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Peripheral nerve sheath tumor

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https://www.readbyqxmd.com/read/28212127/surgical-management-of-mandibular-intraosseous-schwannomas
#1
Anthony DeLeonibus, Bahar Bassiri Gharb, Francis Papay, James E Zins, Antonio Rampazzo
Intraosseous schwannomas of the mandible are rare tumors that usually arise from peripheral nerve sheaths of the main trunk or branches of the inferior alveolar nerve (IAN).A systematic review of the English literature through PubMed was conducted from 1945 to 2016. Forty-nine patients of mandibular intraosseous schwannomas were identified. The most common location of the tumor was the posterior mandible (61.2%). There were 28 patients in whom the tumor involved the IAN (57.1%). The most commonly performed procedures included enucleation through a mucoperiosteal flap and a bone window (73%), curettage (10%), segmental mandibulectomy (10%), and sagittal split ramus osteotomy (6%)...
February 16, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28184331/verticillin-a-inhibits-leiomyosarcoma-and-malignant-peripheral-nerve-sheath-tumor-growth-via-induction-of-apoptosis
#2
A Zewdu, G Lopez, D Braggio, C Kenny, D Constantino, H K Bid, K Batte, O H Iwenofu, N H Oberlies, C J Pearce, A M Strohecker, D Lev, R E Pollock
OBJECTIVE: The heterogeneity of soft tissue sarcoma (STS) represents a major challenge for the development of effective therapeutics. Comprised of over 50 different histology subtypes of various etiologies, STS subsets are further characterized as either karyotypically simple or complex. Due to the number of genetic anomalies associated with genetically complex STS, development of therapies demonstrating potency against this STS cluster is especially challenging and yet greatly needed...
November 2016: Clinical & Experimental Pharmacology
https://www.readbyqxmd.com/read/28175527/173%C3%A2-a-clinical-and-radiographic-score-to-assess-malignant-potential-of-peripheral-nerve-sheath-tumors
#3
Jonathan Yun, Christopher J Winfree
No abstract text is available yet for this article.
August 1, 2016: Neurosurgery
https://www.readbyqxmd.com/read/28147331/aurora-a-kinase-inhibition-enhances-oncolytic-herpes-virotherapy-through-cytotoxic-synergy-and-innate-cellular-immune-modulation
#4
Mark A Currier, Les Sprague, Tilat A Rizvi, Brooke Nartker, Chun-Yu Chen, Pin-Yi Wang, Brian J Hutzen, Meghan R Franczek, Ami V Patel, Katherine E Chaney, Keri A Streby, Jeffrey A Ecsedy, Joe Conner, Nancy Ratner, Timothy P Cripe
Malignant peripheral nerve sheath tumor (MPNST) and neuroblastoma models respond to the investigational small molecule Aurora A kinase inhibitor, alisertib. We previously reported that MPNST and neuroblastomas are also susceptible to oncolytic herpes virus (oHSV) therapy. Herein, we show that combination of alisertib and HSV1716(HSV1716), a virus derived from HSV-1 and attenuated by deletion of RL1, exhibits significantly increased antitumor efficacy compared to either monotherapy. Alisertib and HSV1716 reduced tumor growth and increased survival in two xenograft models of MPNST and neuroblastoma...
January 28, 2017: Oncotarget
https://www.readbyqxmd.com/read/28142367/peripheral-nerve-sheath-tumor
#5
Rachel Condon, Christopher Allen
A 26-year-old female military officer directly accessed physical therapy, relating a 4-month history of deep, intermittent left medial knee pain with running. Following physical therapy treatment, she was referred to her primary care manager. Magnetic resonance imaging of the knee was ordered, revealing a peripheral nerve sheath tumor with benign features within the distal gracilis attached to the saphenous nerve. J Orthop Sports Phys Ther 2017;47(2):124. doi:10.2519/jospt.2017.5757.
February 2017: Journal of Orthopaedic and Sports Physical Therapy
https://www.readbyqxmd.com/read/28142366/benign-peripheral-nerve-sheath-tumor-in-a-distance-runner
#6
Laura E Stanley, David J Berkoff
A 31-year-old female runner presented to physical therapy via direct access with an 8-month history of atraumatic left lateral calf pain. Following 1 month of physical therapy, the patient was referred to an orthopaedic sports medicine physician. Ultrasound imaging revealed a 2-cm hypoechoic mass with well-defined margins in the left proximal lateral soleus, while Doppler ultrasound demonstrated increased color flow surrounding the mass. Magnetic resonance imaging findings were consistent with a nerve sheath tumor, and ultrasound-guided tissue biopsy determined the mass to be a benign peripheral nerve sheath tumor...
