Fig. 2From: Dura sac compression due to spinal epidural gas pseudocyst after lumbar decompression surgery: a case reportPostoperative lateral X-ray of lumbar spine after surgery revealed a black shadow in the upper surgical region (a). The patient had no comfort and no intervention was taken. 10 days later, she began to have dysfunction of excretion. CT and MRI (b and c) revealed a collection of epidural gas pseudocyst, compressing the spinal cordBack to article page