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https://www.readbyqxmd.com/read/29230924/response-in-a-child-with-a-braf-v600e-mutated-desmoplastic-infantile-astrocytoma-upon-retreatment-with-vemurafenib
#1
Cornelis M van Tilburg, Florian Selt, Felix Sahm, Heidi Bächli, Stefan M Pfister, Olaf Witt, Till Milde
Infants with low-grade glioma (LGG) and diencephalic syndrome have a poor outcome. The patient described here had a desmoplastic infantile astrocytoma harboring a BRAF V600E mutation. After relapse following initial standard chemotherapy treatment, he was successfully treated with the BRAF V600E inhibitor vemurafenib at the age of 3 years 11 months and 5 years 0 months. A rapid response was observed on both occasions. This illustrates the possibility of continuous oncogenic addiction and the therapeutic potential of BRAF V600E inhibitor monotherapy in LGG, even in very young severely compromised children...
December 12, 2017: Pediatric Blood & Cancer
https://www.readbyqxmd.com/read/29148317/brainstem-glioma-prediction-of-histopathologic-grade-based-on-conventional-mr-imaging
#2
Yashar Moharamzad, Morteza Sanei Taheri, Farhad Niaghi, Elham Shobeiri
Objective The objective of this article is to investigate the association between specific MR imaging findings and histopathologic grading (low-grade vs. high-grade) of brainstem gliomas (BSGs). Methods Sixty-two males and 34 females (mean (standard deviation, SD) age of 24.61 (17.20) years, range = 3 to 70 years) with histologically diagnosed BSG underwent conventional 1.5 T MR imaging, which included T1-weighted (T1W), T2W, and post-contrast T1W sequences. There were 39 children (mean age of 9.38 years) and 57 adults (mean age of 35 years)...
January 1, 2017: Neuroradiology Journal
https://www.readbyqxmd.com/read/29137285/genetic-and-immune-features-of-resectable-malignant-brainstem-gliomas
#3
Yang Zhang, Changcun Pan, Junmei Wang, Jingli Cao, Yuhan Liu, Yajie Wang, Liwei Zhang
We surveyed common genetic mutations (IDH1, H3F3A, PPM1D, and TP53) and immune features (PD-L1 expression and CD8(+) T cell tumor infiltration) in a series of 62 malignant brainstem gliomas that were resected via microsurgery. IDH1 mutations were mutually exclusive with H3F3A mutations. IDH1 mutations appeared only in adults and occurred more frequently in tumors larger than 10cm(3) (8/29 vs 1/32, Fisher's exact test, p=0.010). H3F3A mutations occurred more frequently in children and adolescent patients (19/24 vs 18/38, chi-square test, p=0...
October 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/29090526/a-pediatric-brain-tumor-consortium-phase-ii-trial-of-capecitabine-rapidly-disintegrating-tablets-with-concomitant-radiation-therapy-in-children-with-newly-diagnosed-diffuse-intrinsic-pontine-gliomas
#4
Lindsay B Kilburn, Mehmet Kocak, Patricia Baxter, Tina Young Poussaint, Arnold C Paulino, Christine McIntyre, Annabelle Lemenuel-Diot, Christine Lopez-Diaz, Larry Kun, Murali Chintagumpala, Jack M Su, Alberto Broniscer, Justin N Baker, Eugene I Hwang, Maryam Fouladi, James M Boyett, Susan M Blaney
BACKGROUND: We conducted a phase II study of oral capecitabine rapidly disintegrating tablets given concurrently with radiation therapy (RT) to assess progression-free survival (PFS) in children with newly diagnosed diffuse intrinsic pontine gliomas (DIPG). PATIENTS AND METHODS: Children 3-17 years with newly diagnosed DIPG were eligible. Capecitabine, 650 mg/m(2) /dose BID (maximum tolerated dose [MTD] in children with concurrent radiation), was administered for 9 weeks starting the first day of RT...
November 1, 2017: Pediatric Blood & Cancer
https://www.readbyqxmd.com/read/29076294/corrigendum-population-pharmacokinetics-of-selumetinib-and-its-metabolite-n-desmethyl-selumetinib-in-adult-patients-with-advanced-solid-tumors-and-children-with-low-grade-gliomas
#5
(no author information available yet)
No abstract text is available yet for this article.
