What are the signals of glioma onset?

Now, with the changes in people's living structure, the incidence of brain tumors is gradually increasing. Many people suffer from brain tumors without knowing the reason. Among them, glioma is more common. However, we often don't find it until symptoms appear. So, what are the signals of glioma onset?

90% of glioma cases have symptoms of increased intracranial pressure, with the main clinical manifestations being headache, nausea, vomiting, and visual impairment. Other symptoms may include epilepsy, vertigo, abducens nerve paralysis, and behavioral and personality changes. The progression of symptoms is related to the location of the tumor, the degree of malignancy, the growth rate, and the age of the patient.

1. Headache: In the early stage, it is often intermittent, throbbing dull pain or distending pain. Later, as the tumor grows, the headache intensifies and lasts longer, and can become continuous. The headache can be localized or general, often occurring in the early morning or on an empty stomach after getting up, and gradually relieved during the day. In severe cases, it may be accompanied by nausea and vomiting, and the headache can be relieved after vomiting.

2. Vomiting is also often the first symptom of glioma, which often occurs in the early morning on an empty stomach. There may or may not be nausea before vomiting, and it is often accompanied by severe headache and dizziness. Sometimes it is jet-like, mostly caused by increased intracranial pressure stimulating the vomiting center. Children with posterior fossa tumors will have vomiting early and frequently, which is often the only early symptom and is easily misdiagnosed as a gastrointestinal disease.

3. Papilledema is an important objective sign of increased intracranial pressure. Supratentorial tumors are generally heavier on the tumor side, while infratentorial tumors are roughly connected on both sides. Tumors at the base of the frontal lobe directly compress the ipsilateral optic nerve, causing primary atrophy. Countermeasures Papilledema caused by increased intracranial pressure Papilledema may not affect vision for a long time. As papilledema worsens, the physiological blind spot expands, the visual field shrinks concentrically, and the optic disc atrophies secondary to it. Once paroxysmal amaurosis occurs, vision will decline rapidly. Be alert to the risk of blindness and deal with it early.

4. Epileptic seizures are mostly caused by direct stimulation or compression of the tumor, with an incidence of about 30%. Generally, slow-growing low-grade gliomas such as astrocytomas and oligodendrogliomas have epilepsy as the first or main symptom, while fast-growing malignant glioblastomas have a low incidence of epilepsy.

5. Neurological localization symptoms caused by tumor stimulation, compression or destruction of surrounding brain tissue or cranial nerves, such as frontal lobe glioma can cause damage to the motor area, writing and motor language center, etc., parietal lobe glioma can cause cortical sensory disorders, apraxia, alexia and calculation disorders, etc. Temporal lobe glioma can cause tinnitus and auditory hallucinations, sensory or nomenclature aphasia, vertigo, etc.

If the patient finds the disease early and the glioma is less malignant, it can be surgically removed and the patient can survive up to ten years. If it is discovered late and the tumor is more malignant, the survival period may only be one or two years. The possibility of glioma recurring after being cured is very high, and the malignancy gradually increases with the number of recurrences. If the glioma grows in some special parts, such as the brain stem, it is difficult to cure.