نتایج جستجو برای: brain tumors
تعداد نتایج: 633884 فیلتر نتایج به سال:
Background: The brain and spinal cord tumors account for 15% to 20% of all childhood malignancies. It is important to know the epidemiologic characteristics and survival of these patients to better understand the disease and the factors affecting its prognosis. The aim pf this study was to characterize the clinicopathology and survival rate of childhood and adolescent brain and spinal cord tumo...
Many studies have been focused on cytogenetic and molecular genetic defects in brain tumors; therefore the role of ATM as a tumor suppressor gene in these tumors is poorly considered. In this study mutation analysis of exon 19 and 39 of ATM gene and P53 accumulation were investigated by PCR-SSCP, sequencing, and flow cytometry . Four polymorphisms including D1853N, IVS 38-8 T?C, F858L, P872T we...
background: tumors of the central nervous system (cns) are a heterogeneous group of neoplasms with different prevalence in different sex and age groups and various parts of cns. objectives: determining the relative frequency of different types of cns tumors in different ages, sex and cns anatomical locations. materials and methods: this retrospective study was performed using pathological repor...
gliomas account for almost 80% of primary malignant brain tumors in adults. magnetic resonance imaging (mri) is still the gold standard for diagnosis of brain tumors and brain 99mtc-tetrofosmin single photon emission computed tomography (99mtc-tetrofosmin-spect) has been established as a useful tool for their evaluation. fluorine-18–2-fluoro-2-deoxy-d-glucose positron emission tomography/comput...
Gliomas account for almost 80% of primary malignant brain tumors in adults. Magnetic Resonance imaging (MRI) is still the gold standard for diagnosis of brain tumors and brain 99mTc-tetrofosmin Single Photon Emission Computed Tomography (99mTc-tetrofosmin-SPECT) has been established as a useful tool for their evaluation. Fluorine-18–2-fluoro-2-deoxy-d-glucose positron emi...
Glioblastoma is a destructive form of brain tumor that kills most patients within two years of diagnosis.Treatments for glioblastoma include the usual options of surgery, radiation therapy and chemotherapy, but there is no effective treatment. The tumors are capable of spreading tendrils out into the brain and it can grow back in a matter of months after being removed. The cancer stem cell...
Introduction: Neurofibromatosis type 2 is an inherited autosomal dominant syndrome, charac-terized by multiple neoplasms of the central and peripheral nervous system associated with ocular abnormalities. The most common tumor associated with the disease is the vestibulo-cochlear and in later stages are meningioma and other brain tumors. Case Report: The patient was a 35 year old woman admitte...
how to cite this article: tabatabaei sm, seddighi a, seddighi as. posterior fossa tumor in children. iran. j. child. neurol 2012;6(2): 19-24. objective primary brain tumors are the most common solid neoplasms of childhood, representing 20% of all pediatric tumors. the best current estimates place the incidence between 2.76 and 4.28/100,000 children per year. compared with brain tumors in adul...
Introduction: The brain tumor is an abnormal growth of tissue in the brain, which is one of the most important challenges in neurology. Brain tumors have different types. Some brain tumors are benign and some brain tumors are cancerous and malignant. Glioblastoma Multiforme (GBM) is the most common and deadliest malignant brain tumor in adults. The average survival rate for peo...
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