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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

The Mystery of Multiple Masses: A Case of Anaplastic Astrocytoma

Sethi, Pooja, Treece, Jennifer, Pai, Vandana, Onweni, Chidinma, Rahman, Zia, Singh, Siddharth 23 June 2017 (has links)
Though most primary brain gliomas present as a single mass lesion in the brain, this potential diagnosis must be considered in the differential diagnosis when faced with a case of multifocal brain mass lesions. Among the most common brain tumors in humans, glioblastomas can be classified into four classes, one of which consists of anaplastic astrocytomas (AA). Due to its significant malignant potential, a prompt stereotactic brain biopsy should be considered to allow for early diagnosis. Karyotypic analysis of the specimen may allow for the discovery of 1p12q and IDH132 gene mutations. This knowledge can be used to best determine prognosis and guide therapy.
2

Klinischer Verlauf und Analyse des Rezidivmusters von 111 Patienten mit anaplastischem Astrozytom oder Glioblastoma multiforme nach Operation und lokaler Strahlentherapie

Graubner, Sebastian 25 May 2005 (has links)
Die vorliegende Arbeit ist eine retrospektive Kohortenstudie, welche alle Patienten einschloß, die im Zeitraum von 07/1988 bis 06/1997 aufgrund eines anaplastischen Astrozytoms oder eines Glioblastoma multiforme im damaligen Rudolf-Virchow-Klinikum in Berlin eine Strahlentherapie des Kopfes erhielten. Von den 111 Patienten erlitten im Beobachtungszeitraum 85 ein radiologisches Rezidiv. Die mediane Überlebenszeit betrug 9 Monate. 69 der Rezidive waren Zentralrezidive, 7 Randrezidive und 9 Fernrezidive. Auch die Rand- und Fernrezidive rezidivierten zusätzlich am Ort der Primärläsion. Es konnte gezeigt werden dass ein Sicherheitsabstand von 2-3 cm ausreicht um 90% der Rezidive vollständig zu erfassen und dass die lokale Kontrolle weiterhin das Hauptproblem bei der Behandlung dieser malignen Gliome ist. / This retrospective study reviews the data of 111 patients treated from 07/1988 to 06/1997 at the Rudolf-Virchow-Klinikum in Berlin. Both patients with anaplastic astrocytoma and glioblastoma multiforme were included. 85 patients showed radiological recurrence of tumour. Median survival was 9 months. 69 recurrences were central, 7 near and 9 distant recurrences. Near and distant recurrences were always multifocal, i. e. they recurred also at central locations. It was shown that a safety margin of 2-3 cm is sufficient to completely cover 90% of recurrent tumour. Local failure is still the primary difficulty in treating these malignant glioma.
3

Zytogenetische Grundlage der malignen Progression anaplastischer Astrozytome: Chromosomale Aberrationen von Primärtumoren, Rezidiven und ihr Einfluss auf das Überleben / Cytogenetic basics of malignant progression of anaplastic astrocytoma: Chromosomal aberrations of primary and recurrent tumors and their influence on survival

Haupt, Jörn 02 November 2011 (has links)
No description available.

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