As an important organ of human body, the importance of brain is self-evident, but brain tumor as a relatively rare type of tumor, most people still lack understanding about it. Through the National Tumor Awareness Week, many hospitals and doctors have been carrying out tumor prevention and treatment publicity work. However, as the general public, what they are most concerned about is whether brain tumor can be detected at an early stage if there is someone around them who may have brain tumor, after the publicity of the Tumor Prevention and Treatment Week. High risk factors and high risk groups of brain tumor From external causes, the one that is more certain is radiation. Radiation exposure to the brain is related to many kinds of brain tumors, such as glioma, meningioma, etc. Many of the hazards of radiation are manifested only after a period of time. The high-risk groups are mainly families with hereditary tumor syndromes, such as neurofibromatosis type 1, Li-Fraumeni syndrome, Lynch syndrome, etc. These families have germline mutations in their genes, so the family members are prone to brain tumors, and generally there are many family members who develop the disease at a relatively young age. However, brain tumors caused by such familial tumor syndromes are relatively rare, and most of them are disseminated cases. Early symptoms of brain tumors There are many different types of brain tumors and their symptoms vary. However, in general, the early symptoms of brain tumor can be divided into several common aspects such as neurological impairment, focal brain symptoms, headache and epilepsy. There are twelve pairs of brain nerves in the brain, after being compressed by brain tumor, symptoms such as smell, vision, eye movement, facial sensation and movement, hearing and voice change will appear; functional areas of brain such as motor and language will be affected by tumor and symptoms such as weakness of hands and feet, numbness and language impairment will appear; epilepsy and headache are also common symptoms of brain tumor; if brain tumor is located in relatively non-functional areas without compressing the above structures, early symptoms may If the brain tumor is located in relatively non-functional area without pressing the above structures, only dizziness, memory, personality and other slight changes of mental status may occur in the early stage. However, these symptoms of brain tumor are not unique to brain tumor, which means other brain lesions may also show these symptoms, but these symptoms can indicate brain lesions and help to detect brain tumor in early stage. Objective examinations for brain tumor detection are mainly imaging examinations, including MRI, CT, or PETCT, PETMRI of brain. However, from the radiological point of view, MRI is safer and general brain tumors can be detected by MRI. Of course, CT, PETCT, PETMRI, etc. have their own advantages and sometimes need to be combined to help more accurate diagnosis. Of course, the final diagnosis of brain tumor depends on pathological diagnosis, which can be done by obtaining tumor tissue through surgery. The symptoms of brain tumor are complex and early detection is not easy. If you suspect that you have brain tumor related symptoms, you should consult a professional neuro-oncology surgeon.