Intradural lipoma is a relatively rare congenital tumor, often combined with other congenital anomalies such as crural cleft, low crural medulla and crural bulge, etc. It can be located inside or outside of the hard crural membrane or intramedullary, and can occur in any segment of the crural medulla. It is most common in the cervical segment and cervicothoracic and lumbosacral segments. I. What are the possible symptoms of intravertebral lipoma? Intravertebral lipoma develops slowly, and since the tumor is mostly located in the dorsal side of the crural medulla, the first symptom is often numbness of limbs and ataxia. With the aggravation of symptoms, patients may have symptoms such as frequent urination, urinary incontinence, dry stools, numbness at the root of thighs and so on. Second, what complications may occur in the surgery of intraspinal tumor? 1.Infection. In intravertebral tumor surgery, the chance of postoperative infection is very high, because most of the procedures need to open the dura mater, which can easily lead to the source of infection into the cranium, which is easy to be infected and cause meningitis and other serious complications; 2. Bleeding. In neurosurgery, once bleeding occurs, the consequences will be more serious. In general, crural neurosurgeons usually use bipolar electrocoagulators to stop bleeding, and sometimes the removal of tumors in the lumbar spine area can lead to the outflow of cerebral crural fluid and intracranial hemorrhage due to the reduction of intracranial pressure. Furthermore, in recent years, the development of minimally invasive microsurgical techniques has made it possible to effectively control bleeding during resection of intraspinal tumors; 3. Crestal stability problems. Intravertebral tumor will affect the crural bone, and after a long time the crural bone will have obvious deformity, or lateral curvature or posterior convexity, because it is necessary to consider whether it is necessary to give the patient internal fixation to protect the stability of the crural column at the time of surgery.