Glioblastoma multiforme overview: Difference between revisions
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==Ultrasound== | ==Ultrasound== | ||
There are no ultrasound findings associated with glioblastoma multiforme. | |||
==Other Imaging Findings== | ==Other Imaging Findings== | ||
Other imaging tests for glioblastoma multiforme include [[PET scan]], which demonstrates accumulation of [18F]-fluorodeoxyglucose (increased [[glucose metabolism]]).<ref name=ddd>Radiographic features of glioblastoma multiforme. Dr Dylan Kurda and Dr Frank Gaillard et al. Radiopaedia 2015. http://radiopaedia.org/articles/glioblastoma</ref> | |||
==Other Diagnostic Studies== | ==Other Diagnostic Studies== | ||
Other diagnostic studies for glioblastoma multiforme include [[biopsy]], which demonstrates pleomorphic astroctyes with marked [[atypia]] and [[mitoses]].<ref name=ddd>Pathology of glioblastoma multiforme. Dr Dylan Kurda and Dr Frank Gaillard et al. Radiopaedia 2015. http://radiopaedia.org/articles/glioblastoma</ref> | |||
==Medical Therapy== | ==Medical Therapy== | ||
The predominant therapy for glioblastoma multiforme is [[surgical resection]]. Adjunctive [[chemotherapy]] and [[radiation]] may be required.<ref name=ddd>Treatment of glioblastoma multiforme. Dr Dylan Kurda and Dr Frank Gaillard et al. Radiopaedia 2015. http://radiopaedia.org/articles/glioblastoma</ref> Supportive therapy for glioblastoma multiforme includes [[anticonvulsants]] and [[corticosteroids]]. | |||
==Surgery== | ==Surgery== | ||
Surgery is the mainstay of treatment for glioblastoma multiforme.<ref name=ddd>Treatment of glioblastoma multiforme. Dr Dylan Kurda and Dr Frank Gaillard et al. Radiopaedia 2015. http://radiopaedia.org/articles/glioblastoma</ref | |||
==References== | ==References== | ||
Revision as of 18:26, 18 September 2015
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]Associate Editor(s)-in-Chief: Sujit Routray, M.D. [2]
Overview
Historical Perspective
Glioblastoma multiforme was first coined by Percival Bailey and Harvey Cushing in 1926.[1]
Classification
Glioblastoma multiforme may be classified into several subtypes based on the origin and molecular alterations.[1][2]
Pathophysiology
Glioblastoma multiforme is characterized by the presence of small areas of necrotizing tissue that are surrounded by anaplastic cells. Genes involved in the pathogenesis of glioblastoma multiforme include Mdm2, PTEN, IDH1, p53, and chromosomes 10p, 10q, 17p, and 19q. On gross pathology, the characteristic findings of glioblastoma multiforme include a poorly-marginated, diffusely infiltrating, firm or gelatinous mass with central necrotic core. On microscopic histopathological analysis, the characteristic findings of Glioblastoma multiforme include pleomorphic astrocytes with marked atypia, mitosis, necrosis, and microvascular proliferation.[1]
Causes
There are no established causes for glioblastoma multiforme.[1]
Differentiating brain tumors from other diseases
Glioblastoma multiforme must be differentiated from cerebral metastasis, primary CNS lymphoma, cerebral abscess, anaplastic astrocytoma, tumefactive demyelination, stroke, cerebral toxoplasmosis, radiation necrosis, encephalitis, oligodendroglioma, and epilepsy.[1]
Epidemiology and Demographics
Glioblastoma multiforme is the the most common adult primary intracranial neoplasm worldwide.[1] The incidence of glioblastoma multiforme is estimated to be 3.2 cases per 100,000 individuals worldwide.[3] Glioblastoma multiforme is a common disease that tends to affect older adult and elderly population. The median age at diagnosis is 64 years.[3] Males are more commonly affected with glioblastoma multiforme than females. The male to female ratio is approximately 1.5:1. Glioblastoma multiforme usually affects individuals of the caucasian race.
