What is a spider cyst in the brain? What are the symptoms of arachnoid cyst and are they serious?

Don't worry too much about pulling!There's a lot of cerebrospinal fluid in it.

Analysis: Suggestions:

Arachnoid cysts are divided into two categories: congenital and secondary. The former is the result of extensive arachnoid adhesion caused by trauma and inflammation. Congenital arachnoid cysts are pocket-like structures formed by cerebrospinal fluid surrounding the arachnoid membrane.

Does not communicate with the subarachnoid space. Secondary cases cause arachnoid adhesions to form cysts in the subarachnoid space, containing cerebrospinal fluid. It is more common in the small cranial fovea, and is also seen in the greater occipital cistern, 4-fold peri-cerebral cisterna and suprasellar cistern.

Clinical manifestations] The clinical presentation is similar to that of intracranial mass lesions. Some patients may have paresis or seizures. There may also be localized symptoms such as proptosis and disproportionate head.

Imaging findings] were cerebrospinal fluid density areas with clear and smooth external borders, and the CT value was 0 20 hu, and there was no enhancement manifestation. Cysts near the lateral fissure and cranial vault are characterized by a straight line on the inner edge, which can be square. Often causes resorption and distention of adjacent skull bones.

A cisternal cisterna arachnoid cyst can displace the four ventricles anteriorly, with enlargement of the ventricles above the lesion. [Differential diagnosis] Arachnoid cysts located in the posterior fovea should be distinguished from epidermoid cysts and angioreticular cell tumors. Not all intracranial arachnoid cysts require surgery, and surgery is not necessary if there are no symptoms, and surgery can be left without surgery for patients without increased intracranial pressure and local neurological deficits, and only follow-up observation is performed.

At present, the more uniform surgical indications are: 1) Regular examination reveals progressive enlargement of the cyst, combined with hydrocephalus or intracranial hypertension caused by subdural hematoma. 2) The cyst compresses the brain tissue, producing signs of intracranial hypertension or neurological localization.

3) There are intolerable symptoms, conservative ** is ineffective. 4) Cysts induce epilepsy. 6.

What are the follow-up observations? Surgical options include direct surgery, with the former being craniotomy or endoscopic surgery to remove the cyst wall or communicate the cyst with the subarachnoid space and ventricles; The latter uses a shunt device to drain the capsule fluid into the abdominal cavity. Theoretically, cyst wall resection is the most ideal surgical method (microsurgery to remove all cysts), but due to the deep location and tight adhesion of the cyst wall to the normal nerve structure, it is rare to completely resect the cyst wall, and cysts often appear due to less resection of the tumor cyst wall**.

Therefore, recently, our department has adopted endoscopic surgery, under the condition of minimally invasive surgery, the cyst cavity and the subarachnoid cavity are opened, and a part of the cyst capsule is removed at the same time, which effectively reduces the cyst rate. The advantages of shunt surgery are simple technique, few complications and low mortality, and the reduction of cyst volume is gradual, while the disadvantage is that there are complications such as infection and mechanical shunts, and the clinical symptoms can be relieved.

What does a arachnoid cyst look like on MRI? Radiologist explains.

1. Hello! Please upload an MR video.

2. The child has convulsions, whether he has done electroencephalogram examination, and whether he has found epileptic waves.

3. The first grade of arachnoid cyst mainly depends on the size and location of the cyst, whether it compresses brain tissue, and whether it induces seizures. 4. For arachnoid cysts that are asymptomatic or do not compress the brain tissue, surgery can be done, but regular follow-up observation should be carried out, and the size of the head MR cyst should be regularly rechecked for progress.

5. There are two surgical methods for arachnoid cysts with surgical indications: cyst peritoneal shunt and craniotomy for cystectomy.

Severe headache, sudden blurred vision, severe vomiting coma.

I went through all the information and the main symptoms were headaches, vision loss, seizures, etc. Hope it helps!

Don't listen to them, Mu has symptoms, nothing at all.

What does a arachnoid cyst look like on MRI? Radiologist explains.

Suggestion: Hello! The brain is characteristic, that is, because the skull fixes the cranial cavity to its volume, so as long as there are various things or changes in the skull, brain compression will be formed, but compression does not necessarily need to **, the key is to see whether there is a corresponding dysfunction of the compression part.

Your MRI has described a change in compression, but this compression is the basis for determining the cystic mass.

From the site of its occurrence, it is at the lowest part of the temporal pole, that is, in the middle cranial fossa, where there is no important cranial nerve passage and important nerve innervation area. Therefore, it does not cause significant symptoms and is not necessary. At the same time, it is also said that arachnoid cysts are mostly congenital and are benign lesions, so they grow slowly or even do not grow, and this situation does not need to be **.

Surgery should only be considered if the growth is enlarged and the corresponding symptoms are caused. The cause of the headache needs to be judged whether it is caused by the cyst, if only the right side of the headache (generally in the upper right ear area), it is considered to be caused by the local compression of this cyst, if it is not the headache in this area, there may be other causes of the headache, which needs to be based on the child's detailed medical history and symptoms, the occurrence and changes of the headache, the accurate headache location and area, judge the condition, and decide whether to use the problem.

Intracranial arachnoid cysts are often found incidentally, such as CT examination after head trauma, and intracranial arachnoid cysts are accidentally found. The most common sites are lateral fissures, occipital cisterns, suprasellar cisterns, and longitudinal fissures. Most arachnoid cysts do not cause symptoms but reduce the compensatory potential for increased intracranial pressure.

Once an intracranial hematoma or tumor develops, intracranial pressure rises sharply and the condition worsens in a short period of time. A small number of arachnoid cysts, such as suprasaddle arachnoid cysts, can lead to growth retardation, mental retardation, and hydrocephalus in children.

Outpatient clinics often encounter patients with suprasellar arachnoid cysts diagnosed with hydrocephalus.

Ventricular-peritoneal shunt has been performed, and the cyst continues to grow after surgery, and the disease progresses rapidly.

Small arachnoid cysts can be reviewed regularly and do not require surgery**, but they should be reviewed regularly to see if the cyst is changing. If the cyst is large or compressive, or if it interferes with development, surgery should be considered.

For intracranial arachnoid cysts, craniotomy was the first to be used.

The cyst wall is removed, the operation is traumatic, and most patients develop cysts after surgery**.

Subsequent cyst-peritoneal shunts should be used for endoscopic surgery for intracranial arachnoid cysts**.

The right frontotemporal arachnoid cyst, the right temporal lobe dysplasia, is congenital, and the right ventricle is slightly compressed. It can be checked regularly, and if the mental development is slow and the pressure on the ventricles is aggravated, it is necessary to judge the cleft surgery** Dig reputation: ventriculoscopic arachnoid cyst dissection, and shunt surgery can also be performed.

Kuang Weiping, the Second People's Hospital of Hunan Province.