What are the main diagnostic methods for brain cancer?

What are the main diagnostic methods for brain cancer? I believe many people have this question. In daily life, you should go for regular physical examinations and always pay attention to whether your body has signs of brain cancer. If there are some reactions, you should find out what is causing the discomfort. Let's follow the experts to learn about the diagnostic methods of brain cancer .

1. Fundus examination is one of the diagnostic methods for brain cancer. Observe whether there is optic nerve head edema. Optic nerve head edema is a sign of increased intracranial pressure. It is called the "three symptoms" of increased intracranial pressure together with headache and vomiting. However, it is only seen in one-quarter of patients, so the possibility of brain tumor cannot be simply ruled out by a negative eye examination.

2. X-ray of the skull. It helps to understand whether there is increased intracranial pressure, local destruction or hyperplasia of the skull, whether the sella turcica is enlarged, the displacement of pineal calcification and pathological calcification in the brain tumor, etc. It is helpful for positioning and qualitative diagnosis. However, the positive rate of X-ray is less than one-third, so brain tumors cannot be ruled out due to negative X-ray results.

3. EEG is also a diagnostic method for brain cancer. It is valuable for locating fast-growing brain tumors in the cerebral hemispheres, where the amplitude and frequency of the diseased side can be seen to be reduced, but it is not very helpful for diagnosing brain tumors in the midline, deep in the hemisphere, and under the tentorium. The EEG topography developed after the 1970s can graphically display the location and range of intracranial lesions, and is more sensitive to the diagnosis of brain tumors than conventional EEG. It is mainly manifested as abnormal slow wave power in the tumor area and around the tumor area, and is an effective screening method before CT examination.

4. Brain CT scan: The detection rate of brain tumors can reach more than 90%. It is easy to show the size, shape, number, location, density and nature of the lesions, and the anatomical relationship is clear. It is currently the main diagnostic method for brain cancer.

The above is an introduction to the diagnosis methods of brain cancer. I hope the above content can be helpful to you. If you have any questions about brain cancer, you can contact our online experts and they will give you detailed explanations.

For more information, please visit the brain cancer special topic at http://www..com.cn/zhongliu/na/ or consult an expert for free. The expert will then give a detailed answer based on the patient's specific situation.