October 2017: CPT: Pharmacometrics & Systems Pharmacology
https://www.readbyqxmd.com/read/29049847/neurofibromatosis-type-1-and-optic-pathway-glioma-molecular-interplay-and-therapeutic-insights
#6
REVIEW
Soumen Khatua, David H Gutmann, Roger J Packer
Children with neurofibromatosis type 1 (NF1) are predisposed to develop central nervous system neoplasms, the most common of which are low-grade gliomas (LGGs). The absence of human NF1 associated LGG-derived cell lines, coupled with an inability to generate patient-derived xenograft models, represents barriers to profile molecularly targeted therapies for these tumors. Thus, genetically engineered mouse models have been identified to evaluate the interplay between Nf1-deficient tumor cells and nonneoplastic stromal cells to evaluate potential therapies for these neoplasms...
October 19, 2017: Pediatric Blood & Cancer
https://www.readbyqxmd.com/read/29045978/-clinicopathologic-features-of-infant-dysembryoplastic-neuroepithelial-tumor-a-case-report-and-literature-review
#7
H Wang, J T Ye, H X Yao, D Li, Y Dong
Dysembryoplastic neuroepithelial tumor (DNT) has traditionally been viewed as rare benign tumors that present with seizure widely considered curable with surgery alone. Most DNTs occur in childhood and young adults. However, rare reported cases occur in infants. This paper reported an infant case of DNT and its diagnosis, differential diagnosis, treatment, molecular features and prognosis based on the review of current literatures. The age onset of this patient was only 11 months old. The clinical manifestations were partial seizures and the imaging data untypical; CT and MRI were all supportive of astrocytoma...
October 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/29037775/neuroendocrine-late-effects-after-tailored-photon-radiotherapy-for-children-with-low-grade-gliomas-long-term-correlation-with-tumour-and-treatment-parameters
#8
Deborah Aloi, Liliana Belgioia, Salvina Barra, Flavio Giannelli, Francesca Cavagnetto, Fabio Gallo, Claudia Milanaccio, MariaLuisa Garrè, Sonia Di Profio, Natascia Di Iorgi, Renzo Corvò
PURPOSE: To evaluate neuroendocrine late effects in paediatric patients with low grade glioma (LGG) who underwent radiotherapy. METHODS AND MATERIAL: We performed a retrospective evaluation of 40 children with LGG treated from July 2002 to January 2015 with external radiotherapy. Tumour locations were cerebral hemisphere (n=2); posterior fossa (n=15); hypothalamic-pituitary axis (HPA, n=15); spine (n=5). Three patients presented a diffuse disease. We looked for a correlation between endocrine toxicity and tumour and treatment parameters...
October 13, 2017: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/28969094/high-grade-glioma-in-very-young-children-a-rare-and-particular-patient-population
#9
REVIEW
Moatasem El-Ayadi, Marc Ansari, Dominik Sturm, Gerrit H Gielen, Monika Warmuth-Metz, Christof M Kramm, Andre O von Bueren
In the past years, pediatric high-grade gliomas (HGG) have been the focus of several research articles and reviews, given the recent discoveries on the genetic and molecular levels pointing out a clinico-biological uniqueness of the pediatric population compared to their adult counterparts with HGG. On the other hand, there are only scarce data about HGG in very young children (below 3 years of age at diagnosis) due to their relatively low incidence. However, the few available data suggest further distinction of this very rare subgroup from older children and adults at several levels including their molecular and biological characteristics, their treatment management, as well as their outcome...
September 8, 2017: Oncotarget
https://www.readbyqxmd.com/read/28968159/pediatric-thalamic-gliomas-an-updated-review
#10
REVIEW
Avneesh Gupta, Nathan Shaller, Kathryn A McFadden
CONTEXT: - Neoplasms originating in the thalamus are rare overall (1% of all brain tumors); however, they comprise approximately 5% of pediatric intracranial tumors and approach 15% of all malignant pediatric intracranial tumors in some series. OBJECTIVE: - To update readers about the current understanding of the diverse histology, biology, and behavior of pediatric thalamic tumors. Histologic verification is now thought to be critical for planning treatment, and, as a result, biopsy and total/subtotal resections are much more common today than in the past...
