most common type of brain tumors are gliomas person, which are formed from the glial cells responsible for the work of nerve cells.Gliomas represent a number of different of both benign and malignant neoplasms.Among them, for example, ependymoma, glioblastmy multiforme, astrocytoma, oligodendroglioma, etc.These tumors can be localized in the brain and spinal cord.
In medicine at grade gliomas can be subdivided into 4 classes, the first class assigned to the most benign tumors, and the fourth - the most malignant.
It should be noted that malignant glioma is difficult to treat and aggressive behavior are different, with most of them about 60% are produced in the tissues of the brain, destroying them due to the increased production of neurotransmitter glutamate.With this amount of glutamate toxicity in patients seizures occur frequently, and also depending on the location of the malignant neoplasm may show characteristic symptoms such as nausea, vomiting, high blood pressure, memory loss and headaches.
When neuroepithelial tumors, survival is very low, as a rule, they die in the first year after the onset of illness.
focal symptoms of brain glioma
focal symptoms of brain glioma is directly dependent on the location of tumors and are the result of a variety of disorders of the endocrine system, nerve compression or local tissue destruction.
When the tumor in the parietal lobe of patients having partial or touch or seizures, observed some violations of sensory functions.Patients may not be aware that they have the disorders caused by the disease, while they have often noted a symptom of stunning.In the case of the tumor in the dominant hemisphere of patients it is often violated and there Finger agnosia and agraphia.
Interestingly, the tumors localized in the temporal lobe, may be asymptomatic and did, however, appearances are characteristic of their seizures.
When the location of the tumor in the temporal lobe as having psychomotor seizures or seizures, as well as visual hallucinations.As if struck by a dominant temporal region there anomie and aphasia.
Epileptic seizures are accompanied by visual aura expressed as flashes of light may indicate the location of the tumor in the occipital lobe, which also leads to hemianopsia and causes visual field defects.
By contralateral hemiparesis lead subcortical tumors, which are often accompanied by loss of sensation of the skin, dystonia, athetosis, and as precocious puberty.
When tumor invasion herniation syndromes can arise in which the brain tissue are pushed through the holes in the skull of the patient.
coma may occur, for example, when a central herniation, causing bilateral paralysis, respiratory rhythm disturbance and fixation of the pupils.In the case of temporal lobe herniation occurs paralysis of external eye muscles on the one hand, and can also stop blood circulation and breathing.
With a fairly long-term increased intracranial pressure as marked false focal symptoms, including hemiplegia from tumors, various fields of vision disorders and paralysis of the rectus eye.
symptoms of cerebral glioma brain
rise to brain symptoms causes increased intracranial pressure caused by the growth of glioma or brain, or a swelling, or due to compression of the venous sinuses, or violations of absorption of CSF.
most characteristic cerebral symptoms are vomiting, headache and changes in the patient's psyche.Slightly less can be observed stagnation of the optic nerve, and the absence of symptoms does not necessarily mean the absence of tumor.
In some cases, sick children as a result of increased intracranial pressure may increase the size of the head.With the development of end-stage patients having symptoms such as changes in heart rate, body temperature and respiratory rate.
When the tumor in the cerebral hemispheres may experience seizures while their appearance may occur long before other symptoms.
It is said that a quarter of patients the first symptoms of cerebral gliomas are mental disorders such as changes in behavior, psychotic episodes, stupor, lethargy state, intelligence disorders and sleepiness.
Symptoms of gliomas of the frontal lobe of the brain
most common tumors of the frontal lobe are gliomas and meningiomas, which had a devastating effect on konveksistalnuyu surface.The characteristic symptoms in this case are such phenomena as changes in mentality, hemiplegia, seizures as a generalized and focal.It can also occur in the case of aphasia tumor in the dominant hemisphere of the brain.In the case of lesions of the medial surface of the symptoms of urinary frequency and urgency, and at the base of the frontal lobe lesion occurs ipsilateral anosmia.
With the defeat of both frontal lobes experience various mental disorders and developing ataxic gait.Patients may show a variety of dysfunction.
Symptoms of glioma brain stem
most frequent tumor of the brain stem is an astrocytoma.Its development is the destruction of the skull and nerve nuclei leads to symptoms such as horizontal gaze palsy, increased intracranial pressure, which, I must say, there is already at a fairly late stage of the disease.In addition, with the defeat of the motor and sensory pathways occur hemianesthesia and hemiplegia.