Glioma
Glioma referred to as glioma, is a place in neuroectodermal tumor. Neuroectodermal tumors have occurred in two categories by the stromal cells, known as glioma; in real terms from the other cells, called neurons tumor. As the etiology and morphology also can not completely distinguish between these two types of tumors, arising from the stromal cells of human origin and in real terms compared to the neuron cell cancer is much more common, the neuron will have a tumor, including plastic Stromal tumors, collectively known as glioma.
The classification of glioma many workers are often used in clinical classification is relatively simple classification Kernohan. Various types of gliomas, astrocytoma to the most, followed by glioblastoma, followed by medulloblastoma, ependymoma, a small branch glioma, the pineal gland tumor, mixed plastic Stromal tumor, choroid plexus papilloma, unclassified neurons and glioma tumors. Various types of glioma a good site, such as astrocytoma was particularly prevalent in the adult brain hemisphere, with multiple children in the cerebellum; glioblastoma almost all happened in the hemisphere; medulloblastoma occurred in the vermis; Ependymoma found in Section 4 ventricle; few sticks of human brain in most cases took place in the hemisphere.
Glioma in order to see more men, especially in pleomorphic glioblastoma, medulloblastoma, obviously men than women. Various types of glioblastoma was particularly prevalent in middle-aged, the ependymoma was particularly prevalent in children and young people, medulloblastoma occurred in almost all children. The site of glioma with a certain age, such as the brain astrocytoma and glioblastoma found in adults, human cerebellum (astrocytoma, medulloblastoma, ependymoma) were more common in children .
Most of glioma slow the disease, since symptoms normally last for a few hours to visit a few weeks to months, up to a few years. Malignant with a high degree of posterior fossa tumors and a shorter history than the benign or the tumor is located in quiet area a long history. If the tumor or cyst bleeding, symptoms of a sudden increase or even a similar incidence of cerebrovascular disease process. Glioma clinical symptoms can be divided into two aspects, one intracranial hypertension symptoms such as headache, vomiting, vision loss, double vision, mental symptoms, and so on; another tumor is oppression, invasion, destruction of brain tissue produced by focal Symptoms can be shown to stimulate the early symptoms of epilepsy, such as limitations, for the latter part of the performance of neurological symptoms such as the lack of paralysis.
The diagnosis of glioma, according to their biological characteristics, age, sex, a good site and the clinical course of an analysis in the history of signs and based on the use of electrophysiology, ultrasound, radionuclides, such as radiology and nuclear magnetic resonance examination , Positioning accuracy rate is almost 100%, the rate of correct diagnosis in 90%.
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Glioma clinical
Glioma course of its pathological type and where the parts of different lengths, since the symptoms in general more time to visit a few weeks to several months, up to a few years. The high degree of malignancy and posterior fossa tumor more than a shorter history than the benign tumor located in the so-called quiet zone or the tumor longer history and more. If bleeding cyst or tumor formation, the symptoms can speed up the development process, and some can even be similar to the development of cerebrovascular disease.
The main symptoms are two-fold. First, the increased intracranial pressure and other symptoms such as headache, vomiting, vision loss, double vision, seizures and mental symptoms, and so on. The other is a brain tumor by oppression, invasion, destruction arising from the local symptoms caused by neurological deficits.
Most of headache due to intracranial hypertension caused by tumor growth gradually increased intracranial pressure, oppression, involved in pain-sensitive structures, such as intracranial blood vessels, subdural and some of the cranial nerves and have a headache. Tiaotong for the most part, pain, in many parts of the amount of temporal or occipital, in the light side of the hemisphere of the brain tumors, headaches may be at the side of the main headache for the beginning of intermittent, occurred in the early morning, with the tumor development , Headache gradually increase the duration of the extension.
Department of vomiting and vomiting due to the medulla, or central vagus nerve stimulation caused by, can no nausea, and injection is. Children in craniosynostosis due to the headache does not Separation significant, and as a result of posterior fossa tumors often, it is more prominent vomiting.
Intracranial hypertension may have optic nerve head edema and secondary optic nerve atrophy caused by long, the decline in visual acuity. Optic nerve tumor suppression who have primary optic atrophy, also addressed to the decline in visual acuity. Outreach vulnerable neurons involved in extrusion, often caused by paralysis, diplopia have.