Causes of Glioma

Written by Chen Yu Fei
Neurosurgery
Updated on September 18, 2024
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Currently, there is no consensus on the specific causes of brain gliomas. Most scholars believe they result from a combination of congenital genetic factors and acquired factors.

In the case of congenital factors, by tracing the medical history of patients with gliomas, it can be found that there is a tendency for a higher concentration of glioma cases among family members.

Acquired factors are mostly seen in severe cranial trauma, extensive gliocyte proliferation, or due to unhealthy lifestyle habits, exposure to carcinogenic chemicals, or long-term damage from highly polluted radiation, which may easily trigger the development of gliomas.

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Written by Chen Yu Fei
Neurosurgery
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Is glioma malignant?

Glioblastoma is a type of malignant tumor, which generally grows at a fast pace. In the early stages of the disease, the glioma often adheres to the surrounding tissues, posing significant challenges for future complete surgical removal. At the same time, extensive cerebral edema occurs around the glioma. If prolonged, this can lead to a serious increase in intracranial pressure, manifesting as repeated headaches, dizziness, nausea, and vomiting in the patient. Over time, this condition may also lead to optic nerve atrophy, resulting in decreased vision and visual field defects. Diagnosis generally benefits from cranial CT or MRI scans, but definitive diagnosis still requires surgical removal of the tumor. A small amount of tumor tissue is typically retained for pathological biopsy.

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Written by Chen Yu Fei
Neurosurgery
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Principles of Treatment for Glioma

For patients with glioma, the primary treatment method is still to surgically remove the tumor, followed by postoperative radiotherapy, chemotherapy, and other related treatments. The main treatment principle is to detect, diagnose, and treat early. During surgery, the tumor should be removed as completely as possible, and it is advisable to receive postoperative radiotherapy and chemotherapy early to effectively consolidate the surgical treatment effects. This helps to kill tumor cells to the greatest extent, slow down the probability and timing of tumor recurrence, and extend the patient's lifespan as much as possible. Therefore, for patients with glioma, it is recommended to choose to seek surgical treatment at well-known, top-tier hospitals locally.

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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.

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Written by Gao Yi Shen
Neurosurgery
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Can gliomas be inherited?

Gliomas have a certain hereditary proportion, but this is not an absolute concept. In clinical practice, there is no clear explanation for the pathogenic factors of gliomas, and theories are generally speculative. For instance, one factor is genetic nature, and there is also some familial clustering which supports the idea of a genetic predisposition. However, it is usually easier to identify purely genetic diseases, but gliomas often involve the inheritance of multiple genes, making it difficult to pinpoint the fundamental factors directly. Additionally, other factors include exposure to radiation and engaging in harmful work, such as producing methanol or solvents, etc. These can also cause genetic mutations leading to gliomas, so the issue is not necessarily solely genetic.

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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.