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Cns pnet, pineoblastoma

Regina I Jakacki, Peter C Burger, Mehmet Kocak, James M Boyett, Joel Goldwein, Minesh Mehta, Roger J Packer, Nancy J Tarbell, Ian F Pollack
BACKGROUND: Supratentorial PNETs (sPNET) are uncommon embryonal malignancies of the central nervous system whose prognosis has historically been poor. We evaluated the outcome and prognostic factors of children with sPNET treated prospectively on a Children's Oncology Group trial. PROCEDURE: Following surgery, patients received craniospinal radiotherapy with concurrent carboplatin followed by six months of maintenance chemotherapy with cyclophosphamide and vincristine...
May 2015: Pediatric Blood & Cancer
W Reith, R Mühl-Benninghaus, A Simgen, U Yilmaz
Germ cell tumors, which constitute approximately 3-5% of tumors of the central nervous system (CNS), can be subdivided into germinomas, embryonal carcinomas, yolk sac tumors, choriocarcinomas, teratomas and mixed germ cell tumors. The diagnosis of intracranial germ cell tumor is based on the clinical symptoms, detection of tumor markers, such as alpha fetoprotein (AFP) and the beta subunit of human chorionic gonadotropin (beta-hCG) in blood and cerebrospinal fluid (CSF), magnetic resonance imaging (MRI) of the brain and spinal cord, CSF cytology and histology...
August 2014: Der Radiologe
Carsten Friedrich, Klaus Müller, Katja von Hoff, Robert Kwiecien, Torsten Pietsch, Monika Warmuth-Metz, Nicolas U Gerber, Peter Hau, Joachim Kuehl, Rolf D Kortmann, André O von Bueren, Stefan Rutkowski
Central nervous system primitive neuroectodermal tumors (CNS-PNET) and pineoblastomas (PBL) are rare in adulthood. Knowledge on clinical outcome and the efficacy and toxicities of chemotherapy in addition to radiotherapy is limited. Patients older than 21 years at diagnosis were followed in the observational arm of the prospective pediatric multicenter trial HIT 2000. After surgery, craniospinal irradiation and maintenance or sandwich chemotherapy were recommended. Radiotherapy was normo- (35.2 Gy; tumor region, 55...
February 2014: Journal of Neuro-oncology
Sébastien Perreault, Robert M Lober, Anne-Sophie Carret, Guohua Zhang, Linda Hershon, Jean-Claude Décarie, Kristen Yeom, Hannes Vogel, Paul G Fisher, Sonia Partap
Embryonal tumors of the central nervous system (CNS) share histological features and were therefore initially grouped as primitive neuroectodermal tumors (PNET) and treated similarly. We sought to determine the relapse patterns of specific embryonal CNS tumors. We conducted a historical cohort study of children diagnosed with CNS embryonal tumors from January 2000 to December 2011 in two pediatric neuro-oncology centers. Patients of 21 years of age or younger at time of presentation with a diagnosis of medulloblastoma, supratentorial PNET, pineoblastoma or atypical teratoid/rhabdoid tumor (ATRT) and at least one surveillance MRI were included...
November 2013: Journal of Neuro-oncology
Carsten Friedrich, André O von Bueren, Katja von Hoff, Nicolas U Gerber, Holger Ottensmeier, Frank Deinlein, Martin Benesch, Robert Kwiecien, Torsten Pietsch, Monika Warmuth-Metz, Andreas Faldum, Joachim Kuehl, Rolf D Kortmann, Stefan Rutkowski
BACKGROUND: Especially in young children, primitive neuroectodermal tumors of the central nervous system (CNS-PNET) and pineoblastomas are associated with an unfavorable outcome, and only a few prospective trials have been conducted thus far. METHODS: From January 2001 through January 2005, 17 eligible children aged <4 years with CNS-PNET not otherwise specified (n = 8), ependymoblastoma (n = 1), or pineoblastoma (n = 8) confirmed by central review were prospectively treated in the trial HIT 2000...
February 2013: Neuro-oncology
André O von Bueren, Joachim Gerss, Christian Hagel, Haoyang Cai, Marc Remke, Martin Hasselblatt, Burt G Feuerstein, Sarah Pernet, Olivier Delattre, Andrey Korshunov, Stefan Rutkowski, Stefan M Pfister, Michael Baudis
Little is known about frequency, association with clinical characteristics, and prognostic impact of DNA copy number alterations (CNA) on survival in central primitive neuroectodermal tumors (CNS-PNET) and tumors of the pineal region. Searches of MEDLINE, Pubmed, and EMBASE--after the original description of comparative genomic hybridization in 1992 and July 2010--identified 15 case series of patients with CNS-PNET and tumors of the pineal region whose tumors were investigated for genome-wide CNA. One additional case study was identified from contact with experts...
September 2012: Journal of Neuro-oncology
Suzanne Miller, Jennifer H Ward, Hazel A Rogers, James Lowe, Richard G Grundy
Pediatric embryonal brain tumors can be difficult to classify. Atypical teratoid rhabdoid tumors (ATRT) contain rhabdoid cells, while primitive neuroectodermal tumors (PNETs) are composed of "small round blue cells." Loss of INI1 is a common event in ATRT; therefore, we investigated if the loss of INI1 protein expression was also observed in central nervous system (CNS) PNET and pineoblastoma. A histological review of 42 CNS PNETs and six pineoblastomas was performed. INI1 expression was assessed by immunohistochemistry...
