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Peripheral nerve sheath tumor

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https://www.readbyqxmd.com/read/28340171/immunohistochemical-approach-to-the-differential-diagnosis-of-meningiomas-and-their-mimics
#1
Camille Boulagnon-Rombi, Clémence Fleury, Caroline Fichel, Sophie Lefour, Aude Marchal Bressenot, Guillaume Gauchotte
The differential diagnosis between meningioma and others tumors can be challenging. This study aimed to evaluate different immunohistochemical markers for the differential diagnosis between meningioma and their morphological mimics. Immunohistochemistry was performed on tissue microarray with antiepithelial membrane antigen (EMA), progesterone receptor, somatostatin receptor 2A (SSTR2A), CD34, STAT6, S100, SOX10, HMB45, MelanA, GFAP, inhibin, and BCL2 antibodies. One hundred and twenty-seven meningiomas, 26 solitary fibrous tumor/hemangiopericytomas (SFT/HPC), 39 schwannomas, 17 hemangioblastomas, 21 melanomas, 9 gliosarcomas, 5 neurofibromas, 9 peripheral primitive neuroectodermal tumors, 7 synovial sarcomas, and 5 malignant peripheral nerve sheath tumors were included in the microarray...
March 14, 2017: Journal of Neuropathology and Experimental Neurology
https://www.readbyqxmd.com/read/28335699/approaches-to-paraspinal-tumours-a-technical-note
#2
Arjun Dhar, Sumeet Pawar, Apurva Prasad, P S Ramani
Neurogenic tumours of the paraspinal space can occur in all age groups. It is common in adult population and relatively rare in elderly group. Usually they are benign, but in children, arising from the autonomic system, tends to be malignant in nature. Usually in adults, they arise from peripheral nerve sheath and are labelled as schwannomas. For a given tumour, determination of a correct surgical approach is mandatory to achieve a successful surgical outcome. Several factors like tumour size, histology, involvement of the bony spinal canal, etc...
March 23, 2017: Neurological Research
https://www.readbyqxmd.com/read/28320420/malignant-gastrointestinal-neuroectodermal-tumor-a-case-report-and-review-of-the-literature
#3
Mohammed J Alyousef, Jumana A Alratroot, Tarek ElSharkawy, Mohamed A Shawarby, Mohammad A Al Hamad, Tarek M Hashem, Ahmed Alsayyah
BACKGROUND: Malignant gastrointestinal neuroectodermal tumor (GNET) is an extremely rare entity that was first described by Zambrano et al. in 2003 as "Clear cell sarcoma-like tumor of the gastrointestinal tract". It shares some of the histological features of clear cell sarcoma (CCS) but lacks the immunohistochemical reactivity for melanocytic markers. We report a case of GNET that was initially misdiagnosed as gastrointestinal stromal tumor (GIST). Recognizing this entity is important to avoid misdiagnosis...
March 20, 2017: Diagnostic Pathology
https://www.readbyqxmd.com/read/28286620/a-case-of-schwannoma-of-the-common-peroneal-nerve-in-the-knee
#4
Tayyar Taylan Öz, Birol Aktaş, Korhan Özkan, Burak Özturan, Bulent Kilic, Murat Demiroğlu
Schwannomas are benign neurogenic tumors of peripheral nerves that originate from neural sheath. The aim of this case report is to bring to mind the schwannoma in the patient with knee pain. A 39-year-old woman presented with a complaint of knee pain of three months history. After surgical intervention, the patient's complaints completely disappeared in the post-operative period. This should come to mind in the differential diagnosis of knee pain.
February 20, 2017: Orthopedic Reviews
https://www.readbyqxmd.com/read/28258916/malignant-peripheral-nerve-sheath-tumor-of-the-tongue-with-an-unusual-pattern-of-recurrence
#5
Soumyajit Roy, Ajeet Kumar Gandhi, Bharti Devnani, Lavleen Singh, Bidhu Kalyan Mohanti
Malignant peripheral nerve sheath tumor (MPNST) of oral cavity is an extremely uncommon malignancy. Less than 15 cases have been reported since 1973 though none of them describes a distant metastasis. We present a rare case of MPNST of the tongue who presented with features of hypoglossal nerve palsy. Incisional biopsy showed a malignant spindle cell tumor in the sub-epithelial connective tissue. The tumor cells were immune-positive for S-100. He underwent surgery followed by adjuvant chemo-radiation. Later the disease recurred in the form of isolated pelvic bone metastasis...
