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piloid gliosis

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https://www.readbyqxmd.com/read/27764513/heterogeneity-of-histopathological-presentation-of-pilocytic-astrocytoma-diagnostic-pitfalls-a-review
#1
E Matyja, W Grajkowska, K Stępień, E Naganska
Pilocytic astrocytomas (PAs) are the most frequent primary astroglial tumours affecting children and adolescents. They occur sporadically or in association with a genetically determined syndrome - neurofibromatosis type 1. Classic PA usually manifests as a well-circumscribed, often cystic, slowly growing tumour, which corresponds to WHO grade I. The majority of pilocytic tumours arise along the neuraxis, predominantly in the cerebellum. They are associated with favourable long-term outcome or spontaneous regression, even after incomplete resection...
2016: Folia Neuropathologica
https://www.readbyqxmd.com/read/25601059/posterior-fossa-tumor-with-distinct-choroid-plexus-papilloma-and-ependymoma-components
#2
Chunyu Cai, Bradley H Stephens, Jeffrey R Leonard, Sonika Dahiya
Synchronous occurrence of multiple primary central nervous system (CNS) tumors of different histological types is uncommon in patients without radiation history or genetic syndrome association. We herein report a sporadic case of posterior fossa tumor with synchronous choroid plexus papilloma (CPP) and ependymoma (EP) components. A 7-year-old girl with no significant past or familial medical history presented with 2 years of migraine type headaches. Brain magnetic resonance imaging showed a cystic mass with a mural enhancing nodule centered within the cerebellar vermis...
May 2015: Clinical Neuropathology
https://www.readbyqxmd.com/read/24735014/a-peculiar-histopathological-form-of-dysembryoplastic-neuroepithelial-tumor-with-separated-pilocytic-astrocytoma-and-rosette-forming-glioneuronal-tumor-components
#3
Ewa Matyja, Wiesława Grajkowska, Przemysław Kunert, Andrzej Marchel
Dysembryoplastic neuroepithelial tumors (DNTs) mostly display typical clinical, neuroimaging and histopathological features, but sometimes they reveal heterogeneous or non-specific morphology, which results in diagnostic dilemmas. We present a case of a young adult with longstanding, intractable epilepsy associated with a multinodular cystic lesion in the temporal lobe. The lesion consisted of morphologically different components. In particular, a few cortical nodules displayed a specific glioneuronal element with floating neurons typically found in DNT...
October 2014: Neuropathology: Official Journal of the Japanese Society of Neuropathology
https://www.readbyqxmd.com/read/23817895/pituicytoma-with-gelsolin-amyloid-deposition
#4
Cristiane M Ida, Xiaoling Yan, Mark E Jentoft, N Sertac Kip, Bernd W Scheithauer, Jonathan M Morris, Ahmet Dogan, Joseph E Parisi, Kalman Kovacs
Pituicytoma is a rare low-grade (WHO grade I) sellar region glioma. Among sellar tumors, pituitary adenomas, mainly prolactinomas, may show amyloid deposits. Gelsolin is a ubiquitous calcium-dependent protein that regulates actin filament dynamics. Two known gene point mutations result in gelsolin amyloid deposition, a characteristic feature of a rare type of familial amyloid polyneuropathy (FAP), the Finnish-type FAP, or hereditary gelsolin amyloidosis (HGA). HGA is an autosomal-dominant systemic amyloidosis, characterized by slowly progressive neurological deterioration with corneal lattice dystrophy, cranial neuropathy, and cutis laxa...
September 2013: Endocrine Pathology
https://www.readbyqxmd.com/read/23206621/organizing-hematoma-mimicking-brain-tumor
#5
Ahmet Turan Ilica, Fausto Rodrigues, Fernando Maluf, Nafi Aygun
A 64-year-old man was referred to our hospital with progressive loss of function in his right upper and lower extremities. Unenhanced computed tomographic showed a high-density nodular lesion in the left basal ganglion with surrounding hypoattenuation. Brain magnetic resonance imaging demonstrated a predominantly cystic mass with multiple internal septa and an eccentric solid component showing enhancement. Histological examination revealed organizing blood clot and piloid gliosis. This unusual appearance of a mass-like organizing blood clot should be considered in the differential diagnosis when an encapsulated cystic mass with nodular component following the signal characteristics of old blood on MRI is encountered...
