I had back surgery 8/22 They removed my L5 S1 and performed a laminectomy on my L4 L5. 10 weeks after surgery I was still in pain with pain radiating down my right leg. My Dr ordered an MRI with contrast and diagnosed me with a synovial cyst. I will have my surgery 12/06. What is the rarity of this occurring? Will it occur again? Anything I should know?