What causes sacral cysts?

The vast majority of sacral cysts are congenital, and the specific ** is still unclear. The vast majority of sacral cysts are found during MRI of the lumbar spine for other lumbar disorders, or after examination of the sacral duct cyst itself to compress the surrounding nerves. For sacral duct cysts that do not have obvious symptoms, the vast majority do not require any treatment, and regular observation is sufficient.

If the sacral duct cyst compresses the nerve roots around the sacral duct and causes associated neurological symptoms, most surgical excision of the sacral duct cyst is recommended to relieve the associated neurological symptoms. Sacral duct cysts in the lumbar spine are mainly due to intrasacral infection, that is, bacteria invade and grow in the sacral duct, and later are controlled and encapsulated by normal tissues, which will form cystic tumors in the sacral ducts. However, this cystic lump often compresses the lower nerves in the sacral canal, causing radiating pain in the buttocks and legs, and is accompanied by a significant swelling sensation in the lower back.

Therefore, after the occurrence of lumbosacral duct cyst, there will be significant lower back pain, which may radiate to the patient's buttocks and legs, and it is best to directly perform surgical removal.

Epidural meningeal cysts containing spinal nerve root fibers, also known as Tarlov perineurial cysts or spinal nerve root diverticulum (Naborsii), are ,-- cysts formed by abnormal dilation of the distal end of the spinal nerve root sleeve.

It is located at the level of S2-3 spinal ganglia or its distal end and is more common in adults.

Epidural meningeal cysts (Nabors type IB) that do not contain spinal nerve root fibers are arachnoid herniations due to congenital dural diverticulum or congenital dural defects, usually at the sacral S1-3 level, and are common in adults.

There were no significant differences between men and women.

Depending on whether the overall structure of the cyst contains nerves, it can be divided into simple type and radiculotype.

Sacral sac swelling is related to intervertebral disc distending, Yan Wei does not know which is the main reason, you can do diagnostic intervention first**, can't**, will**generally 3-12 months**, a few will be short-term**, and the vast majority will not be aggravated.

Wu Chungen, Shanghai Sixth People's Hospital.

There are certain risks associated with surgery, but the risks of this surgery are very small for patients with early sacral duct cysts, and there is generally no paralysis or cauda equina nerve damage after surgery. However, some patients are not as fortunate as the early stage patients, and the cysts of the sacral duct already contain nerve root fibers, that is, spinal nerve roots, also known as cauda equina nerves, and the symptoms of patients at this level will be more complex and severe, and the symptoms are usually more stubborn.

Patients with this more complex sacral duct cyst are usually more likely to be paralyzed or incomplete after surgery, and if it does not go well, then subsequent manifestations of cauda equina syndrome will follow. Unless intraoperative neuroelectrophysiological monitoring is used, patients with complex sacral duct cysts are less likely to be paralyzed after surgery.

The more difficult ones are some patients with complex and stubborn conditions, these patients may need repeated cyst surgery**, or they need to do it a second, third or more time if they are not thorough enough at one time, and under such complex conditions, the possibility of cauda equina nerve damage after surgery will be great and unavoidable. Only a small number of patients may be able to remain normal after multiple surgeries, but this is rare. Therefore, this is why patients who have undergone multiple surgeries are often more likely to cause cauda equina syndrome manifestations such as bilateral lower limb weakness, abnormal sensory perception, and urinary and urinary dysfunction after surgery.

The surgical risk of sacral duct cyst is relatively large, because this kind of place involves nerves, and the cyst may form ** if it remains, so the risk is still relatively large. First of all, the most common is the cyst**, which is generally related to the treatment method and surgical technique of the cyst, and in some cases, a part of the cyst wall remains or the treatment is not in place, which may cause the later stage**.

The second is that surgery will inevitably cause the corresponding infection, if it is only a hidden infection, there are no obvious clinical symptoms, it can be basically ignored. However, in some cases, it may also cause obvious infection, causing the overall intracranial infection of the patient to cause more severe symptoms.

In addition, because the nerves are involved in the surgical process, once the nerves are necrotic, they cannot be regenerated, and if there is a slight carelessness during the operation, the nerves may be damaged, resulting in more serious symptoms in the later stage.

Therefore, the risk of sacral duct cyst surgery is relatively large, and it is necessary to prepare accordingly before surgery**.