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pineal region tumor

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https://www.readbyqxmd.com/read/27889662/pediatric-pineal-germinomas-epigenetic-and-genomic-approach
#1
Monserrat Pérez-Ramírez, Alejo Justino Hernández-Jiménez, Armando Guerrero-Guerrero, Alicia Georgina Siordia-Reyes, Marta Elena Hernández-Caballero, Antonio García-Méndez, Fernando Chico-Ponce de León, Fabio Abdel Salamanca-Gómez, Normand García-Hernández
OBJECTIVE: We identify and correlate chromosomal alterations, methylation patterns and gene expression in pediatric pineal germinomas. METHODS: CGH microarray, methylation and gene expression were performed through the Agilent platform. The results were analyzed with MatLab software, MapViewer, DAVID, GeneCards and Hippie. RESULTS: Amplifications were found in 1q24.2, 1q31.3, 2p11.2, 3p22.2, 7p13, 7p15.2, 8p22, 12p13.2, 14q24.3 y 22q12; and deletions were found in 1q21...
November 19, 2016: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/27889025/pineal-region-masses-in-pediatric-patients
#2
REVIEW
Benita Tamrazi, Marvin Nelson, Stefan Blüml
A review of pediatric pineal region tumors is provided with emphasis on advanced imaging techniques. The 3 major categories of pineal region tumors include germ cell tumors, pineal parenchymal tumors, and tumors arising from adjacent structures such as tectal astrocytomas. The clinical presentation, biochemical markers, and imaging of these types of tumors are reviewed.
February 2017: Neuroimaging Clinics of North America
https://www.readbyqxmd.com/read/27753657/a-comparative-immunohistochemical-study-of-epithelial-membrane-antigen-and-nherf1-ebp50-in-the-diagnosis-of-ependymomas
#3
Aruna Nambirajan, Mehar C Sharma, Madhu Rajeshwari, Aanchal Kakkar, Vaishali Suri, Chitra Sarkar
Ependymomas are gliomas that recapitulate normal ependymal cells. The epithelial membrane antigen (EMA) shows "dot-like" and "ring-like" staining patterns, highlighting "microlumens" or intracytoplasmic rosettes, a pathognomonic ultrastructural feature. NHERF1/EBP50, an adaptor protein localized at the apical plasma membrane of human epithelia, has been found to localize to these microlumens. We aimed to analyze the staining patterns of EMA and EBP50 in ependymomas and other tumors, and thereby compare their diagnostic utility...
October 7, 2016: Applied Immunohistochemistry & Molecular Morphology: AIMM
https://www.readbyqxmd.com/read/27752384/atypical-growth-pattern-of-an-intraparenchymal-meningioma
#4
Zhen Zeng, Tijiang Zhang, Yihua Zhou, Xiaoxi Chen
Meningiomas are the most common primary nonneuroglial extra-axial neoplasms, which commonly present as spherical or oval masses with a dural attachment. Meningiomas without dural attachment are rare and, according to their locations, are classified into 5 varieties, including intraventricular, deep Sylvain fissure, pineal region, intraparenchymal, or subcortical meningiomas. To the best of our knowledge, intraparenchymal meningioma with cerebriform pattern has never been reported. In this paper, we report a 34-year-old Chinese male patient who presented with paroxysmal headaches and progressive loss of vision for 10 months and blindness for 2 weeks...
2016: Case Reports in Radiology
https://www.readbyqxmd.com/read/27742368/neuroendocrine-carcinoma-of-the-pineal-parenchyma-the-first-reported-case
#5
Melanie Hakar, James P Chandler, Eileen H Bigio, Qinwen Mao
We report a case of a 35-year-old female patient who presented with worsening headaches, vertigo, and vision changes. MRI of the brain showed an enhancing lesion in the pineal region. The patient was taken for resection of the lesion which was classified as neuroendocrine carcinoma of the pineal parenchyma, intermediate grade. Histologically, the neoplasm was cellular, mitotically active, and composed of tightly packed cells with high nuclear cytoplasmic ratio, scant cytoplasm, and ill-defined cell borders...
