High-grade brain tumors are heterogeneous with respect to the composition of bona fide tumor cells and with respect to a range of intermingling parenchymal cells. Glioblastomas harbor multiple cell types, some with increased tumorigenicity and stem cell-like capacity. The stem-like cells maybe the cells of origin for tumor relapse. However, the tumor-associated parenchymal cells such as vascula...

abstract background: asterocytoma is the most common primary human brain tumor which has the most lethal hazard among tumors in human central nervous system. heat shock proteins play an active role in cancer cells pathways through their effects on tumor cell proliferation, tumor differentiation, malignancy, metastasis, and cell death. hsp 70 is a 70 kd protein that its expression change has bee...

background: understanding the differences in genetics of malignancies is crucial for therapeutic decisions. this systematic review was conducted to evaluate the current evidence on genetics of bone tumors in the context of pediatric cancer. material and methods: we performed a systematic review of the literature published on genetics of pediatrics bone tumors, using pubmed, google scholar, scie...

UNLABELLED The aim of this study was to evaluate the diagnostic value of whole-body (18)F-FDG PET imaging in the differentiation of metastatic brain tumor from primary brain tumor and in the localization of the primary lesion in patients with metastatic brain tumor. METHODS The subjects consisted of 127 patients (77 men, 50 women; mean age +/- SD, 55 +/- 12 y) with brain masses that were susp...

multiple sclerosis (ms) is an inflammatory disorder, in which neurons become demyelinated. to date, its etiology has remained unknown. nevertheless, certain features are inspected to provoke ms. for instance, improper function of immune cells is widely believed to be the basis of such disorder. in this concept, ms is stated as an autoimmune disease, which was asserted by major of studies, as cd...

Glioblastoma multiforme (GBM) is well known as the most common malignant primary brain tumor. It could easily spread into the adjacent or distant brain tissue by infiltration, direct extension and cerebro-spinal fluid dissemination. The extranueural metastatic spread of GBM is relatively rare but it could have more progressive disease course. We report a 39-year-old man who had multiple bone me...

Primary tumors of the aorta are rare entities. We report the unusual manifestation of an aortic intimal sarcoma that presented as a brain metastasis in a 56-year-old, otherwise healthy woman. After the brain mass had been resected, multiple imaging methods revealed pseudocoarctation and the primary tumor in the aortic arch. To our knowledge, this is the first report of the diagnosis of an aorti...

Brain metastases (BM) are the most common intracranial neoplasm in adults. Initially considered as an essentially terminal stage of advanced cancer, BM increasingly being recognized emerging area clinical interest. Their epidemiological characteristics have changed significantly, including increased incidence tumors frequently associated with BM, such lung and breast cancer or melanoma, but als...

background: learning disability is one of the most noticed subjects for behavioral specialists. most of the learning difficulties are caused by senso-motor development and neurological organization. the main purpose of the present research is to examine the role of delayed perceptual-motor development and brain damage in origination of expressive writing disorder (ewd).   methods: the studied s...