The fourth ventricle tumor Diagnosis

The fourth ventricle tumor is diagnosed by some tests as follow:

1. EEG. EEG abnormalities were universal, both hemispheres appear synchronous paroxysmal slow wave, diffuse δ, θ-wave and for the occipital. It was accompanied by intracranial hypertension statistics optic disc edema, and 28% of patients have abnormal EEG.

2. Cerebral angiography. Cerebrospinal fluid circulation as a result of disruption resulting from hydrocephalus, ventricular expansion was consistency. Carotid angiography showed hydrocephalus when the signs show that the anterior cerebral artery shift outward shift sylvian artery; lateral corpus, as can be seen on peripheral arterial straight shift change and the disappearance of the knee, the Department of sylvian artery carrying Move high. As a result of the fourth ventricle tumor recurring hernia foramen magnum, vertebral artery shows a small posterior inferior cerebellar displacement magnum could be moved to the bottom of hole or.

3. Intraventricular angiography. Ventricular angiography on diagnosis of fourth ventricle tumors have a very important value. Ventricle due to obstruction of cerebrospinal fluid circulation and the expansion of ventricle angiography showed that consistency was the expansion of the fourth ventricle visible tumor nodules or massive impact. Tumor invasion and cerebellomedullary cistern or to the spinal growth, the contrast displayed in the cerebellar medulla oblongata irregular-shaped pools are affected in tumor tissue.

4. Skull X-ray film. X-ray skull showed intracranial hypertension, showed an increase in brain trace back pressure, after the clinoid process and the saddle to absorb or destroy the context of quality.

5. Other. Isotope scanning of the fourth ventricle tumors helpful. Brain CT examination shows the fourth ventricle tumor shadow.