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Posterior fossa tumors

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https://www.readbyqxmd.com/read/29346182/atypical-teratoid-rhabdoid-tumor-of-the-cauda-equina-in-a-child-report-of-a-very-unusual-case
#1
James M Shiflett, Betty L Herrington, David A Joyner, Ali G Saad
Atypical teratoid/rhabdoid tumors (AT/RT) are highly aggressive malignant primitive neoplasms that commonly occur in children younger than 2 years of age. The prognosis is generally dismal with a median survival time of <1 year. The majority of AT/RT occur in the posterior fossa and less frequently the supratentorium. Primary pediatric spinal AT/RT are exceedingly rare and only 15 cases have been reported to date. Here we report a very unusual case of primary spinal AT/RT extensively involving the spinal cord from T11 down to the cauda equina...
January 16, 2018: Applied Immunohistochemistry & Molecular Morphology: AIMM
https://www.readbyqxmd.com/read/29338911/-rosette-forming-glioneuronal-tumor-of-the-fourth-ventricle-two-cases-report-and-literature-review
#2
Bernardino Choque Cuba, José Manuel Ortega Zufiría, Pedro Domingo Poveda Núñez, Noemí Lomillos Prieto, Mario Sierra Rodríguez, Martin Tamarit Degenhardt, Remedios López Serrano, Juan Carlos Gómez Angulo Giner, José Antonio Aramburu González
Rosette-forming glioneuronal tumor of the fourth ventricle is a primary central nervous system tumor introduced in the group of glioneuronal tumors in the WHO classification of 2007. Initially it was described around the fourth ventricle, but recently have been published cases in different locations. We present 2cases of this rare tumor, both surgically treated. The first in a 41 year old man with typical symptoms of posterior fossa injury. The second in an 18 year old woman, with incidental finding of posterior fossa injury that was also surgically treated...
January 12, 2018: Neurocirugía
https://www.readbyqxmd.com/read/29325939/liponeurocytoma-of-the-cerebello-pontine-angle
#3
Carmela Chiaramonte, Sylvain Rabaste, Timothee Jacquesson, David Meyronet, François Cotton, Emmanuel Jouanneau, Moncef Berhouma
Liponeurocytoma is a very rare tumor classified as grade II (neuronal and mixed neuronal-glial tumors) according to 2016 WHO classification of Tumors of the Central Nervous System. The median age is 50-years-old and the most frequent location is the posterior cranial fossa especially within the cerebellar hemispheres; those arising in the cerebellopontine angle are exceptional. We herein report the clinical, radiological and pathological characteristics of a cerebellopontine angle liponeurocytoma in a 35-year-old woman...
January 8, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29303453/stereotactic-radiosurgery-for-who-grade-i-posterior-fossa-meningiomas-long-term-outcomes-with-volumetric-evaluation
#4
Mohana Rao Patibandla, Cheng-Chia Lee, Athreya Tata, Gokul Chowdary Addagada, Jason P Sheehan
OBJECTIVE Research over the past 2 decades has been characterizing the role of stereotactic radiosurgery (SRS) in the treatment of benign intracranial tumors, including meningiomas. However, few studies have examined the long-term outcomes of SRS treatment for posterior fossa meningiomas (PFMs). Furthermore, previous studies have typically used single diameter measurements when reporting outcomes, which can yield misleading results. The authors describe the use of SRS in the treatment of benign WHO grade I PFMs and correlate volumetric analysis with long-term outcomes...
January 5, 2018: Journal of Neurosurgery
https://www.readbyqxmd.com/read/29299088/sporadic-hemangioblastoma-arising-from-the-infundibulum
#5
Michael N Pakdaman, Matthew J Austin, Serguei Bannykh, Barry D Pressman
Hemangioblastomas are rare vascular tumors most often found in the posterior fossa and cervical spinal cord and commonly associated with von Hippel-Lindau Disease. We report a case of sporadic hemangioblastoma in a patient without von Hippel-Lindau Disease. Imaging characteristics included a solid, suprasellar mass that was homogeneously enhancing. These findings most resembled a pituicytoma or choroid glioma because of the close association with the infundibulum and the homogeneous avid enhancement. Microscopically, the neoplasm was seen to be composed of vascular channels associated with foamy stromal cells, containing clear cytoplasmic vacuoles...
