My Best Friend Just Had An MRI And The Results

My best friend just had an MRI and the results say that she has some mild stenosis, a couple of small bony growth and partial effacement of ventral subarachnoid space. The doctor said that they would discuss what this means at her next appointment a month from now. Because of the extreme symptoms she's been having we were wondering if you might be able to explain what partial effacement of ventral subarachnoid space means so we don't have to wait another month to find out.