecular profiling, including IDH mutation status and O(6)-methylguanine-DNA methyltransferase ( MGMT) promoter methylation. We review updates in management of newly diagnosed and recurrent glioblastoma, as well as common difficulties in management, such as pseudoprogression and pseudoresponse...
October 2017: Journal of Oncology Practice
https://www.readbyqxmd.com/read/29016865/inability-of-positive-phase-ii-clinical-trials-of-investigational-treatments-to-subsequently-predict-positive-phase-iii-clinical-trials-in-glioblastoma
#9
Jacob J Mandel, Shlomit Yust-Katz, Akash J Patel, David Cachia, Diane Liu, Minjeong Park, Ying Yuan, Thomas A Kent, John F de Groot
Background: Glioblastoma is the most common primary malignant brain tumor in adults, but effective therapies are lacking. With the scarcity of positive phase III trials, which are increasing in cost, we examined the ability of positive phase II trials to predict statistically significant improvement in clinical outcomes of phase III trials. Methods: A PubMed search was conducted to identify phase III clinical trials performed in the past 25 years for patients with newly diagnosed or recurrent glioblastoma...
July 31, 2017: Neuro-oncology
https://www.readbyqxmd.com/read/29016809/longitudinal-assessment-of-late-onset-neurologic-conditions-in-survivors-of-childhood-central-nervous-system-tumors-a-childhood-cancer-survivor-study-report
#10
Elizabeth M Wells, Nicole J Ullrich, Kristy Seidel, Wendy Leisenring, Charles A Sklar, Gregory T Armstrong, Lisa Diller, Allison King, Kevin R Krull, Joseph P Neglia, Marilyn Stovall, Kimberly Whelan, Kevin C Oeffinger, Leslie L Robison, Roger J Packer
Background: Survivors of childhood central nervous system (CNS) tumors experience high rates of treatment-related neurologic sequelae. Whether survivors continue to be at increased risk for new events as they age is unknown. Methods: Adverse neurologic health conditions in 5-year survivors of CNS tumors from the Childhood Cancer Survivor Study (CCSS, n=1876) were evaluated longitudinally at a median 23.0 years from diagnosis, range 5.1 - 38.9; median age at last evaluation 30...
August 22, 2017: Neuro-oncology
https://www.readbyqxmd.com/read/28991721/clinical-and-imaging-correlation-in-patients-with-pathologically-confirmed-tumefactive-demyelinating-lesions
#11
Matthew A Tremblay, Javier E Villanueva-Meyer, Soonmee Cha, Tarik Tihan, Jeffrey M Gelfand
OBJECTIVES: To characterize clinical and imaging features in patients with pathologically confirmed demyelinating lesions. METHODS: In this retrospective chart review, we analyzed clinical-radiological-pathological correlations in patients >15years old who underwent brain biopsy at our institution between 2000 and 2015 and had inflammatory demyelination on neuropathology. RESULTS: Of 31 patients, the mean age was 42years (range 16 to 69years) and 55% were female...
October 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28990708/astroblastoma-a-distinct-tumor-entity-characterized-by-alterations-of-the-x-chromosome-and-mn1-rearrangement
#12
Takanori Hirose, Sumihito Nobusawa, Kazuhiko Sugiyama, Vishwa J Amatya, Naomi Fujimoto, Atsushi Sasaki, Yoshiki Mikami, Akiyoshi Kakita, Shinya Tanaka, Hideaki Yokoo
Astroblastoma is a rare, enigmatic tumor of the central nervous system (CNS) which shares some clinicopathologic aspects with other CNS tumors, especially ependymoma. To further clarify the nature of astroblastoma, we performed clinicopathologic and molecular genetic studies on eight cases of astroblastoma. The median age of the patients was 14.5 years, ranging from 5 to 60 years, and seven of the patients were female. All tumors arose in the cerebral hemisphere and radiologically appeared to be well-bordered, nodular tumors often associated with cystic areas and contrast-enhancement...
October 9, 2017: Brain Pathology
https://www.readbyqxmd.com/read/28988289/whole-body-magnetic-resonance-imaging-wb-mri-and-brain-mri-baseline-surveillance-in-tp53-germline-mutation-carriers-experience-from-the-li-fraumeni-syndrome-education-and-early-detection-lead-clinic
#13
Jasmina Bojadzieva, Behrang Amini, Suzanne F Day, Tiffiny L Jackson, Parijatham S Thomas, Brandy J Willis, Whitney R Throckmorton, Najat C Daw, Therese B Bevers, Louise C Strong
Individuals with Li-Fraumeni syndrome (LFS) have a significantly increased lifetime cancer risk affecting multiple organ sites. Therefore, novel comprehensive screening approaches are necessary to improve cancer detection and survival in this population. The objective of this study was to determine the diagnostic performance of whole body MRI (WB-MRI) and dedicated brain MRI screening as part of a comprehensive screening clinic called Li-Fraumeni Education and Early Detection (LEAD) at MD Anderson Cancer Center...
October 7, 2017: Familial Cancer
https://www.readbyqxmd.com/read/28987834/subtemporal-approach-for-gross-total-resection-of-retrochiasmatic-craniopharyngiomas-our-experience-on-30-cases
#14
Grzegorz Zieliński, Emir Ahmed Sajjad, Łukasz Robak, Andrzej Koziarski
BACKGROUND: Surgical treatment of retrochiasmatic craniopharyngiomas is associated with higher rates of complications, mortality, failure of complete removal, and recurrence when compared to craniopharyngiomas located elsewhere. These tumors lie behind the optic chiasm and, when large, can extend upward into the third ventricle and downward along the brain stem making their adequate exposure challenging. Most of the proposed techniques either employ a trans lamina terminalis route or require wide bony exposures...
