What is Brain Cancer?

微信截图_20180803074609Tumors growing in the brain are known as brain tumors, including primary brain tumors arising from brain parenchyma and secondary brain tumors that are transferred from other parts of the body to the brain. Primary brain tumors are benign and malignant according to their biological characteristics. Benign brain tumors grow slowly, the capsule is intact, and they I do not infiltrate the surrounding tissues and differentiate well. Malignant brain tumors grow faster, have no capsule, and have no obvious boundaries. They are invasive and poorly differentiated. Whether benign or malignant, can squeeze and pass the normal brain tissue, resulting in elevated intracranial pressure, threatening human life.

In recent years, intracranial tumor incidence is rising, according to statistics, intracranial tumors accounted for about 5% of all tumors, accounting for 70% of childhood cancer and other malignant tumors, there will be 20–30% to intracranial, due to the expansion of invasive growth, according to a certain once in intracranial space, regardless of its nature is benign or malignant that will enable increased intracranial pressure, pressure of brain tissue, cause central nervous system damage, endangering the lives of patients.

Intracranial tumors can occur at any age and are most common at the age of 20-50. There were many tumors in the posterior fossa and midline of children, mainly medulloblastoma, craniopharyngioma and ependymoma. Adults with cerebral glioma is the most common, such as astrocytoma, glioblastoma, ependymoma, meningioma, followed by pituitary adenoma and craniopharyngioma, neurofibroma, cavernous hemangioma and cholesteatoma. The incidence of primary intracranial tumors was not significantly different between males and females

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