February 28, 2017: Journal of the Egyptian National Cancer Institute
https://www.readbyqxmd.com/read/28255944/fatty-rind-of-intramuscular-soft-tissue-tumors-of-the-extremity-is-it-different-from-the-split-fat-sign
#6
Jinkyeong Sung, Jee-Young Kim
OBJECTIVE: To analyze intramuscular soft-tissue tumors with fatty rind, and to evaluate the difference between fatty rind and split fat sign on magnetic resonance imaging (MRI). MATERIALS AND METHODS: We retrospectively analyzed 50 pathologically confirmed intramuscular masses on MRI. We evaluated the distribution and shape of fatty rind and muscle atrophy. RESULTS: Fatty rind was found more frequently in benign lesions (80% [36 out of 45]) compared with malignant lesions (25% [1 out of 5]; P = 0...
March 2, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/28248118/-update-on-the-2016-who-classification-of-tumors-of-the-central-nervous-system-part-2-embryonal-tumors-and-other-tumor-groups-except-for-diffuse-gliomas
#7
Josef Zámečník, Boris Rychlý, Marian Švajdler
The 2016 revision of the WHO classification of tumors of the central nervous system is a conceptual advance over the 2007 classification system. Similarly to the group of diffuse gliomas, a significant shift in the understanding of the molecular background and tumor biology has recently occurred also in the category of embryonal CNS tumors, especially in medulloblastomas. The classification now incorporates new entities that are defined by both histology and molecular features. Updates in the group of gliomas (except for diffuse gliomas), in the meningeal tumors as well as in the tumors of peripheral nerve sheaths will also be discussed...
2017: Ceskoslovenská Patologie
https://www.readbyqxmd.com/read/28237565/peripheral-nerve-schwannoma-a-review-of-varying-clinical-presentations-and-imaging-findings
#8
Pradeep Albert, Jalpen Patel, Karim Badawy, William Weissinger, Marc Brenner, Ian Bourhill, John Parnell
A schwannoma or neurilemmoma is a benign, isolated, noninvasive, and encapsulated tumor originating from Schwann cells of the peripheral nerve sheath. The incidence of a schwannoma occurring in the foot and ankle is rare, with prevalence rate of 1% to 10%. Schwannomas have no sex predilection, and they commonly occur in patients in their fourth decade. Malignant transformation of benign schwannoma is unusual; however, it is important to note that malignant variants of schwannomas do exist and account for about 5% to 10% of all soft tissue sarcomas...
February 22, 2017: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/28235631/clinicopathologic-features-of-peripheral-nerve-sheath-tumors-involving-the-eye-and-ocular-adnexa
#9
Mingjuan L Zhang, Maria J Suarez, Thomas M Bosley, Fausto J Rodriguez
Peripheral nerve sheath tumors (PNSTs) are known to occur in the orbit and comprise 4% of all orbital tumors, but have not been well-studied in contemporary literature. Ninety specimens involving the eye and ocular adnexa (1979-2015) from 67 patients were studied. The mean age was 32.5years. Locations included orbit (58.9%), eyelid (60.0%) and other ocular adnexa. A large majority of specimens were neurofibromas (70.0%), followed by schwannomas (11.1%), neuromas (11.1%), granular cell tumors (n=4), nerve sheath myxomas (n=2), and malignant peripheral nerve sheath tumor (n=1)...
February 21, 2017: Human Pathology
https://www.readbyqxmd.com/read/28228086/clinical-trials-with-oncolytic-measles-virus-current-status-and-future-prospects
#10
Pavlos Msaouel, Mateusz Opyrchal, Angela Dispenzieri, Kah Whye Peng, Mark J Federspiel, Stephen J Russell, Evanthia Galanis
Attenuated Edmonston lineage measles virus (MV-Edm) vaccine strains can preferentially infect and lyse a wide variety of cancer cells. Oncolytic MV-Edm derivatives genetically engineered to expressed the human carcinoembryonic antigen (MV-CEA virus) or the human sodium iodide symporter (MV-NIS virus) and are currently being tested in clinical trials against ovarian cancer, glioblastoma multiforme, multiple myeloma, mesothelioma, head and neck cancer, breast cancer and malignant peripheral nerve sheath tumors...
February 22, 2017: Current Cancer Drug Targets
https://www.readbyqxmd.com/read/28212127/surgical-management-of-mandibular-intraosseous-schwannomas
#11
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
#12
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
#13
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
#14
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
#15
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
#16
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
#17
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
#18
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
#19
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 cooperative 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...
May 2017: Genes, Chromosomes & Cancer
https://www.readbyqxmd.com/read/28105622/-association-of-peripheral-nerve-invasion-with-clinicopathological-factors-and-prognosis-of-colorectal-cancer
#20
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
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