October 4, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28987827/surgical-management-of-giant-intracranial-meningioma-operative-nuances-challenges-and-outcome
#15
Vinayak Narayan, Shyamal C Bir, Nasser Mohammed, Amey R Savardekar, Devi Prasad Patra, Anil Nanda
INTRODUCTION: The giant intracranial meningioma [GIM] constitutes a different spectrum of brain tumors which invade the vital neurovascular structures and makes the primary mode of treatment, surgery, a technically challenging one. The surgery of GIM is unique due to its large size, prominent vascularity, entangling and limited visualisation of various neurovascular structures and severe cerebral edema. The study reports the authors surgical experience of 80 GIM cases, the operative challenges and surgical outcome...
October 5, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28986231/microsphere-embolization-of-hypervascular-posterior-fossa-tumors-a-technical-note
#16
Oluwaseun O Akinduro
BACKGROUND: Preoperative embolization of highly vascular tumors of the posterior fossa can decrease morbidity and operative blood loss. No clear consensus exists for the embolization agent of choice for optimal devascularization of these tumors. OBJECTIVE: The purpose of this analysis was to assess the effectiveness of microsphere embolization, in reducing tumor hypervascularity before surgical resection METHODS: We retrospectively reviewed medical records of patients with hypervascular posterior fossa tumors who were treated at a single institution from 2009 through 2016...
October 3, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28986230/machine-learning-and-neurosurgical-outcome-prediction-a-systematic-review
#17
REVIEW
Joeky T Senders, Patrick C Staples, Aditya V Karhade, Mark M Zaki, William B Gormley, Marike L D Broekman, Timothy R Smith, Omar Arnaout
OBJECTIVE: Accurate measurement of surgical outcomes is highly desirable to optimize surgical decision-making. An important element of surgical decision making is identification of the patient cohort that will benefit from surgery prior to the intervention. Machine learning (ML) enables computers to learn from previous data to make accurate predictions on new data. In this systematic review, we evaluate the potential of ML for neurosurgical outcome prediction. METHODS: A systematic search in the Pubmed and Embase databases was performed to identify all potential relevant studies up to January 1, 2017...
October 3, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28981729/immunochemotherapy-using-rituximab-rtx-and-high-dose-methotrexate-hd-mtx-an-evaluation-of-the-addition-of-rtx-to-hd-mtx-in-recurrent-primary-central-nervous-system-lymphoma-pcnsl
#18
Yasuji Miyakita, Makoto Ohno, Masamichi Takahashi, Yoshihiro Muragaki, Hitoshi Katai, Yoshitaka Narita
Background: There is increasing evidence that MTX-based chemotherapy is superior to HD-MTX alone. Rituximab (RTX) is effective in a variety of B-cell lymphomas and may enter the brain. The purpose of this study is to evaluate the addition of RTX to HD-MTX in recurrent primary central nervous system lymphoma (PCNSL). Methods: Patients diagnosed with recurrent PCNSL at our institution between 2004 and 2009 were treated with HD-MTX (3.5-5.5 g/m2) every 2 weeks. From 2010, RTX (375 mg/m2) was administered every 2 weeks along with HD-MTX...
October 1, 2017: Japanese Journal of Clinical Oncology
https://www.readbyqxmd.com/read/28978116/modulation-of-dkk-3-and-claudin-5-as-new-therapeutic-strategy-in-the-treatment-of-meningiomas
#19
Maria Caffo, Emanuela Esposito, Valeria Barresi, Gerardo Caruso, Salvatore M Cardali, Mariagrazia Rinaldi, Raffaella Mallamace, Michela Campolo, Giovanna Casili, Alfredo Conti, Antonino Germanò, Salvatore Cuzzocrea, Letteria Minutoli
Meningiomas are the most common tumors of the central nervous system, where the incidence is around 25% of all primary brain tumors. The optimal treatment is represented by total resection accompanied by the removal of the dura mater and bone when infiltrated by the tumor. The histological grading is the most important prognostic factor in the outcome. However, recurrences do occur in a significant proportion (10-25%) of cases, representing the most relevant clinical complication. Molecular therapies are providing to give different opportunities in the development of new treatments...
September 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28968316/management-of-a-brain-abscess-presumably-caused-by-radiation-osteomyelitis-of-the-mandible
#20
Tadahide Noguchi, Naruo Okada, Yoshiyuki Tsuchiya, Shunji Sarukawa, Akifumi Fujita, Hiroshi Nishino, Yoshinori Jinbu, Yoshiyuki Mori
In this clinical report, we present the management of a brain abscess that was presumed to be caused by radiation osteomyelitis of the mandible. The patient underwent chemoradiotherapy for oropharyngeal carcinoma on the left side at the Department of Otolaryngology of our hospital in 2000. Local recurrence or metastasis did not occur post-treatment. In January 2009, the patient was diagnosed with radiation osteomyelitis of the mandible on the left side, complicated by a pathologic fracture. In July 2011, numbness occurred in the left upper extremity and the patient was transferred to the emergency center of our hospital...
September 29, 2017: Journal of Craniofacial Surgery
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