January 2013: Brain Pathology
Suzanne Miller, Hazel A Rogers, Paul Lyon, Vikki Rand, Martyna Adamowicz-Brice, Steven C Clifford, James T Hayden, Sara Dyer, Stefan Pfister, Andrey Korshunov, Marie-Anne Brundler, James Lowe, Beth Coyle, Richard G Grundy
Central nervous system primitive neuroectodermal tumor (CNS PNET) and pineoblastoma are highly malignant embryonal brain tumors with poor prognoses. Current therapies are based on the treatment of pediatric medulloblastoma, even though these tumors are distinct at both the anatomical and molecular level. CNS PNET and pineoblastoma have a worse clinical outcome than medulloblastoma; thus, improved therapies based on an understanding of the underlying biology of CNS PNET and pineoblastoma are needed. To this end, we characterized the genomic alterations of 36 pediatric CNS PNETs and 8 pineoblastomas using Affymetrix single nucleotide polymorphism arrays...
August 2011: Neuro-oncology
Po Zhao, Alexis Strohl, Corina Gonzalez, Thomas Fishbein, Sandra Rosen-Bronson, Bhaskar Kallakury, Metin Ozdemirli
Transplant-transmitted malignances are rare but devastating events. Primary brain tumors are the least common among reported donor-derived malignancies. We report a case of donor-transmitted pineoblastoma, a PNET, in a two-yr-old male recipient, who presented with a rapidly growing mass in the right mandible, four months after multiple visceral organ transplantation. The recipient had liver, pancreas, and small bowel transplants because of end-stage liver failure and short gut syndrome, which was secondary to large bowel resection for management of gastroschisis complicated by intestinal volvulus...
June 2012: Pediatric Transplantation
Amy Rosenfeld, Morris Kletzel, Reggie Duerst, David Jacobsohn, Paul Haut, Joanna Weinstein, Alfred Rademaker, Colleen Schaefer, Lauren Evans, Molly Fouts, Stewart Goldman
High risk/recurrent CNS tumors have a poor prognosis. We studied tandem high dose chemotherapy (HDC) with hematopoietic progenitor stem cell rescues (HPCR) as potentially curative therapy. Twenty-four patients (mean age 6.8 years) were enrolled, 19 underwent HDC/HPCR. Diagnoses were medulloblastoma (n = 9), germ cell tumor (n = 4), high grade astrocytoma (n = 2), supratentorial PNET (n = 1), pineoblastoma (n = 2), or papillary meningioma (n = 1). Cytoreduction regimen #1 consisted of carboplatin (500 mg/m(2)) x 3 days, etoposide (250 mg/m(2)) x 3 days, and thiotepa (300 mg/m(2)) x 3 days...
April 2010: Journal of Neuro-oncology
Stewart J Kellie, Christopher K F Wong, Luciano Dalla Pozza, Keith D Waters, Liane Lockwood, David C Mauger, Les White
BACKGROUND: Chemotherapy is used as an alternative to irradiation or to minimize the irradiation exposure among infants with medulloblastoma or other CNS embryonal tumors. Adjuvant chemotherapy is commonly used in older children with high-risk medulloblastoma to improve survival or to allow a reduction in the craniospinal irradiation dose in standard-risk patients. However, optimal multimodality therapy, including the precise role of chemotherapy, has not been defined for these groups of patients...
September 2002: Medical and Pediatric Oncology
N Ishii, H Hiraga, Y Sawamura, Y Shinohe, K Nagashima
Primitive neuroectodermal tumors (PNET) occur either in the central nervous system (CNS; central PNET, cPNET) or in the peripheral sites (peripheral PNET, pPNET). Recent molecular approaches have been defining a new concept of PNET, that is, the pPNET including Ewing's sarcoma (ES) which expresses MIC2 glycoprotein and shows the specific chimeric gene of EWS-FLI1. The expression of MIC2 and the genetic rearrangement of EWS-FLI1 are considered to be highly specific to the pPNET/ES. This study examined the expression of MIC2 and EWS-FLI1 gene by means of immunohistochemistry and reverse transcriptase-polymerase chain reaction (RT-PCR) on various small round cell tumors originating in the CNS or non-CNS organs...
March 2001: Neuropathology: Official Journal of the Japanese Society of Neuropathology
U R Kees, D Spagnolo, L A Hallam, J Ford, P R Ranford, D L Baker, D F Callen, J A Biegel
Pineoblastoma is a rare, but highly malignant tumor of the central nervous system (CNS) in children and is classified as a central primitive neuroectodermal tumor (PNET). Despite notable recent advances in understanding the molecular genetic basis of malignancies, the pathogenesis of PNETs remains enigmatic. There is scant information on the cytogenetics of PNETs arising in the pineal gland and the only three reported cases did not show any common aberrations. Here we report the establishment and characterization of a new pineoblastoma cell line, PER-480...
January 15, 1998: Cancer Genetics and Cytogenetics
E Galanis, J C Buckner, P J Schomberg, J E Hammack, C Raffel, B W Scheithauer
PURPOSE: Embryonal tumors of the CNS include, among others, medulloblastoma, cerebral neuroblastoma, pineoblastoma, and primitive neuroectodermal tumors (PNETs). Almost all data on the treatment of embryonal CNS tumors are derived from the pediatric population, since these tumors are uncommon in adulthood. The purpose of this study was to examine the rate and duration of response to chemotherapy of advanced embryonal CNS tumors in adults. PATIENTS AND METHODS: We retrospectively studied all adult (> 18 years of age) patients with advanced embryonal tumors of the CNS who received chemotherapy at our institution between 1976 and 1994...
August 1997: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
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