October 11, 2016: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/27695568/papillary-tumor-of-pineal-region-a-rare-entity
#6
Meena Patil, Manjiri Karandikar
Pineal tumors comprise 0.4 - 1.0% of intracranial space-occupying lesions in adults. Papillary tumor of pineal region (PTPR) is a very rare entity. It has been newly described in WHO 2007 classification of brain tumors. Only a few case reports are available in the literature. We report a case of a 60 year-old female presenting with headache, giddiness and reduced vision. Imaging studies showed a pineal mass with areas of hemorrhage. All ventricles were normal. There was a past history of a pineal gland tumor excised 2 years ago...
October 2016: Asian Journal of Neurosurgery
https://www.readbyqxmd.com/read/27651341/primary-intracranial-germinomas-retrospective-analysis-of-five-cases
#7
Anas Abdallah, Murad Asilturk, Mustafa Levent Uysal, Erhan Emel, Betül Guler Abdallah, Bilge Bilgic, Gokcen Gundogdu
AIM: Primary intracranial germinomas (PIGs) are rare malignant brain tumors that represent approximately 0.2% to 1.7% of all primary intracranial tumors. PIGs have infrequent, but existent possibility of spinal cord metastases. In this study, clinical outcomes of five consecutive PIGs have been presented. MATERIAL AND METHODS: Medical records were retrospectively reviewed in 1,849 cases of intracranial tumors whom underwent surgery between the years 2005 and 2015, cases which confirmed as germinoma histopathologically were included in this study...
August 23, 2016: Turkish Neurosurgery
https://www.readbyqxmd.com/read/27554477/nationwide-population-based-incidence-and-survival-rates-of-malignant-central-nervous-system-germ-cell-tumors-in-korea-2005-2012
#8
Seung Hoon Lee, Kyu-Won Jung, Johyun Ha, Chang-Mo Oh, Hyeseon Kim, Hyeon Jin Park, Heon Yoo, Young-Joo Won
Purpose: Malignant CNS germ cell tumors (GCTs), although rare, are thought to occur more frequently among Asians. However, a recent population-based study revealed no differences in GCT incidence between Asians and Caucasians. Therefore, this study was conducted to determine the incidence and survival rates of CNS GCTs using the National Korea Cancer Registry, and to compare these rates to those in the United States and Japan. Materials and Methods: We extracted CNS GCT patients diagnosed between 2005 and 2012 from the Korean Central Cancer Registry database...
August 24, 2016: Cancer Research and Treatment: Official Journal of Korean Cancer Association
https://www.readbyqxmd.com/read/27554308/endoscopic-histological-mapping-of-a-mixed-germ-pineal-tumor-case-report
#9
Carlos Velásquez, Mónica Rivero-Garvía, Eloy Rivas, María de Los Angeles Cañizares, María José Mayorga-Buiza, Javier Márquez-Rivas
BACKROUND: The accurate histological diagnosis of germ cell tumors in the pineal region is a keystone for determining the best treatment strategy and their prognosis. This poses a challenge for the neuropathologist, considering the lack of a standarized procedure to obtain the biopsy samples which results in few and small specimens which are not suitable for diagnosis. CASE DESCRIPTION: The authors report a case in which a pineal region mixed germ cell tumor was accurately diagnosed by performing a histologic mapping through a dual burr-hole endoscopic approach...
August 20, 2016: World Neurosurgery
https://www.readbyqxmd.com/read/27535020/cytologic-features-of-papillary-tumor-of-the-pineal-region-a-case-report-showing-tigroid-background
#10
José A Jiménez-Heffernan, Carmen Bárcena, Carlos Gordillo, José M Cañizal
Papillary tumor of the pineal region (PTPR) is a rare neuroepithelial tumor of the pineal region of adults. We herein describe on a 34-year-old female the cytologic features of a PTPR studied using Diff-Quik stain. The patient presented hydrocephalia secondary to a pineal tumor. During surgery an intraoperative pathologic consultation was requested. Smears were hypercellular with numerous papillary tissue fragments and single cells. Papillary fragments had an evident inner vascular core. Neoplastic cells displayed moderate pleomorphism, plasmocytoid morphology, and cytoplasmic fragility...
