How is brain cancer diagnosed

In recent years, brain cancer has become one of the major diseases that endangers society and human health, and it has brought great pain and distress to humans. In order to reduce the incidence of brain cancer, we humans should master the diagnosis methods of brain cancer:

1 Fundus examination

Observe whether there is optic nerve head edema. b. 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. Therefore, the possibility of brain tumor cannot be simply ruled out based on a negative eye examination.

2. Skull X-ray

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, but the positive rate of X-ray films is less than one-third, so brain tumors cannot be ruled out due to negative films.

3. Electroencephalogram

It has positioning value for fast-growing brain tumors in the cerebral hemispheres, and 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. It is more sensitive to the diagnosis of brain tumors than conventional EEG. Its main manifestation is abnormal slow wave power in the tumor area and around the tumor area. It is an effective screening method before CT examination.

4 Brain CT scan

The detection rate of brain tumors can reach over 90%. The size, shape, number, location, density and nature of the lesions can be easily displayed, and the anatomical relationship is clear. It is currently the main diagnostic method for brain tumors.

5 Magnetic resonance imaging (MRI)

It can show most of the intracranial tumors and peritumoral edema, and can accurately show the location, size and shape of the tumor. It is an important additional examination method for CT, especially for tumors of the skull base and brain stem close to the bones, such as benign astrocytoma on the tentorium, which can show autologous abnormalities, making up for the missed diagnosis of CT without abnormal findings.

The above is the diagnosis method of brain cancer. Expert Tip: If you have symptoms of disease, do not delay diagnosis and go to a regular hospital for treatment in time to avoid delaying the disease and causing serious consequences. If you have other questions, please consult our online experts or call for consultation.

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