Recently, a 51-year-old male patient was seen in the neurosurgery department of the District Hospital of Traditional Chinese Medicine. It is understood that the patient often felt weakness in both lower limbs in the past month, accompanied by numbness in the lower half of the body, and although he could walk normally, he often felt weak and had to drag his legs to walk. Before hospitalization, he had tried conservative treatments such as medication and physical therapy, but the results were not obvious. After being admitted to the district hospital, Dr. Peng Zhiqiang, the chief neurosurgeon, gave the patient an MR examination and found that there was a cyst in the spinal cord from chest 9 to chest 10. With the close cooperation of the operating room and anesthesia department, Dr. Peng successfully completed a case of spinal cord cyst excision by using micro-neurosurgery techniques and intraoperative ultrasound. Intraoperative ultrasound accurately locates the cyst. In addition to the micro-neurosurgery technique, this patient is also the first patient in the neurosurgery department of the district hospital to use the intraoperative ultrasound technique. It is understood that intraoperative ultrasound is still a relatively new technology at present. It is the first time that it is used in neurosurgery in Panyu, but Director Peng believes that intraoperative B-ultrasound technology has quite obvious advantages in surgery. In this case, the doctor used a small ultrasound probe about 2cm long and 6mm wide to accurately locate the cyst, after which the cyst was removed under the microscope for the patient. Dr. Peng said that the removal of the cyst does not mean that the surgery is complete, but to ensure that the cyst has been removed and to avoid residue, they will use the ultrasound probe again to check. This way, they can ensure the thoroughness of the surgery and avoid re-operation. The patient recovered well after the surgery. Director Peng said that the cyst in the spinal cord was a benign lesion that would not recur after removal. If the patient did not undergo resection after the discovery of the cyst, the patient’s previous symptoms would have gotten worse and worse if it continued to develop. Because of the prolonged compression of the cyst, it may lead to irreversible damage to the nervous system. Like the patient in the case, if the surgery was performed early, the patient could have recovered completely after the surgery. It is understood that the patient’s body recovered quite well after the surgery and now walks without any problem, and the previous symptoms of weakness and numbness in both lower limbs have disappeared. Director Peng said, after the surgery, the patient is mainly using some antibiotic drugs and nerve nutrition drugs, and appropriate supplementation of some vitamins, about three weeks, the patient will be able to resume normal life, will not affect the patient’s work and life. The patient had seen a doctor before and thought it was a lumbar disc herniation, but did not think it was an intraspinal cyst. Because intra-spinal cysts are the same as lumbar disc herniation, patients will have symptoms such as back pain and numbness. However, although the symptoms of lumbar disc herniation and spinal cord cyst are somewhat similar, there are still obvious differences, that is, lumbar disc herniation shows mainly the pain of nerve roots, there will be back pain or sciatica, the patient may have pain from the buttocks to the root of the thighs; but if it is an intra-spinal cord tumor, in addition to similar symptoms, there will be paraplegia, sensory impairment However, if it is an intra-spinal cord tumor, in addition to similar symptoms, paraplegia and sensory impairment may occur.