January 2013: Clinical Imaging
https://www.readbyqxmd.com/read/18671648/postmortem-analysis-following-71-months-of-deep-brain-stimulation-of-the-subthalamic-nucleus-for-parkinson-disease
#6
David A Sun, Hong Yu, John Spooner, Armanda D Tatsas, Thomas Davis, Ty W Abel, Chris Kao, Peter E Konrad
Deep brain stimulation (DBS) of the subthalamic nucleus (STN) is a clinically effective neurosurgical treatment for Parkinson disease. Tissue reaction to chronic DBS therapy and the definitive location of active stimulation contacts are best studied on a postmortem basis in patients who have undergone DBS. The authors report the postmortem analysis of STN DBS following 5 years and 11 months of effective chronic stimulation including the histologically verified location of the active contacts associated with bilateral implants...
August 2008: Journal of Neurosurgery
https://www.readbyqxmd.com/read/17762936/ependymoma-and-intraparenchymal-calcifying-pseudoneoplasm-of-the-neural-axis-incidental-collision-or-unique-reactive-phenomenon
#7
Fausto J Rodriguez, Bernd W Scheithauer, Daryl R Fourney, Christopher A Robinson
The so-called "calcifying pseudoneoplasm of the neural axis" is a rare tumefactive lesion presumed to be reactive in nature. To our knowledge, association with a true neoplasm has not been previously reported. We recently encountered the case of a 67-year-old woman who underwent resection of an incidentally discovered cerebellar cystic mass with a distinct, calcified component. Histology demonstrated a partially ossified, lobulated, chondrocalcific lesion surrounded by chronic inflammation, spindle to epithelioid cells, and occasional multinucleated giant cells-all features of calcifying pseudoneoplasm of the neural axis...
March 2008: Acta Neuropathologica
https://www.readbyqxmd.com/read/16784993/papillary-glioneuronal-tumor-a-case-report-and-review-of-the-literature
#8
REVIEW
Daniel C Dim, Daniel C Lingamfelter, Eugenio M Taboada, Russell M Fiorella
Papillary glioneuronal tumor is a recently described central nervous system neoplasm that almost always occurs adjacent to the lateral ventricle. We present a case of this rare entity, representing the 21st case of this lesion, which exhibits a mixed astrocytic and neuronal differentiation. This case was an incidental finding in a young woman who presented secondary to a traumatic injury to the left eye. Histologic evaluation after surgical removal showed a cystic tumor consisting of 2 distinct components: a unique pseudopapillary architecture admixed with foci of solid areas...
July 2006: Human Pathology
https://www.readbyqxmd.com/read/13588395/piloid-gliosis-a-histological-study
#9
F R GRATTAROLA
No abstract text is available yet for this article.
October 1958: Journal of Neuropathology and Experimental Neurology
https://www.readbyqxmd.com/read/13446228/-piloid-gliosis
#10
F R GRATTAROLA
No abstract text is available yet for this article.
January 1957: Bollettino Della Società Italiana di Biologia Sperimentale
https://www.readbyqxmd.com/read/1932442/the-occurrence-of-rosenthal-fibres-in-the-brain-tissue-around-meningioma
#11
B Dmitrović, D Jadro-Santel, K Zarković
A case of endotheliomatous type of meningioma arising from the falx and dura of the left anterior cranial fossa is reported. Numerous Rosenthal fibres were observed in the gliotic tissue around the meningioma. Authors present a brief data about the nature and occurrence of Rosenthal fibres. The occurrence of the pilocytic astrocytes and Rosenthal fibres in the gliotic tissue around slow-growing falx meningioma is an additional evidence for a peculiar type of changes in astrocytes of the long-standing gliosis of piloid type...
1991: Neurologia Croatica: Official Journal of Yugoslav Neurological Association
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