Hi I have had 2 lumbar surgeries this year. 6 weeks apart. The second one was to remove a large SF filled cyst. Was in ICU for 5 days with drain to keep pressure off the places he fixed. About a week after I got out started having a high pitch ringing In my ears and the headache came back. Went back to see my Dr and he said that the ringing in my ears was not a symptom of a leak. And no leak was showing on the MRI. But when he went in to take the cyst out he also found 4-5 small leaks that did not show up on a previous MRI. So what is going on? Thanks for any answers you can help with