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Clinical Neuropathology

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https://www.readbyqxmd.com/read/29035192/bacillus-cereus-bacteremia-with-central-nervous-system-involvement-a-neuropathological-study
#1
Jean Philippe Brouland, Nathalie Sala, Selin Tusgul, Caterina Rebecchini, Enikö Kovari
Bacillus cereus is a widely-distributed, gram-positive or variable, rod-shaped bacterium frequently considered a contaminant in clinical specimens. It is recognized as a potential pathogen inducing self-limiting emetic or diarrheal food poisoning or localized infection in immunocompetent patients. True B. cereus bacteremia is uncommon and mainly observed in fragile patients, notably in immunocompromised individuals. We report clinical, radiological, and pathological findings of a 64-year-old patient with a history of acute myeloid leukemia who initially presented a fever while neutropenic after the induction of a second cycle of chemotherapy...
October 16, 2017: Clinical Neuropathology
https://www.readbyqxmd.com/read/29035191/idh-mutant-giant-cell-glioblastoma-a-neglected-tumor-variant
#2
Henning Leske, Petter Brandal, Elisabeth J Rushing, Pitt Niehusmann
No abstract text is available yet for this article.
October 16, 2017: Clinical Neuropathology
https://www.readbyqxmd.com/read/29035190/brain-tumor-epidemiology-in-the-era-of-precision-medicine-the-2017-brain-tumor-epidemiology-consortium-meeting-report
#3
Kimberly J Johnson, Judith Schwartzbaum, Carol Kruchko, Michael E Scheurer, Ching C Lau, Adelheid Woehrer, Johannes A Hainfellner, Joseph Wiemels
The Brain Tumor Epidemiology Consortium (BTEC) is an international consortium that aims to advance the development of multicenter and interdisciplinary collaborations that focus on research related to the etiology, outcomes, and prevention of brain tumors. The 18th annual BTEC meeting was held in Banff, AB, Canada, on June 27 - 29, 2017. The meeting focused on the intersection between epidemiology and precision medicine, that is, the use of molecular indicators of risk, early disease and prognosis or precision epidemiology...
October 16, 2017: Clinical Neuropathology
https://www.readbyqxmd.com/read/28992848/the-first-report-of-human-primary-thoracic-spine-mast-cell-sarcoma-a-case-report
#4
Ali C Ravanpay, Jonathan R Fromm, Kerstin L Edlefsen, Paul Martin, Randal Chesnut
In this report, we present a 53-year-old woman with primary mast cell sarcoma of the thoracic spine vertebrae. Mast cell sarcoma is an aggressive and rare cancer. To date, no cases of primary mast cell sarcoma have been reported in the spinal vertebrae. The patient initially presented with a 1-month history of pelvic and abdominal pain. Inconclusive gynecological evaluation resulted in a CT of the abdomen and pelvis, demonstrating a destructive lesion centered at the 11th thoracic vertebral body. The patient underwent a two-stage spine operation for T11 corpectomy and T7-L3 posterior spinal fusion...
October 10, 2017: Clinical Neuropathology
https://www.readbyqxmd.com/read/28899479/olfactory-ensheathing-cell-tumor-a-case-presentation
#5
Michael H Schild, William T Harrison, Thomas J Cummings
No abstract text is available yet for this article.
September 7, 2017: Clinical Neuropathology
https://www.readbyqxmd.com/read/28899478/clinically-diagnosed-susac-syndrome-in-a-50-year-old
#6
Francesca M Brett, Seamus Looby, Conor Fearon, Peter Widdess-Walsh
No abstract text is available yet for this article.
September 7, 2017: Clinical Neuropathology
https://www.readbyqxmd.com/read/28853696/amelanotic-melanocytoma-of-the-sella-mimicking-pituitary-adenoma
#7
Boleslaw Lach, Kesava Reddy, Doron D Sommer, Anthony C Whitton, Reena Baweja
We describe a 50-year-old man with a well-demarcated intra- and extrasellar lesion and clinical signs of a non-functioning pituitary adenoma. Neuropathological examination revealed tumor composed of non-pigmented spindle cells arranged in tightly packed nests separated by delicate vascular septae. There was no significant cellular atypia or mitotic activity, and Ki67-positive nuclei were present in less than 1% of cells. The neoplastic cells were positive for S-100 and vimentin, and negative for numerous cellular markers including HMB45, anti-melanoma cocktail antibodies, and Masson melanin stain...