Risk factors
Common risk factors in the development of glioblastoma multiforme are radiation exposure, viruses, polyvinyl chloride, alcohol, and genetic disorders.[1]
Screening
Screening for glioblastoma multiforme is not recommended.
Natural History, Complications and Prognosis
Common complications of glioblastoma multiforme include herniation, systemic illness, brainstem invasion by tumor, neutron-induced cerebral injury, weakness, fatigue, numbness, surgical complications, and coma.[4] Prognosis is generally poor, and the 5-year survival rate of patients with glioblastoma multiforme is less than 10%.
Staging
There is no established system for the staging of glioblastoma multiforme.
History and Symptoms
Common symptoms of glioblastoma multiforme include headache, seizure, memory loss, irritability, changes in speech, difficulty reading or concentrating, drowsiness, nausea, vomiting, muscle weakness, sensory loss, diplopia, blurred vision, vertigo, hearing loss, and hiccups.[1]
Physical examination
Common physical examination findings of glioblastoma multiforme include personality changes, memory loss, aphasia, hemiparesis, sensory loss, and ataxia.[1]
Laboratory Findings
There are no diagnostic lab findings associated with glioblastoma multiforme.
X Ray
There are no x-ray findings associated with glioblastoma multiforme.
CT
Head CT scan is helpful in the diagnosis of glioblastoma multiforme. On head CT scan, glioblastoma multiforme is characterized by a butterfly shaped mass with marked midline shift, irregular and heterogenous enhancement of margins, necrotic center, surrounding vasogenic edema, and hemorrhage.[1]
MRI
Brain MRI is helpful in the diagnosis of glioblastoma multiforme. On brain MRI, glioblastoma multiforme is characterized by hypointense mass on T1-weighted MRI and hyperintense mass on T2-weighted MRI.[1]
Ultrasound
There are no ultrasound findings associated with glioblastoma multiforme.
Other Imaging Findings
Other imaging tests for glioblastoma multiforme include PET scan, which demonstrates accumulation of [18F]-fluorodeoxyglucose (increased glucose metabolism).[1]
Other Diagnostic Studies
Other diagnostic studies for glioblastoma multiforme include biopsy, which demonstrates pleomorphic astroctyes with marked atypia and mitoses.[1]
Medical Therapy
The predominant therapy for glioblastoma multiforme is surgical resection. Adjunctive chemotherapy and radiation may be required.[1] Supportive therapy for glioblastoma multiforme includes anticonvulsants and corticosteroids.
Surgery
Surgery is the mainstay of treatment for glioblastoma multiforme.<ref name=ddd>Treatment of glioblastoma multiforme. Dr Dylan Kurda and Dr Frank Gaillard et al. Radiopaedia 2015. http://radiopaedia.org/articles/glioblastoma</ref
References
- ↑ 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09 1.10 1.11 1.12 1.13 Terminology of glioblastoma multiforme. Dr Dylan Kurda and Dr Frank Gaillard et al. Radiopaedia 2015. http://radiopaedia.org/articles/glioblastoma
- ↑ Verhaak RG, Hoadley KA, Purdom E, Wang V, Qi Y, Wilkerson MD; et al. (2010). "Integrated genomic analysis identifies clinically relevant subtypes of Glioblastoma multiforme characterized by abnormalities in PDGFRA, IDH1, EGFR, and NF1". Cancer Cell. 17 (1): 98–110. doi:10.1016/j.ccr.2009.12.020. PMC 2818769. PMID 20129251.
- ↑ 3.0 3.1 Thakkar JP, Dolecek TA, Horbinski C, Ostrom QT, Lightner DD, Barnholtz-Sloan JS; et al. (2014). "Epidemiologic and molecular prognostic review of glioblastoma". Cancer Epidemiol Biomarkers Prev. 23 (10): 1985–96. doi:10.1158/1055-9965.EPI-14-0275. PMC 4185005. PMID 25053711.
- ↑ Silbergeld DL, Rostomily RC, Alvord EC (1991). "The cause of death in patients with glioblastoma is multifactorial: clinical factors and autopsy findings in 117 cases of supratentorial glioblastoma in adults". J Neurooncol. 10 (2): 179–85. PMID 1654403.