The brain is located in a closed box and the parts of the brain are separated from each other by intact membrane structures. When there is cerebral edema, that is, when the brain swells, parts of the brain may herniate. The brain tries to come out of the hole at the bottom of this closed box, that is, a brain stem hernia happens. Or, when a part of the brain swells, it tries to come out from under the thick membranes that limit this part, that is, to herniate, and a midbrain hernia occurs. Neurosurgeons sometimes perform decompression surgery to save the patient’s life when the specific symptoms of a brain hernia occur; that is, they try to remove a part of the skull and make room for the swollen brain.
Cisterna magna is the name of one of the water-filled spaces in our brains. In these intervals, cerebrospinal fluid, that is, CSF, circulates. The term mega cisterna magna is the name given to one of these intervals being wider than normal. After all, this is not a disease or a risky condition. It’s just a personal difference. I mean, it’s a simple difference like my nose is bigger and my brother’s chin is sharper. The fact that such statements are included in the results of the audit is due to the fact that the experts who wrote these reports have to report all the differences they see.
The word arachnoid is also the name of one of the membranes surrounding the brain, and the cerebrospinal fluid, namely CSF, circulates between the fibers of this membrane. When the circulation of this fluid is blocked for any reason, a pooling of the fluid, medically known as a cyst, occurs in that area. As a matter of fact, the most frequently reported condition in brain imaging examinations is these arachnoid cysts. These cysts are not a tumor or a malignant structure. Most of the time it has been there since infancy and will not cause any problems in the future. However, although rarely, they may need to be operated when they grow up, so they are followed up with intermittent examinations. Sometimes, more detailed examinations may be required to distinguish them from certain tumors.