October 2017: Archives of Pathology & Laboratory Medicine
https://www.readbyqxmd.com/read/28941532/optic-pathway-gliomas-secondary-to-neurofibromatosis-type-1
#11
Shannon Jeanine Beres, Robert A Avery
Children with neurofibromatosis type 1 frequently manifest optic pathway gliomas-low-grade gliomas intrinsic to the visual pathway. This review describes the molecular and genetic mechanisms driving optic pathway gliomas as well as the clinical symptoms of this relatively common genetic condition. Recommendations for clinical management and descriptions of the newest imaging techniques are discussed.
May 2017: Seminars in Pediatric Neurology
https://www.readbyqxmd.com/read/28912153/comprehensive-genomic-profiling-of-282-pediatric-low-and-high-grade-gliomas-reveals-genomic-drivers-tumor-mutational-burden-and-hypermutation-signatures
#12
Adrienne Johnson, Eric Severson, Laurie Gay, Jo-Anne Vergilio, Julia Elvin, James Suh, Sugganth Daniel, Mandy Covert, Garrett M Frampton, Sigmund Hsu, Glenn J Lesser, Kimberly Stogner-Underwood, Ryan T Mott, Sarah Z Rush, Jennifer J Stanke, Sonika Dahiya, James Sun, Prasanth Reddy, Zachary R Chalmers, Rachel Erlich, Yakov Chudnovsky, David Fabrizio, Alexa B Schrock, Siraj Ali, Vincent Miller, Philip J Stephens, Jeffrey Ross, John R Crawford, Shakti H Ramkissoon
BACKGROUND: Pediatric brain tumors are the leading cause of death for children with cancer in the U.S. Incorporating next-generation sequencing data for both pediatric low-grade (pLGGs) and high-grade gliomas (pHGGs) can inform diagnostic, prognostic, and therapeutic decision-making. MATERIALS AND METHODS: We performed comprehensive genomic profiling on 282 pediatric gliomas (157 pHGGs, 125 pLGGs), sequencing 315 cancer-related genes and calculating the tumor mutational burden (TMB; mutations per megabase [Mb])...
September 14, 2017: Oncologist
https://www.readbyqxmd.com/read/28828715/treatment-of-childhood-astrocytomas-with-irinotecan-and-cisplatin
#13
J Mora, S Perez-Jaume, O Cruz
BACKGROUND: Previously we described the outcome of children with spinal cord astrocytoma treated with irinotecan and cisplatin (I/C). We here report the review of the initial institutional experience using this combination for children with low-grade glioma (LGG). PROCEDURE: I/C chemotherapy consisted of weekly cisplatin (30 mg/m(2)) and irinotecan (50-65 mg/m(2)) for a total maximum of 16 doses, administered in an outpatient basis. RESULTS: Between November 2002 and December 2009, 46 children (median age 6...
August 21, 2017: Clinical & Translational Oncology
https://www.readbyqxmd.com/read/28808787/malignant-transformation-of-a-conservatively-managed-incidental-childhood-cerebral-mass-lesion-controversy-regarding-management-paradigm
#14
Jehuda Soleman, Jonathan Roth, Zvi Ram, Michal Yalon, Shlomi Constantini
BACKGROUND: Incidental findings on neuroimaging in the pediatric population are an emerging treatment challenge. Treatment options for these incidental childhood brain mass lesions, which radiologically may be assumed to be low-grade gliomas (LGG), vary, ranging from careful conservative "wait and scan" treatment to surgical biopsy, gross total resection, and upfront radiation and/or chemotherapy. As malignant transformation of LGG in children is extremely rare, some series advocate careful conservative management of these lesions; however, universal treatment protocols are not totally agreed upon...
December 2017: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/28775233/genetic-and-immune-features-of-resectable-malignant-brainstem-gliomas
#15
Yang Zhang, Changcun Pan, Junmei Wang, Jingli Cao, Yuhan Liu, Yajie Wang, Liwei Zhang
We surveyed common genetic mutations (IDH1, H3F3A, PPM1D, and TP53) and immune features (PD-L1 expression and CD8+ T cell tumor infiltration) in a series of 62 malignant brainstem gliomas that were resected via microsurgery. IDH1 mutations were mutually exclusive with H3F3A mutations. IDH1 mutations appeared only in adults and occurred more frequently in tumors larger than 10cm3 (8/29 vs 1/32, Fisher's exact test, p=0.010). H3F3A mutations occurred more frequently in children and adolescent patients (19/24 vs 18/38, chi-square test, p=0...