August 30, 2017: Clinical Neuropathology
https://www.readbyqxmd.com/read/28853695/paradoxical-results-obtained-with-ki67-labeling-and-phh3-mitosis-index-in-glial-tumors-a-literature-analysis
#8
İlhan Elmaci, Meric A Altinoz, Fatih Han Bolukbasi, Ozlem Yapicier, Aydin Sav
Precise tiered tumor grading is essential for predicting prognosis, selecting different treatment options and for follow-up of brain tumor patients. Ki67 labeling index (LI) is widely employed in assessing aggressiveness of glial brain tumors. However, Ki67 is subject to interlaboratory variability, and its antigen is expressed on all cell cycle phases except G0, which hinders its usage as a precise criterion for assessing cell proliferation. Indeed, there exist peculiar observations pertinent to increases of Ki67 index in glial tumors following radiotherapy or treatment with tyrosine kinase inhibitors...
August 30, 2017: Clinical Neuropathology
https://www.readbyqxmd.com/read/29065975/clinical-neuropathology-6-2017
#9
Johannes A Hainfellner
No abstract text is available yet for this article.
November 2017: Clinical Neuropathology
https://www.readbyqxmd.com/read/28933335/re-evaluating-ttf-1-immunohistochemistry-in-diffuse-gliomas-expression-is-clone-dependent-and-associated-with-tumor-location
#10
Drew Pratt, Nina Afsar, Michael Allgauer, Patricia Fetsch, Maryknoll Palisoc, Stefania Pittaluga, Martha Quezado
TTF-1 is widely used as a marker in routine surgical pathology in the work-up of malignancy. Aberrant expression of TTF-1 in extrapulmonary and extrathyroidal malignancies is a frequently reported phenomenon. In addition to the recently characterized pituicyte-derived tumors of the sella, immunoreactivity has been reported in diffuse gliomas with the SPT24 clone. Here, we sought to evaluate TTF-1 expression with three commercially available clones in a large series of gliomas. Expression was compared across the newly defined diagnostic entities in the 2016 WHO Classification of CNS Tumors...
November 2017: Clinical Neuropathology
https://www.readbyqxmd.com/read/28816112/toxoplasmosis-of-the-pituitary-gland
#11
Nicholas F Prayson, Richard A Prayson
No abstract text is available yet for this article.
September 2017: Clinical Neuropathology
https://www.readbyqxmd.com/read/28737124/distribution-and-expression-of-brain-derived-neurotrophic-factor-nerve-growth-factor-and-neurotrophic-factor-3-in-refractory-epilepsy-associated-focal-cortical-dysplasia
#12
Feng Wang, Yuanxiang Lin, Dezhi Kang, Fuxiang Chen, Kun Lin, Xingfen Su
OBJECTIVE: To investigate the expression and distribution of brain-derived neurotrophic factor (BDNF), nerve growth factor (NGF), and neurotrophic factor-3 (NT-3) in refractory epilepsy-associated type I focal cortical dysplasia (FCD I) and FCD IIA patients, and to explore their effects on pathogenesis of FCD I and FCD IIA. MATERIALS AND METHODS: 19 subjects who received surgery at the Department of Neurosurgery, First Affiliated Hospital, Fujian Medical University, China between June 2010 and May 2012, were enrolled in this study...
September 2017: Clinical Neuropathology
https://www.readbyqxmd.com/read/28699883/familial-melanoma-astrocytoma-syndrome-synchronous-diffuse-astrocytoma-and-pleomorphic-xanthoastrocytoma-in-a-patient-with-germline-cdkn2a-b-deletion-and-a-significant-family-history
#13
Andrew K Chan, Seunggu J Han, Winward Choy, Daniah Beleford, Manish K Aghi, Mitchel S Berger, Joseph T Shieh, Andrew W Bollen, Arie Perry, Joanna J Phillips, Nicholas Butowski, David A Solomon
Familial melanoma-astrocytoma syndrome is a tumor predisposition syndrome caused by inactivating germline alteration of the <italic>CDKN2A</italic> tumor suppressor gene on chromosome 9p21. While some families with germline <italic>CDKN2A</italic> mutations are prone to development of just melanomas, other families develop both melanomas, astrocytomas, and occasionally other nervous-system neoplasms including peripheral nerve sheath tumors and meningiomas. The histologic spectrum of the astrocytomas that arise as part of this syndrome is not well described, nor are the additional genetic alterations that drive these astrocytomas apart from the germline <italic>CDKN2A</italic> inactivation...
