Late-stage symptoms of glioma

Written by Jiang Fang Shuai
Neurosurgery
Updated on September 02, 2024
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The continuous growth of gliomas or the occurrence of tumor stroke hemorrhages can lead to very high intracranial pressure in patients in the late stages. This results in severe headaches with persistent attacks, accompanied by nausea and vomiting. Projectile vomiting is a typical manifestation of increased intracranial pressure. Patients may experience changes in consciousness, such as drowsiness, stupor, and coma. As the condition progresses to brain herniation, patients can fall into a deep coma, with either bilateral or unilateral pupil dilation and loss of light reflex. Vital signs become unstable, ultimately leading to death due to heart and respiratory arrest caused by the brain herniation.

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Written by Jiang Fang Shuai
Neurosurgery
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How is glioma graded?

According to the characteristics of pathology, gliomas are divided into grades one to four. Grade one is a low-grade malignancy, more benign tumor, accounting for about 5%, with a relatively high probability of successful surgical outcomes. Grade two accounts for about 35%, and after comprehensive treatment including surgery, the survival rate can reach five to ten years, or even longer. Grade three usually develops from grade two, with relatively poor prognosis, and the average survival period is about two years. Grade four, the most malignant glioma, also known as glioblastoma, accounts for about 30%-40%, with an average survival period of less than one year, and very poor outcomes.

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Written by Gao Yi Shen
Neurosurgery
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Glioma Symptoms

The symptoms of glioma are numerous, and it is essential to make judgments based on the situation. The most common clinical manifestations are headaches, dizziness, nausea, and vomiting. These symptoms may persist for a relatively long period and are relatively mild, not immediately noticeable at the time. Additionally, some patients may experience a decline in cognitive function, colloquially described as becoming less intelligent. This is especially common in gliomas of the frontal lobe. If the glioma is located in the occipital lobe, it often causes visual disturbances, such as blurred vision and visual field defects. In cases of temporal lobe gliomas, frequent seizures and impaired limb mobility may occur. For cerebellar gliomas, symptoms can include a decline in cognitive function and ataxia, among others.

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Written by Gao Yi Shen
Neurosurgery
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Is a glioma benign or malignant?

Glioblastoma is the most common form of malignant tumor inside the skull, and the vast majority of glioblastomas are highly malignant. Once changes in this condition are detected, generally, the patient doesn't have much time left. If it is a relatively better glioblastoma, which means it is highly differentiated, the survival time is about 1-2 years. For some poorer glioblastomas, or those with low differentiation, their survival period is often only about six months, and they continuously spread along with nerve fibers to the surrounding areas. They might even metastasize to distant places through cerebrospinal fluid, blood, lymph, and other means. Therefore, even if surgery is used to remove a single lesion, other parts of the body may still demonstrate metastatic lesions. Hence, the treatment approach for this is comprehensive.

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Written by Chen Yu Fei
Neurosurgery
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Glioma Symptoms

For patients with glioma, they often exhibit certain degrees of headache and dizziness, with headaches typically located bilaterally in the frontal or temporal regions. The nature of the pain is relatively sharp, manifesting as intermittent attacks that progressively worsen over time. Long-standing gliomas easily induce a notable increase in intracranial pressure, presenting with severe headaches, nausea, vomiting, and even a decrease in vision or visual field defects. When the glioma is located in the parietal lobe and affects important motor function areas, it can lead to unilateral or bilateral limb weakness, numbness, pain, and possibly even trigger hemiplegia.

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Written by Jiang Fang Shuai
Neurosurgery
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Glioma Causes

Gliomas are common intracranial primary tumors, with astrocytoma being the most prevalent, followed by oligodendroglioma, medulloblastoma, glioblastoma, ependymoma, etc. The causes of gliomas are very complex and are still unclear to this day. The prevailing view is that the development of gliomas results from the combined effects of internal carcinogenic genes and external carcinogenic factors. Changes in carcinogenic genes include gene mutation deletions, proto-oncogene activation, and so on. External factors mainly include radiation from X-rays, smoking, drinking, and some toxic and harmful foods and medications, etc.