May 2017: Journal of Radiology Case Reports
https://www.readbyqxmd.com/read/29279964/hypertrophic-olivary-degeneration-in-children-after-posterior-fossa-surgery-an-underdiagnosed-condition
#6
Matheus Fernando Manzolli Ballestero, Dinark Conceição Viana, Thiago Lyrio Teixeira, Marcelo Volpon Santos, Ricardo Santos de Oliveira
BACKGROUND: Hypertrophic olivary degeneration (HOD) is a rare transsynaptic form of degeneration occurring after injury to the dentato-rubro-olivary pathway ("Guillain-Mollaret triangle"). The majority of studies have described HOD resulting from posterior fossa (PF) hemorrhage or infarction. HOD in patients undergoing PF surgery has not been well characterized. These lesions are rare and symptomatic children with HOD are even more uncommon. The purpose of this study was to evaluate HOD that develops after PF operations in children...
December 26, 2017: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/29250697/two-girl-patients-with-medulloblastoma-case-reports
#7
Laura Daniela Marinău, Cristina Elena Singer, Cristian Meşină, Elena Carmen Niculescu, Ileana Puiu, Ileana Octavia Petrescu, Cristiana Geormăneanu, Augustina Cornelia Enculescu, Daniela Elise Tache, Ştefana Oana Purcaru, Simona Răciulă, Cosmina Lucia Damian
In childhood, the most common type of brain tumors is medulloblastoma, a highly malignant primary brain tumor that is found in the cerebellum or posterior fossa. The tumor mass increases and generates obstructive hydrocephalus. Risk factors (that might be involved in some cases) include the genetic syndrome such as type 1 neurofibromatosis, exposure to ionizing radiation and Epstein-Barr virus. Medulloblastoma is associated with recessively inherited Turcot disease and with conditions as ataxia-telangiectasia syndrome in several cases...
2017: Romanian Journal of Morphology and Embryology, Revue Roumaine de Morphologie et Embryologie
https://www.readbyqxmd.com/read/29241270/endoscopic-third-ventriculostomy-before-posterior-fossa-tumor-surgery-in-adult-patients
#8
Sascha Marx, Ahmed El Damaty, Jotham Manwaring, Ehab El Refaee, Steffen Fleck, Michael Fritsch, Michael R Gaab, H W S Schroeder, Jörg Baldauf
No abstract text is available yet for this article.
December 14, 2017: Journal of Neurological Surgery. Part A, Central European Neurosurgery
https://www.readbyqxmd.com/read/29239262/outcomes-following-proton-therapy-for-pediatric-ependymoma
#9
Daniel J Indelicato, Julie A Bradley, Ronny L Rotondo, Ronica H Nanda, Natalie Logie, Eric S Sandler, Philipp R Aldana, Nathan J Ranalli, Alexandra D Beier, Christopher G Morris, Nancy P Mendenhall
BACKGROUND: Proton therapy can reduce the low and intermediate radiation dose to uninvolved brain tissue in children with intracranial ependymomas, which may improve functional outcomes and reduce second malignancies in survivors. Accordingly, ependymoma has become the most common pediatric tumor treated with proton therapy, yet data on efficacy and toxicity are limited. MATERIAL AND METHODS: Between June 2007 and February 2017, 179 children (≤21 years old) with nonmetastatic grade II/III intracranial ependymoma received proton therapy at our institution...
December 14, 2017: Acta Oncologica
https://www.readbyqxmd.com/read/29229339/hemangioblastomas-of-the-posterior-cranial-fossa-in-adults-demographics-clinical-morphological-pathological-surgical-features-and-outcomes-a-systematic-review
#10
Marin Kuharic, Dragan Jankovic, Bruno Splavski, Frederick A Boop, Kenan I Arnautovic
BACKGROUND: Posterior cranial fossa (PCF) hemangioblastomas are benign, highly vascularized, and well-differentiated tumors with well-described histopathologic features. Although relatively rare, this tumor is the most prevalent primary tumor of the cerebellum in adults. OBJECTIVE: Since the demographics of patients with such a tumor-as well as the clinical, morphological, pathological, surgical features, and outcomes-are not fully understood, we systematized characteristic patient and tumor features...
