What are Multiple perineural cysts?

Answer 1

This is a very rare problem, and involves the sacral nerve sheathes. As the spinal nerves leave the head, they are encased in a 3-layer covering (which is an extension of the covering of the brain). As each nerve exits the spinal cord, it is encased in this covering called a "sheath". Fluid flows inside this "sheath", and helps protect the nerve as well as nourishing it. In the sacrum --the area at the bottom of the spine that is connected to the pelvis (just above the crack in your buttocks)-- the nerves are also encased in a sheath, and in many people these "sheathes" can balloon from being over-filled with spinal fluid. Most of the time this ballooning of the sheath doesn't hurt anything; however, in a very rare patient, these ballooning sheathes can be so numerous & severe, that pressure is placed of adjacent nerves, causing abnormal numbness and even weakness and pain. Because it occurs in the sacrum, and is extemely rare, it is difficult to diagnose (difficult to see within the bone). And because it is extremely difficult to get to, surgery is rarely considered. If you Google "perineural cysts", you'll find a lot of good information...

Answer 2

Perineural cysts appear to be dilated or ballooned areas of the sheaths that cover nerve roots exiting from the sacral area of the spine. The spaces or cysts created by the dilated sheaths are directly connected to the subarachnoid area of the spinal.

Answer 3

A variety of conditions that can increase the flow of cerebrospinal fluid may cause perineural cysts to expand in size, creating symptoms. Such conditions include traumatic injury, shock, or certain forms of exertion (such as heavy lifting).

Answer 4

what is cause of perineural cyst