parafalx meningioma
Introduction
Introduction to cerebral palsy meningioma Cerebral paraventricular meningioma refers to a type of clinically common meningioma located in the longitudinal division of the brain and connected to the cerebral palsy. Except for the large or plaque-like growth of the tumor, the superior sagittal sinus is rarely involved. In one side of the cerebral hemisphere, sometimes it can develop to both sides. There are also a few tumors that are flat and infiltrating in the cerebral palsy. Cerebral palsy meningioma is more common in women, with an average age of onset of 49.5 years. basic knowledge The proportion of illness: 0.001% Susceptible people: no specific people Mode of infection: non-infectious Complications: Somatosensory disturbance
Cause
Etiology of cerebral palsy meningiomas
Cause (75%):
The cerebral palsy meningioma is predominantly endothelial and fibrous, starting from the cerebral palsy and not in contact with the inner plate of the skull. Therefore, local skull changes do not occur. The tumor can be supplied by the cerebral palpebral artery or by the brain. The arteries supply blood, the anterior part can be from the branch of the ophthalmic artery, the posterior part is from the occipital artery, the middle part of the cerebral artery can be supplied with blood, and there are many dilated veins in the cerebral palsy of the tumor and nearby cerebral palsy.
Prevention
Cerebral paralysis of meningioma
1. Develop good habits, stop smoking and limit alcohol. Smoking, the World Health Organization predicts that if people no longer smoke, after five years, the world's cancer will be reduced by 1/3; secondly, no alcohol. Smoke and alcohol are extremely acidic and acidic substances. People who smoke and drink for a long time can easily lead to acidic body.
2. Don't eat too much salty and spicy food, don't eat food that is overheated, too cold, expired and deteriorated; those who are frail or have certain genetic diseases should eat some anti-cancer foods and high alkali content as appropriate. Alkaline foods maintain a good mental state.
3. Have a good attitude to deal with stress, work and rest, do not fatigue. Visible pressure is an important cause of cancer. Chinese medicine believes that stress leads to excessive physical weakness, which leads to decreased immune function, endocrine disorders, metabolic disorders in the body, leading to the deposition of acidic substances in the body. Stress can also lead to mental stress causing qi stagnation and blood stasis. Invagination and so on.
Complication
Cerebral paralysis meningioma complications Complications somatosensory disturbance
If surgery is performed, the following complications may occur:
1. The opposite limb is paralyzed.
2. Feeling the disorder.
3. Visual field defects, mostly caused by the injury of the occipital artery trunk.
4. Postoperative cerebral edema, caused by damage to the reflux vein.
Avoid excessive traction of the brain tissue during operation, avoid damage to the superior sagittal sinus and central sulcus vein, and avoid damage to the periorbital artery and occipital artery trunk. It is a key factor to reduce postoperative complications. Once complications occur, dehydration and neurotrophic nutrition should be given. Drugs, calcium ion antagonists, vitamins and other medical treatments.
Symptom
Cerebral paralysis of meningioma Symptoms Common symptoms Increased intracranial pressure, urinary tract obstruction, spinal cord lesions
Most of the meningococcal meningioma are buried in the longitudinal division of the cerebral hemisphere, and their position is deep. When the tumor is small, the clinical symptoms are not usually caused, so the tumor tends to grow larger when the disease occurs.
Because the central region of the cortex is involved, the local lesions of the brain are less common than the sagittal sinus meningioma. Once the dyskinesia occurs, it begins with the foot, gradually affects the entire lower limb, and then the upper limb muscle disorder, and finally affects the head and face. If the tumor grows to the sides of the cerebral palsy, the patient may have bilateral limb weakness and dysuria, ie, cerebral palsy or tricuspid, which needs to be differentiated from spinal cord lesions.
Another important clinical symptom of this part of the tumor is seizures, which begin with a congenital seizure of the contralateral limb or face, and gradually form a generalized seizure. In addition, the anterior cerebral palsy can also cause mental symptoms, while the posterior part of the cerebral palsy The incidence of epilepsy is low.
About 2/3 of the patients have increased intracranial pressure at the time of presentation, especially in the posterior 1/3 meningioma of the cerebral palsy. This area of meningioma only causes visual field changes, often causing the patient's attention, the tumor often grows to a huge volume. The party was spotted.
A small number of meningioma of the cerebral palsy can develop bilaterally. In the central region of the cortex, it can cause spasm and urinary dysfunction in both lower extremities. The giant paraventricular meningioma that occurs in the posterior region can compress the bilateral occipital lobes. blindness.
Examine
Examination of meningioma of the cerebral palsy
1. Cerebral angiography: It shows that the morphology and circulation of tumor blood vessels are similar to those of meningiomas in other parts, but the tumor staining does not closely follow the cranial top, and there is a gap between the skull and the skull. The posterior part of the cerebral palsy can make the posterior cerebral artery thicker. And shift to the contralateral side, the cerebral palsy meningioma can also have dual blood supply, the front can come from the branch of the ophthalmic artery, the rear comes from the occipital artery, and the middle part of the meningeal artery can supply blood. At this time, the thickened meningeal artery reaches the parietal bone. The plate is turned down again, showing a sacral or radial direction into the midline cranial cavity, suggesting that the tumor is attached to the cerebral palsy.
2. CT and MRI: unilateral or bilateral spheroidal or flat-shaped masses can be seen next to the iliac crest, the boundary is clear, and the equal-density or slightly high-density lumps are in the flat scan, with punctate or irregular calcification, and the base of the cerebral palsy. Wide, one side of the lateral ventricle can be pressure-shifted or deformed, the tumor is obviously enhanced after injection of contrast agent, when the tumor is larger, the cerebral vein is compressed to hinder the reflux, and edema will appear around the tumor, and the MRI scan can better reflect The degree of tumor boundary and the degree of edema around the brain tissue more accurately reflect the relationship between the tumor and the sagittal sinus and important cerebral cortex structure, which has a certain guiding effect on the choice of surgical approach. The signal on MRI scan and other parts of meningioma the same.
Diagnosis
Diagnosis and differentiation of cerebral palsy meningioma
diagnosis
1. Clinical manifestations.
2. Flat film: There may be bone hyperplasia and increased intracranial pressure.
3. Head CT scan: Sometimes it is not easy to distinguish from the sagittal sinus meningioma. On the side of the cerebral palsy, there is an increased density image on the side of the cerebral palsy. The cerebral edema is low-density band around the cerebral edema.
4. MRI examination: with the characteristics of meningioma, three-dimensional imaging technology makes the anatomical relationship of the tumor more clear.
Diagnosis can generally be made based on clinical manifestations and imaging studies.
Identification
The disease should be differentiated from intracranial hemangiomas, both of which are intracranial mass-cavity diseases, and both CT scans with enhanced enhancement will have strong positive-like changes, so the clinical focus should be on the lack of points. For meningiomas, he is a solid or semi-solid semi-cystic structure. B-ultrasound examination of the skull can be distinguished from the hemangioma of the meninges, which obviously has a flow image of the blood vessels.
