患者女，５４岁。自觉腰痛，向双下肢放射伴麻胀感４年余，以左下肢为重，活动或咳嗽时加剧。体检：右骶髂部有压痛与叩击痛，神经系统检查无异常。椎管造影：终池右下方相当于Ｓ２～３水平有与终池同时显影的卵圆形病变，大小为１．８ｃｍ×２．２．ｃｍ×４．５ｃｍ。Ｃ... Female patient, 54 years old. She felt low back pain and had a feeling of numbness in both lower extremities for more than four years. He was more serious about the left lower extremity and worsened during activities or coughing. Physical examination: There was tenderness and percussion pain in the right ankle, and there was no abnormality in the neurological examination. Spinal angiography: the right bottom of the terminal pool is equivalent to the S2 ~ 3 level with the end of the pool at the same time developing ovoid lesions, the size of 1.8cm × 2.2. Cm×4.5cm. C...