December 2016: Diagnostic Cytopathology
https://www.readbyqxmd.com/read/27506850/purely-endoscopic-resection-of-pineal-region-tumors-using-infratentorial-supracerebellar-approach-how-i-do-it
#11
Ye Gu, Fan Hu, Xiaobiao Zhang
BACKGROUND: Infratentorial supracerebellar approach via microscope still has some limitations in resection of pineal region tumors. METHODS: The authors describe a purely endoscopic infratentorial supracerebellar approach for resection of pineal region tumors with matched air-driven arm and navigation. The lateral oblique position is adopted. The same bimanual microsurgical techniques are utilized in this endoscopic approach with panoramic view and satisfying comfort...
November 2016: Acta Neurochirurgica
https://www.readbyqxmd.com/read/27476035/pineal-region-tumors-a-simplified-management-scheme
#12
Mohamed A Zaazoue, Liliana C Goumnerova
No abstract text is available yet for this article.
July 30, 2016: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/27475314/bifocal-germinomas-in-the-pineal-region-and-hypothalamo-neurohypophyseal-axis-primary-or-metastasis
#13
Hui Zhang, Song-Tao Qi, Jun Fan, Lu-Xiong Fang, Bing-Hui Qiu, Yi Liu, Xiao-Yu Qiu
Whether bifocal germinomas (BFGs) synchronously presenting within the pineal region and the hypothalamo-neurohypophyseal axis (HNA) are primary germinomas of dual-origin remains to be elucidated. We analyzed MRI images and clinical features of 95 neurohypophyseal germinomas and 21 BFG patients and developed a tentative definition of the BFGs. We found dual-primary BFGs (true BFGs) do exist. The fundamental difference between primary and metastatic HNA germinomas was the direction of tumor growth. For a true BFG, the primary HNA tumor grew from the neurohypophysis toward the hypothalamus and almost invaded the whole pituitary stalk...
July 28, 2016: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/27401449/statistical-report-of-central-nervous-system-tumors-histologically-diagnosed-in-the-sichuan-province-of-china-from-2008-to-2013-a-west-china-glioma-center-report
#14
Xiang Wang, Jin-Xiu Chen, Qiao Zhou, Yan-Hui Liu, Qing Mao, Chao You, Ni Chen, Li Xiong, Jie Duan, Liang Liu
BACKGROUND: Sichuan is a province in the west of China with a population of 81.4 million. This is the first statistical report of central nervous system (CNS) tumors surgically treated and histologically diagnosed in a large Chinese population. METHODS: All the patient data were obtained from 86 medical facilities, which covered the Sichuan province population. Data from patients who underwent surgery between 2008 and 2013 and corresponding histology samples were re-reviewed in the major pathology centers...
July 11, 2016: Annals of Surgical Oncology
https://www.readbyqxmd.com/read/27351562/recent-advances-in-molecular-biology-and-treatment-strategies-for-intracranial-germ-cell-tumors
#15
REVIEW
Xiang Huang, Rong Zhang, Ying Mao, Liang-Fu Zhou, Chao Zhang
BACKGROUND: Intracranial germ cell tumors (IGCTs) are a group of rare pediatric brain tumors which include various subtypes. The current understanding of the etiology of the tumors and their optimal management strategies remain controversial. DATA SOURCES: The data on IGCTs were collected from articles published in the past 20 years, and the origin and etiology of IGCTs at molecular level as well as the relative roles of varied treatment strategies in different prognosis groups according to Matsutani's classification were reviewed...
