Did they do a biospy as well? If not, that could be the next step. You should ask your doctor to explain the results to you and ask if a biospy is needed. In my case - I am now 43, was diagnosed last...
I'm afraid I can't help you with interpreting the medical report. But one thing I can suggest is that you ask for an MRI or CT scan as soon as possible, since these scans are more precise. Good luck...