The cyst of the brain is, as a rule, a benign pathological formation filled with cerebrospinal fluid (cerebrospinal fluid). Such formations are subdivided depending on their localization. In the case of retrocerebellar arachnoidal cerebrospinal cyst, this refers to the formation, which simultaneously affects the cobwebs, as well as the gray matter, i.e. nerve cells. Also, when classifying an ailment, a more accurate cyst area may be indicated (for example, arachnoid retrocerebellar cyst of posterior cranial fossa, lower, upper cyst).
Formation of this variety cysts precede necrotic phenomena - the death of gray matter. This may be due to infectious and inflammatory diseases of the brain, trauma, circulatory disorders and some other factors. With a small size of education, it can not produce manifestations, and can be detected accidentally during diagnostic tests. In such cases, it is usually recommended to simply monitor the dynamics of cyst development, treatment is not performed. What can be dangerous retrocerebellar arachnoid cyst of the brain, we consider further.
What sizes of retrocerebellar arachnoid cyst are dangerous?
Like other types of cysts of the brain, this variety carries danger when increasing in size, especially rapid. However, there are no general trends regarding the probability of growth of the cysts of the brain and the speed of this process, so it is impossible to foresee the future "behavior" of education. There is also a risk of rupture and suppuration of the cyst.
If there is an expansion of the retrocerebellar arachnoid cyst, this leads to squeezing the adjacent areas of the brain, changing their structure and disrupting functioning. As a result, there are symptoms that significantly affect the life of a person. Possible manifestations may include:
- headache;
- dizziness;
- hearing impairment;
- visual impairment;
- lack of coordination;
- epileptic seizures;
- numbness of limbs ;
- paralysis, etc.
If the size of education is calculated in millimeters, they usually do not carry a threat. But with an increase in the size of the cyst over 1 cm, urgent surgical intervention may be recommended.