Brain tumors can be divided into different types and the incidence of each type may differ.
The most common brain tumors are:
Gliomas: They are tumors arising from glial cells and are the most common of brain tumors. are the most common types. Gliomas are divided into subtypes such as astrocytoma, oligodendroglioma, and so on. Gliomas make up about 30% of all brain tumors. Gliomas are classified as low grade and advanced stage. Advanced stage gliomas are malignant and are called brain cancer.
Meningiomas: They are tumors originating from the meninges. They are usually benign. Meningiomas constitute approximately 30% of brain tumors.
Schwannomas: They are tumors arising from nerve sheath cells (Schwann cells). They are usually benign. They most commonly originate from the auditory nerve (acoustic nerve) and are called acoustic neuromas. Schwannomas constitute approximately 7% of brain tumors. Medulloblastomas are the most common brain tumors in children and adolescents and constitute approximately 10-20% of brain tumors in childhood. Brain metastases constitute 30-40% of tumors in the brain. Metastatic brain tumors are usually the result of the spread of other types of cancer.
In general, when more than one mass with extensive edema is detected in the brain, it is thought to be brain metastasis. The definitive typing of the tumor is only confirmed by studying the tumor material taken by surgery or biopsy. In addition, even if the type of brain tumor is correctly diagnosed with MRI, the degree of malignancy can only be determined after a pathological study. Therefore, in all patients diagnosed with a brain tumor, a pathology sample is definitely studied after surgery, and both the typing of the tumor and the degree of malignancy are determined. Depending on the type and malignancy of Brain Tumors, it is decided whether to continue postoperative radiotherapy and chemotherapy supportive treatments.
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