骶管囊肿百科名片（Sacral canal cyst）.docVIP

骶管囊肿百科名片（Sacral canal cyst） Sacral canal cyst Sacral canal cyst occurs in sacral canal cystic lesions, the classification and nomenclature of chaos, such as sacral meningeal cyst, TARLOV cyst (nerve root cysts), sacral arachnoid cyst, sacral epidural cyst, sacral synovial cyst. Most scholars believe that it is a congenital dural diverticulum or arachnoid hernia, which is a congenital defect of dura mater. According to whether there is nerve fiber or cell in cyst, sacral cyst can be divided into two types: simple and nerve root. The clinical symptoms were mainly characterized by the compression of the sacral nerve, and the cyst and the dural sac usually had traffic holes. The traffic hole is valve shaped. Summary of sacral cysts. The study of sacral cysts was first seen in TARLOV [1] in 1938. Sacral sacral cysts were first detected in 30 autopsies, and in 1972, Kataoka Ji [2] referred to them as sacral nerve root cysts. The second category is the arachnoid cyst around the bag shaped structure composed of cerebrospinal fluid into the arachnoid bag. Clinically, it is often misdiagnosed as lumbar disc herniation, spinal stenosis or tumor. Because of the development of medical imaging, especially the application of MRI, the diagnosis rate of this disease has been improved obviously. Sacral nerve root cyst clinical incidence of about 1% to 4.6%, the disease often involving 2 ~ 3 sacral nerve or dorsal ganglion, MRI and myelography can identify its location and size, of which 70% were asymptomatic, can occur in patients with low back pain, sciatica or bowel dysfunction and sacrococcygeal perineal numbness discomfort, only 1/5 patients need surgical intervention in 7. The pathogenesis of the 1 sacral nerve root cyst in the pathogenesis of sacral nerve root cysts is inconclusive, TARLOV 1 that related to trauma, he thinks subarachnoid hemorrhage after trauma, red blood cell volume, hinder the epineurium venous return caused by subarachnoid expansion, and gradually formed a c