February 2017: Journal of Orthopaedic and Sports Physical Therapy
https://www.readbyqxmd.com/read/28135565/dissecting-clinical-heterogeneity-in-neurofibromatosis-type-1
#7
Courtney L Monroe, Sonika Dahiya, David H Gutmann
Neurofibromatosis type 1 (NF1) is a common neurogenetic disorder in which affected children and adults are predisposed to the development of benign and malignant nervous system tumors. Caused by a germline mutation in the NF1 tumor suppressor gene, individuals with NF1 are prone to optic gliomas, malignant gliomas, neurofibromas, and malignant peripheral nerve sheath tumors, as well as behavioral, cognitive, motor, bone, cardiac, and pigmentary abnormalities. Although NF1 is a classic monogenic syndrome, the clinical features of the disorder and their impact on patient morbidity are variable, even within individuals who bear the same germline NF1 gene mutation...
January 24, 2017: Annual Review of Pathology
https://www.readbyqxmd.com/read/28129857/discovering-novel-oncogenic-pathways-and-new-therapies-using-zebrafish-models-of-sarcoma
#8
M N Hayes, D M Langenau
Sarcoma is a type of cancer affecting connective, supportive, or soft tissue of mesenchymal origin. Despite rare incidence in adults (<1%), over 15% of pediatric cancers are sarcoma. Sadly, both adults and children with relapsed or metastatic disease have devastatingly high rates of mortality. Current treatment options for sarcoma include surgery, radiation, and/or chemotherapy; however, significant limitations exist with respect to the efficacy of these strategies. Strong impetus has been placed on the development of novel therapies and preclinical models for uncovering mechanisms involved in the development, progression, and therapy resistance of sarcoma...
2017: Methods in Cell Biology
https://www.readbyqxmd.com/read/28124441/confirmation-of-mutation-landscape-of-nf1-associated-malignant-peripheral-nerve-sheath-tumors
#9
Pierre Sohier, Armelle Luscan, Angharad Lloyd, Kevin Ashelford, Ingrid Laurendeau, Audrey Briand-Suleau, Dominique Vidaud, Nicolas Ortonne, Eric Pasmant, Meena Upadhyaya
The commonest tumors associated with neurofibromatosis type 1 (NF1) are benign peripheral nerve sheath tumors, called neurofibromas. Malignant transformation of neurofibromas into aggressive MPNSTs may occur with a poor patient prognosis. A co-operative role of SUZ12 or EED inactivation, along with NF1, TP53, and CDKN2A loss-of-function, has been proposed to drive progression to MPNSTs. An exome sequencing analysis of eight MPNSTs, one plexiform neurofibroma, and seven cutaneous neurofibromas was undertaken...
January 25, 2017: Genes, Chromosomes & Cancer
https://www.readbyqxmd.com/read/28105622/-association-of-peripheral-nerve-invasion-with-clinicopathological-factors-and-prognosis-of-colorectal-cancer
#10
Dong Han, Ying Wei, Xidi Wang, Geng Wang, Yinggang Chen
OBJECTIVE: To investigate the association of peripheral nerve invasion (PNI) with clinicopathological factors and prognosis of colorectal cancer. METHODS: Clinicopathological data and Surgical specimens of 372 colorectal cancer patients who underwent radical resection from January 2011 to June 2012 in The Second Affiliated Hospital of Harbin Medical University were collected. Histopathological evaluation of tissue samples was conducted with hematoxylin and eosin-stained sections...
January 25, 2017: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/28103882/a-distal-ileum-malignant-peripheral-nerve-sheath-tumor-causing-intussusception-in-a-patient-in-china-a-case-report
#11
Lin-Bo Zhu, Peng-Fei Li, Wei-Hua Xiao, Peng-Bin Zhang, Jun-Qiang Li, Ming-Fei Sun
BACKGROUND: Malignant peripheral nerve sheath tumors (MPNSTs) arise from a peripheral nerve or display nerve sheath differentiation. Most MPNSTs typically originate on the trunk, extremities, head, neck, and paravertebral regions. Gastrointestinal MPNSTs are rare entities with only 10 cases reported worldwide in the literatures. CASE PRESENTATION: Here, we report the first Chinese case of a malignant peripheral nerve sheath tumor of the distal ileum presenting as intussusception...