August 2016: World Journal of Pediatrics: WJP
https://www.readbyqxmd.com/read/27315314/acquired-encephalocele-with-hydrocephalus-and-pineal-region-epidermoid-cyst
#16
Zafer Orkun Toktaş, Baran Yilmaz, Murat Şakir Ekşi, Ahmed B Bayoumi, Akin Akakin, Yasin Yener, Mustafa Kemal Demir, Türker Kiliç
A combination of trauma and a missed inflammatory response (nasal operation) concomitant with hydrocephalus and tumor in secondary encephalocele has not been described in the English literature yet. A 38-year-old man was admitted to the clinic with rhinorrhea that started 3 months ago. In his medical history, nothing abnormal was present except a nasal operation performed 1 year ago. Brain magnetic resonance imaging depicted left frontal encephalocele concomitant with obstructive hydrocephalus caused by an epidermoid cyst originated from the pineal region...
July 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/27307151/atypical-teratoid-rhabdoid-tumors-with-multilayered-rosettes-in-the-pineal-region
#17
Junmei Wang, Zhaoxia Liu, Jingyi Fang, Jiang Du, Yun Cui, Li Xu, Guilin Li
Atypical teratoid/rhabdoid tumor (AT/RT) is a rare, highly malignant tumor of the central nervous system (CNS) that typically occurs during infancy. These tumors exhibit morphologic heterogeneity and differentiate along multiple lineages, thus posing a diagnostic challenge. Here, we present two cases of AT/RT with a primitive neuroectodermal component and histological pattern resembling an embryonal tumor with multilayered rosettes (ETMR), a rare but distinctive embryonal entity with different therapeutic implications...
June 15, 2016: Brain Tumor Pathology
https://www.readbyqxmd.com/read/27229317/nherf1-ebp50-and-nf2-as-diagnostic-markers-for-choroid-plexus-tumors
#18
Maria-Magdalena Georgescu, Bret C Mobley, Brent A Orr, Ping Shang, Norman L Lehman, Xiaoping Zhu, Thomas J O'Neill, Veena Rajaram, Kimmo J Hatanpaa, Charles F Timmons, Jack M Raisanen
The adaptor protein NHERF1 (Na/H exchanger-3 regulatory factor-1) and its associated ezrin-radixin-moesin-merlin/neurofibromin-2 (ERM-NF2) family proteins are required for epithelial morphogenesis and have been implicated in cancer progression. NHERF1 is expressed in ependymal cells and constitutes a highly sensitive diagnostic marker for ependymoma, where it labels membrane polarity structures. Since NHERF1 and ERM-NF2 proteins show polarized expression in choroid plexus (CP) cells, we tested their diagnostic utility in CP neoplasms...
2016: Acta Neuropathologica Communications
https://www.readbyqxmd.com/read/27217965/endodermal-cyst-in-pineal-region-rare-location
#19
Miguel Angel Lopez-Gonzalez, Eugen Dolan
BACKGROUND: Pineal tumors are very uncommon intracranial lesions, and endodermal cysts in this location are extremely rare. CASE DESCRIPTION: A 49-year-old right-handed female presented with 3 weeks history of progressive dizziness and imbalance. Imaging studies showed 1.8 cm × 1.7 cm × 1.8 cm pineal lesion with small enhancing mural component displacing ventrally the quadrigeminal plate and narrowing of aqueduct of Sylvius without hydrocephalus. In addition, she was found with small interhemispheric lipoma, and small posterior falx possible meningioma...
2016: Surgical Neurology International
https://www.readbyqxmd.com/read/27195038/atypical-rhabdoid-tumor-of-lateral-ventricle-report-of-an-unusual-tumor
#20
Jasmit Singh, Hrushikesh Kharosekar, Vernon Velho, Praveen Survashe
Supratentorial atypical teratoid rhabdoid tumors (AT/RTs) of infancy and childhood are rare, highly malignant neoplasms, most common in the first 2 years of life. In spite of multiple treatment regimens consisting of surgical resection, radiation therapy, and multi-agent chemotherapy, the prognosis is very poor. The majority of these tumors are located in the cerebellum, cerebellopontine angle, pineal gland, spinal cord, and the suprasellar region; supratentorial location is relatively uncommon, and the intraventricular location is extremely rare...
January 2016: Journal of Pediatric Neurosciences
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