July 28, 2017: Oncotarget
https://www.readbyqxmd.com/read/28772286/prevalence-of-cancer-at-baseline-screening-in-the-national-cancer-institute-li-fraumeni-syndrome-cohort
#16
Phuong L Mai, Payal P Khincha, Jennifer T Loud, Rosamma M DeCastro, Renée C Bremer, June A Peters, Chia-Ying Liu, David A Bluemke, Ashkan A Malayeri, Sharon A Savage
Importance: Establishment of an optimal cancer surveillance program is important to reduce cancer-related morbidity and mortality in individuals with Li-Fraumeni syndrome, a rare, highly penetrant cancer predisposition syndrome. Objective: To determine the feasibility and efficacy of a comprehensive cancer screening regimen in Li-Fraumeni syndrome, using multiple radiologic techniques, including rapid whole-body magnetic resonance imaging (MRI) and laboratory measurements...
August 3, 2017: JAMA Oncology
https://www.readbyqxmd.com/read/28766000/-pediatric-brain-tumors
#17
REVIEW
W Reith, S Bodea, R Mühl-Benninghaus
Brain tumors differ between children and adults both in histology and localization. Malignant gliomas and meningiomas predominate in adults while medulloblastomas and low-grade astrocytomas are the most frequent brain tumors in children. More than one half (50-70%) of pediatric brain tumors have an infratentorial location but only approximately 30% in adults. Brain tumors can be recognized in sonography, cranial computed tomography (CCT) and magnetic resonance imaging (MRI) by their space-consuming character and by their divergent density and intensity in comparison to normal brain parenchyma...
September 2017: Der Radiologe
https://www.readbyqxmd.com/read/28708330/mortality-in-children-with-low-grade-glioma-or-glioneuronal-tumors-a-single-institution-study
#18
Santhosh A Upadhyaya, Yahya Ghazwani, Shengjie Wu, Alberto Broniscer, Fredrick A Boop, Amar Gajjar, Ibrahim Qaddoumi
BACKGROUND: While pediatric low-grade glioma/glioneuronal tumors (LGG/LGGNTs) are considered slow-growing, indolent tumors with excellent long-term prognosis, mortality due to the disease is not unknown. Few studies have addressed the cause of death in this population. METHODS: Retrospective review of clinicopathologic and radiologic data for children 21 years or younger with LGG/LGGNT who died at St. Jude Children's Research Hospital between April 1985 and June 2015...
January 2018: Pediatric Blood & Cancer
https://www.readbyqxmd.com/read/28686121/surgical-and-molecular-considerations-in-the-treatment-of-pediatric-thalamopeduncular-tumors
#19
Ryan P Lee, Kimberly A Foster, Jock C Lillard, Paul Klimo, David W Ellison, Brent Orr, Frederick A Boop
OBJECTIVE Thalamopeduncular tumors are a group of pediatric low-grade gliomas that arise at the interface of the thalamus and brainstem peduncle. They typically occur within the first 2 decades of life, presenting with progressive spastic hemiparesis. Treatment strategies, including surgical intervention, have varied significantly. The authors present their experience in the treatment of 13 children, ages 2-15 years, with non-neurofibromatosis-related pilocytic astrocytomas located in the thalamopeduncular region...
September 2017: Journal of Neurosurgery. Pediatrics
https://www.readbyqxmd.com/read/28658822/recurrent-optic-nerve-pilocytic-astrocytoma-a-rare-case
#20
Sudha Girish Menon, Vuppalapati Nishant Janardhana Raju, Sulatha V Bhandary, Krishna Rao Addoor
Pilocytic astrocytoma is a low grade glioma that affects mostly children and young adults and can occur anywhere in the central nervous system. Pilocytic astrocytoma of the optic nerve is an equally indolent subtype that is often associated with Neurofibromatosis Type I (NFI). A 40-year-old male presented with left sided axial proptosis and exposure keratopathy. MRI revealed a mass in left proximal orbit, extending posteriorly abutting the chiasma and the right optic nerve on MRI. Enucleation of the left eye along with near total excision of intracranial part of the mass was performed...
May 2017: Journal of Clinical and Diagnostic Research: JCDR
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