January 19, 2017: World Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28093344/unusual-intracerebral-presentation-of-a-myxoid-neurofibroma-a-case-report
#12
Marcos Devanir Silva da Costa, Karina Hoshino, João Norberto Stavale, Oreste Paulo Lanzoni, Sergio Cavalheiro, Manoel Antonio Paiva Neto
BACKGROUND: Neurofibromas are benign nerve sheath tumors that usually affect peripheral nerves and are related to Neurofibromatosis type 1; however, they have not been described as a cause of intraparenchymal brain tumor. CASE DESCRIPTION: We report a case of intracranial myxoid neurofibroma in a 19-year-old female patient manifested as an intense and progressive cephalea, followed by nausea, vomiting, and photo- and phonophobia. Computerized tomography and magnetic resonance imaging showed an extent expansive left frontoparietal parafalcine/parasagittal tumor...
January 13, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28088216/immunohistochemical-features-of-giant-cell-ependymoma-of-the-filum-terminale-with-unusual-clinical-and-radiological-presentation
#13
Fernando Candanedo-Gonzalez, Cindy Sharon Ortiz-Arce, Samuel Rosales-Perez, Ana Lilia Remirez-Castellanos, Candelaria Cordova-Uscanga, Armando Gamboa-Dominguez
BACKGROUND: Giant cell ependymoma of the filum terminale is a rare variant, generally manifested as a well-circunscribed intradural mass with an indolent biological behavior. CASE PRESENTATION: We describe the case of a 48-year-old Mexican female who non-relevant past medical history, that developed a GCE of the filum terminale. Magnetic resonance imaging and computed tomography revealed the presence of an intra-axial tumor extending from L3 to L5 with extra-medullary invasion...
January 14, 2017: Diagnostic Pathology
https://www.readbyqxmd.com/read/28068329/the-primacy-of-nf1-loss-as-the-driver-of-tumorigenesis-in-neurofibromatosis-type-1-associated-plexiform-neurofibromas
#14
A Pemov, H Li, R Patidar, N F Hansen, S Sindiri, S W Hartley, J S Wei, A Elkahloun, S C Chandrasekharappa, J F Boland, S Bass, J C Mullikin, J Khan, B C Widemann, M R Wallace, D R Stewart
Neurofibromatosis type 1 (NF1) is a common tumor-predisposition disorder due to germline mutations in the tumor suppressor gene NF1. A virtually pathognomonic finding of NF1 is the plexiform neurofibroma (PN), a benign, likely congenital tumor that arises from bi-allelic inactivation of NF1. PN can undergo transformation to a malignant peripheral nerve sheath tumor, an aggressive soft-tissue sarcoma. To better understand the non-NF1 genetic contributions to PN pathogenesis, we performed whole-exome sequencing, RNASeq profiling and genome-wide copy-number determination for 23 low-passage Schwann cell cultures established from surgical PN material with matching germline DNA...
January 9, 2017: Oncogene
https://www.readbyqxmd.com/read/28067315/kank1-inhibits-cell-growth-by-inducing-apoptosis-though-regulating-cxxc5-in-human-malignant-peripheral-nerve-sheath-tumors
#15
Zhibin Cui, Yingjia Shen, Kenny H Chen, Suresh K Mittal, Jer-Yen Yang, GuangJun Zhang
Malignant peripheral nerve sheath tumors (MPNSTs) are a type of rare sarcomas with a poor prognosis due to its highly invasive nature and limited treatment options. Currently there is no targeted-cancer therapy for this type of malignancy. Thus, it is important to identify more cancer driver genes that may serve as targets of cancer therapy. Through comparative oncogenomics, we have found that KANK1 was a candidate tumor suppressor gene (TSG) for human MPNSTs. Although KANK1 is known as a cytoskeleton regulator, its tumorigenic function in MPNSTs remains largely unknown...
January 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28065690/medium-throughput-biochemical-compound-screening-identifies-novel-agents-for-pharmacotherapy-of-neurofibromatosis-type-i
#16
Galina Semenova, Dina Stepanova, Sergey M Deyev, Jonathan Chernoff
The variable manifestation of phenotypes that occur in patients with neurofibromatosis type 1 (NF1) includes benign and malignant neurocutaneous tumors for which no adequate treatment exists. Cell-based screening of known bioactive compounds library identified the protein phosphatase 2A (PP2A) inhibitor Cantharidin and the L-type calcium channel blocker Nifedipine as potential candidates for NF1 pharmacotherapy. Validation of screening results using human NF1-associated malignant peripheral nerve sheath tumor (MPNST) cells showed that Cantharidin effectively impeded MPNST cell growth, while Nifedipine treatment significantly decreased local tumor growth in an MPNST xenograft animal model...
