Interventional treatment of symptomatic sacral canal cyst: recent progress in research

Sacral canal cysts are benign cystic lesions in the sacral canal. Its clinical manifestations are similar to those of lumbar disc herniation, space-occupying lesions in spinal canal,spinal canal stenosis, etc. MRI is the gold standard for the diagnosis of sacral canal cysts. The key to its treatment is to reduce the sac pressure and to obstruct the communication orifice. At present, although there are controversies over the optimal treatment methods for symptomatic sacral canal cysts, interventional therapy has been more and more extensively employed as it has some advantages such as low risk, low medical cost, less complications, repeatable use, etc. This paper aims to make a comprehensive summary about the interventional therapies for symptomatic sacral canal cysts. (authors)