Fig. 3From: Endoscopic treatment of lumbar ligamentum flavum cyst by interlaminar approach: a minimally invasive and effective alternative to open surgerya, b MRI,3Â days after operation, showed that the mass in the L4/5 spinal canal was completely removed, and edema signals were seen in the operation area. c Postoperative pathological examination showed fibrous tissue hyperplasia with vitreous degeneration and local mucus degenerationBack to article page