December 8, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/29204199/clinicopathological-study-of-pediatric-posterior-fossa-tumors
#11
Kadali Satya Vara Prasad, D Ravi, Vijay Pallikonda, Bhavana Venkata Satya Raman
Context: Brain tumor is one of the most devastating forms of human illness, especially when occurring in the posterior fossa and involving the brainstem. Tumors in the posterior fossa are considered some of the most critical brain lesions. This is primarily due to the limited space within the posterior fossa, as well as the potential involvement of the vital brainstem nuclei. Aims: The aim of this study is to analyze the incidence, clinical features, surgical outcome, complications, and prognosis in a series of 37 pediatric patients with posterior fossa tumors who underwent surgery between September 2012 and January 2015 from the Department of Neurosurgery, King George Hospital, Visakhapatnam (both prospective and retrospective study)...
July 2017: Journal of Pediatric Neurosciences
https://www.readbyqxmd.com/read/29200961/posterior-cerebral-fossa-medulloepithelioma-report-of-a-case
#12
Nezha Oumghar, Fatima Ezzahra Hazmiri, Abdelhamid El Omrani, Hanane Rais, Mouna Khouchani
Background: Medulloepithelioma is a rare primitive neuroectodermal tumor of the central nervous system, usually developing in childhood. Due to its rarity, the optimal management is still unknown. The prognosis is poor, especially when resection is incomplete. Adjuvant radiochemotherapy is often indicated. Case presentation: We report a rare case of infratentorial medulloepithelioma in a 3 year old girl. She presented symptoms of increased intracranial pressure...
2017: BMC Clinical Pathology
https://www.readbyqxmd.com/read/29194500/eano-guidelines-for-the-diagnosis-and-treatment-of-ependymal-tumors
#13
Roberta Rudà, Guido Reifenberger, Didier Frappaz, Stefan M Pfister, Anne Laprie, Thomas Santarius, Patrick Roth, Joerg Christian Tonn, Riccardo Soffietti, Michael Weller, Elizabeth Cohen-Jonathan Moyal
Ependymal tumors are rare CNS tumors and may occur at any age, but their proportion among primary brain tumors is highest in children and young adults. Thus, the level of evidence of diagnostic and therapeutic interventions is higher in the pediatric compared with the adult patient population.The diagnosis and disease staging is performed by craniospinal MRI. Tumor classification is achieved by histological and molecular diagnostic assessment of tissue specimens according to the World Health Organization (WHO) classification 2016...
November 29, 2017: Neuro-oncology
https://www.readbyqxmd.com/read/29191541/subtemporal-interdural-surgical-approach-for-giant-facial-nerve-neurinomas
#14
Atul Goel, Shashi Ranjan, Abhidha Shah, Survendra Rai, Sandeep Gore, Pralhad Dharurkar
OBJECTIVE: The management issues of 15 cases of giant and dumbbell shaped facial neurinomas that extended both in the middle and in the posterior cranial fossa is reported. MATERIAL AND METHODS: During the period 2002 to June 2017, 15 cases of giant and dumbbell shaped facial neurinomas were surgically treated. There were 10 males and 5 females and their ages ranged from 17 to 59 years (average 34.2 years). Average duration of facial nerve weakness prior to seeking surgical relief was 49...
November 27, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/29191538/collet-sicard-syndrome-attributable-to-extramedullary-plasmacytoma-of-the-jugular-foramen
#15
Soliman Oushy, Christopher S Graffeo, Avital Perry, Jonathan M Morris, Matthew L Carlson, Jamie J Van Gompel
BACKGROUND: Collet-Sicard syndrome is a rare manifestation of skull base disease involving the jugular and hypoglossal foramina. We report the first case of Collet-Sicard attributable to extramedullary plasmacytoma-multiple myeloma (EP-MM), as well as the second case of EP-MM precipitating a jugular foramen syndrome (JFS)-spectrum disorder. CASE DESCRIPTION: A fifty-nine-year-old woman presented with 4-months of left aural fullness and pulsatile tenderness, positional vertigo, hoarseness, and dysphagia...