January 5, 2017: Biochimie
https://www.readbyqxmd.com/read/28055968/bh3-mimetics-suppress-cxcl12-expression-in-human-malignant-peripheral-nerve-sheath-tumor-cells
#17
Christopher D Graham, Niroop Kaza, Hawley C Pruitt, Lauren M Gibson, Barbara J Klocke, Lalita A Shevde, Steven L Carroll, Kevin A Roth
Malignant peripheral nerve sheath tumors (MPNSTs) are aggressive, Schwann cell-derived neoplasms of the peripheral nervous system that have recently been shown to possess an autocrine CXCL12/CXCR4 signaling loop that promotes tumor cell proliferation and survival. Importantly, the CXCL12/CXCR4 signaling axis is driven by availability of the CXCL12 ligand rather than CXCR4 receptor levels alone. Therefore, pharmacological reduction of CXCL12 expression could be a potential chemotherapeutic target for patients with MPNSTs or other pathologies wherein the CXCL12/CXCR4 signaling axis is active...
January 31, 2017: Oncotarget
https://www.readbyqxmd.com/read/28052660/outcomes-of-treatment-for-malignant-peripheral-nerve-sheath-tumors-different-clinical-features-associated-with-neurofibromatosis-type-1
#18
In Kyung Hwang, Seung Min Hahn, Hyo Sun Kim, Sang Kyum Kim, Hyo Song Kim, Kyoo-Ho Shin, Chang Ok Suh, Chuhl Joo Lyu, Jung Woo Han
Purpose: Malignant peripheral nerve sheath tumors (MPNSTs) are a rare subtype of sarcoma that occur spontaneously or in association with neurofibromatosis type 1 (NF-1). This study aimed to clinically differentiate these types of MPNSTs. Materials and Methods: The study reviewed 95 patients diagnosed with and treated for MPNST at Yonsei University Health System, Seoul, Korea over a 27-year period. The clinical characteristics, prognostic factors, and treatment outcomes of sporadic (sMPNST) and NF-1 associated MPNST (NF-MPNST) cases were compared...
December 1, 2016: Cancer Research and Treatment: Official Journal of Korean Cancer Association
https://www.readbyqxmd.com/read/28019650/genomic-analysis-reveals-frequent-traf7-mutations-in-intraneural-perineuriomas
#19
Christopher J Klein, Yanhong Wu, Mark E Jentoft, Georges Mer, Robert J Spinner, P James B Dyck, Peter J Dyck, Michelle L Mauermann
Intraneural perineuriomas are benign peripheral nerve sheath tumors that cause progressive debilitating focal extremity weakness. The etiology of perineuriomas is largely unknown. We utilized whole exome sequencing, copy number algorithm evaluation, and high-resolution whole genome microarray to investigate for a genetic causal link to intraneural perineuriomas. Ten of 16 (60%) tumor cases had mutations in the WD40 domain of TRAF7, the same location for causal mutations of meningiomas. Two additional perineurioma cases had large chromosomal abnormalities in multiple chromosomes, including chromosome 22q...
December 26, 2016: Annals of Neurology
https://www.readbyqxmd.com/read/28002805/expression-of-psma-in-tumor-neovasculature-of-high-grade-sarcomas-including-synovial-sarcoma-rhabdomyosarcoma-undifferentiated-sarcoma-and-mpnst
#20
Birthe Heitkötter, Marcel Trautmann, Inga Grünewald, Martin Bögemann, Kambiz Rahbar, Heidrun Gevensleben, Eva Wardelmann, Wolfgang Hartmann, Konrad Steinestel, Sebastian Huss
AIMS: PSMA (prostate specific membrane antigen) is physiologically expressed in normal prostate tissue. It is overexpressed in prostate cancer cells and has been suggested as a target for antibody-based radioligand therapy. As PSMA expression so far has not been systematically analyzed in soft tissue tumors, the current study aims at investigating a large cohort of different subtypes. METHODS AND RESULTS: Immunohistochemistry was used to detect PSMA expression in 779 samples of soft tissue tumors and Ewing sarcoma as a primary bone malignancy...
December 16, 2016: Oncotarget
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