September 2017: Clinical Neuropathology
https://www.readbyqxmd.com/read/28766496/mixed-hemangioblastoma-and-ependymoma-collision-tumor-of-the-cerebellum
#14
Michael H Schild, Elizabeth P Doane, Allan H Friedman, Thomas J Cummings
No abstract text is available yet for this article.
August 2, 2017: Clinical Neuropathology
https://www.readbyqxmd.com/read/28655380/clinical-neuropathology-image-4-2017-high-resolution-7-tesla-mri-of-postmortem-brain-specimens-improving-neuroimaging-neuropathology-correlations
#15
Mar Guasp-Verdaguer, Oriol Grau-Rivera, Alberto Prats-Galino, Núria Bargalló, Raquel Sánchez-Valle, Ellen Gelpi, Guadalupe Soria
No abstract text is available yet for this article.
July 2017: Clinical Neuropathology
https://www.readbyqxmd.com/read/28332470/adult-onset-demyelinating-neuropathy-associated-with-fbln5-gene-mutation
#16
Si Cheng, He Lv, Wei Zhang, Zhaoxia Wang, Xin Shi, Wei Liang, Yun Yuan
Rare forms of autosomal-dominant Charcot-Marie-Tooth disease (AD-CMT) may be associated with mutations in Fibulin-5 (FBLN5) as AD-CMT is genetically heterogeneous. Here, we report the first pathological study of an Asian family. The proband was a 46-year-old man with slowly progressive distal numbness and weakness for 12 years. He had a history of diabetes mellitus for 12 years. His mother was 81 years old and had mild polyneuropathy. His 16-year-old daughter was asymptomatic. The nerve conduction velocities (NCVs) and compound muscular action potential (CMAP) amplitudes were moderately to severely reduced in the proband, and moderately reduced in his daughter and mother...
July 2017: Clinical Neuropathology
https://www.readbyqxmd.com/read/28502321/cytomegalovirus-in-the-human-dentate-gyrus-and-its-impact-on-neural-progenitor-cells-report-of-two-cases
#17
Ju-Yoon Yoon, Brett Danielson, Derek Mathis, Jason Karamchandani, David G Munoz
Congenital cytomegalovirus (CMV) infection in the 2nd and 3rd trimester results in catastrophic CNS abnormalities. This susceptibility is thought to result from the high proportion of neural stem cells in the developing brain. In immunocompromised adults, CNS infection by CMV preferentially affects ependymal surfaces, from where it expands to involve the parenchyma. Experimental models of murine CMV infection demonstrate viral tropism for the dentate gyrus (DG) and subventricular zone, the areas in which adult neurogenesis occurs...
May 15, 2017: Clinical Neuropathology
https://www.readbyqxmd.com/read/28502320/atypical-teratoid-rhabdoid-tumor-arising-in-a-pleomorphic-xanthoastrocytoma-a-rare-entity
#18
Meral Uner, Arzu Saglam, Bilge Can Meydan, Kerim Aslan, Figen Soylemezoglu
Atypical teratoid rhabdoid tumor (AT/RT) is a rare and aggressive tumor usually occurring at younger ages. Pleomorphic xanthoastrocytomas (PXA) on the other hand are quiescent tumors with benign behavior. AT/RTs arising in the setting of PXA are exceptional. We present the case of a 23-year-old female patient, the fourth in the literature, speculated as having AT/RT arising within a PXA, as demonstrated by the presence of INI1 mutation. The patient presented with a short history of headache, which increased over time, and emerging seizures...
May 15, 2017: Clinical Neuropathology
https://www.readbyqxmd.com/read/28502319/an-unusual-case-of-a-young-patient-with-whipple-s-disease-involving-the-central-nervous-system
#19
Margaret E Flanagan, Nicole Andeen, Joshua Lieberman, Joseph Freeburg, John R Williams, Daniel R Hoogestraat, Andrew Bryan, Daniel E Sabath
No abstract text is available yet for this article.
May 15, 2017: Clinical Neuropathology
https://www.readbyqxmd.com/read/28436370/clinical-neuropathology-image-3-2017-cns-involvement-in-systemic-amyloidosis-restricted-to-the-choroid-plexus
#20
Ellen Gelpi, Martin Susani, Robert Wiebringhaus, Andreas Aschauer, Andreas Kammerlander, Mirjam I Lutz, Johannes A Hainfellner
No abstract text is available yet for this article.
May 2017: Clinical Neuropathology
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