November 27, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/29188212/supratentorial-pilocytic-astrocytoma-mimicking-convexity-meningioma-with-early-anaplastic-transformation-a-case-report
#16
Jung Hwan Lee, Soon Ki Sung, Chang Hwa Choi
Meningiomas and pilocytic astrocytomas are benign intracranial tumors. Pilocytic astrocytomas arises frequently at the posterior fossa in childhood. Meningiomas have several image findings, such as a dural tail sign, bony erosion, and sunburst appearance on angiography. However, pilocytic astrocytomas with these findings have been rarely reported. In this report, we describe a mass with typical image findings of a meningioma, but diagnosed as a supratentorial pilocytic astrocytoma with early anaplastic transformation...
October 2017: Brain Tumor Research and Treatment
https://www.readbyqxmd.com/read/29184715/unusual-case-of-hemangioblastoma-of-the-cerebellopontine-angle
#17
A R Persad, Y H Khormi, F van Landeghem, M M Chow
Background: Hemangioblastomas are the most common primary tumor of the posterior fossa. There are few cases of hemangioblastoma of the cerebellopontine angle (CPA). When present in this location, hemangioblastoma presents a diagnostic challenge as its imaging findings closely resemble those of vestibular schwannoma (VS), which is much more common in the CPA. Case Description: We report the case of a 42-year-old man presenting with vertigo and diplopia found to have a CPA tumor with imaging resembling VS...
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/29180935/atypical-bilateral-cerebellopontine-angle-medulloblastoma-differential-diagnosis-immunohistochemical-features-and-radiological-presentation
#18
Kelvin M Piña Batista, Sayoa Alvarez de Eulate-Beramendi, María Rico, Victor Rodrigo, Yordy E Batista Batista, Kenia Y Alvarez Reyes
Medulloblastoma (MB) is a highly aggressive soft tissue neoplasm, classified as a primitive neuroectodermal tumor. It is the most common posterior fossa tumor in children, but occurs rarely in adults. MB accounts for approximately 20% of all primary central nervous system (CNS) tumors of childhood, while its incidence is around 1% of adult brain tumors. Most often it occurs in the cerebellum. We report a case of multicentric MB involving the bilateral cerebellopontine angle (CPA) and right cerebellar hemisphere...
2017: Contemporary Oncology Współczesna Onkologia
https://www.readbyqxmd.com/read/29173061/targeted-sequencing-of-malignant-supratentorial-pediatric-brain-tumors-demonstrates-a-high-frequency-of-clinically-relevant-mutations
#19
Bonnie L Cole, Colin C Pritchard, Maia Anderson, Sarah Es Leary
Pediatric brain tumors cause more deaths than any other childhood malignancy, and the identification of potentially actionable genomic alterations in this rare heterogeneous group of tumors may improve treatment and outcome. The genetic landscape of common posterior fossa tumors has been described in the past several years, yet the classification of malignant pediatric supratentorial tumors remains controversial. Next-generation sequencing is a promising tool to evaluate multiple genes concurrently. The clinical utility of next-generation sequencing has not been proven in pediatric brain tumors...
January 1, 2017: Pediatric and Developmental Pathology
https://www.readbyqxmd.com/read/29170836/phase-contrast-cerebrospinal-fluid-flow-magnetic-resonance-imaging-in-qualitative-evaluation-of-patency-of-csf-flow-pathways-prior-to-infusion-of-chemotherapeutic-and-other-agents-into-the-fourth-ventricle
#20
Rajan P Patel, Clark W Sitton, Leena M Ketonen, Ping Hou, Jason M Johnson, Seferino Romo, Stephen Fletcher, Manish N Shah, Marcia Kerr, Wafik Zaky, Michael E Rytting, Soumen Khatua, David I Sandberg
PURPOSE: Nuclear medicine studies have previously been utilized to assess for blockage of cerebrospinal fluid (CSF) flow prior to intraventricular chemotherapy infusions. To assess CSF flow without nuclear medicine studies, we obtained cine phase-contrast MRI sequences that assess CSF flow from the fourth ventricle down to the sacrum. METHODS: In three clinical trials, 18 patients with recurrent malignant posterior fossa tumors underwent implantation of a ventricular access device (VAD) into the fourth ventricle, either with or without simultaneous tumor resection...
November 23, 2017: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
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